./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:37,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:37,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:37,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:37,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:37,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:37,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:37,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:37,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:37,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:37,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:37,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:37,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:37,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:37,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:37,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:37,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:37,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:37,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:37,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:37,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:37,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:37,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:37,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:37,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:37,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:37,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:37,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:37,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:37,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:37,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:37,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:37,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:37,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:37,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:37,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:37,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:37,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:37,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:37,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:37,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:37,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:35:37,476 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:37,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:37,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:37,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:37,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:37,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:37,478 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:37,478 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:37,478 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:37,478 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:35:37,478 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:37,479 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:37,479 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:35:37,479 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:35:37,479 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:37,479 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:35:37,480 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:35:37,480 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:35:37,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:37,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:37,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:37,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:35:37,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:37,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:35:37,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:35:37,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:37,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:35:37,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:37,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:37,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:37,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:37,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:37,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:35:37,491 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:35:37,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:35:37,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:35:37,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:37,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:37,491 INFO L138 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_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-11-20 23:35:37,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:37,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:37,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:37,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:37,734 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:37,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-20 23:35:37,814 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/data/acf903365/3f3dcde8207f43ac9333af3b5e5a4406/FLAGadb6edb15 [2021-11-20 23:35:38,809 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:38,810 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-20 23:35:38,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/data/acf903365/3f3dcde8207f43ac9333af3b5e5a4406/FLAGadb6edb15 [2021-11-20 23:35:39,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/data/acf903365/3f3dcde8207f43ac9333af3b5e5a4406 [2021-11-20 23:35:39,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:39,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:39,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:39,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:39,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:39,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:39" (1/1) ... [2021-11-20 23:35:39,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e2f016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:39, skipping insertion in model container [2021-11-20 23:35:39,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:39" (1/1) ... [2021-11-20 23:35:39,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:39,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:42,943 WARN L230 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_65185c7e-3b6c-4246-a1ea-c793f713cb79/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-20 23:35:43,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:43,225 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:35:43,729 WARN L230 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_65185c7e-3b6c-4246-a1ea-c793f713cb79/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-20 23:35:43,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:43,931 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:35:43,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43 WrapperNode [2021-11-20 23:35:43,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:43,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:43,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:35:43,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:35:43,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (1/1) ... [2021-11-20 23:35:44,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (1/1) ... [2021-11-20 23:35:44,349 INFO L137 Inliner]: procedures = 445, calls = 3482, calls flagged for inlining = 226, calls inlined = 196, statements flattened = 7782 [2021-11-20 23:35:44,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:44,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:35:44,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:35:44,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:35:44,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (1/1) ... [2021-11-20 23:35:44,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (1/1) ... [2021-11-20 23:35:44,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (1/1) ... [2021-11-20 23:35:44,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (1/1) ... [2021-11-20 23:35:44,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (1/1) ... [2021-11-20 23:35:44,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (1/1) ... [2021-11-20 23:35:44,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (1/1) ... [2021-11-20 23:35:44,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:35:44,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:35:44,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:35:44,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:35:44,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (1/1) ... [2021-11-20 23:35:44,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:44,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:44,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:35:44,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:35:44,894 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-20 23:35:44,895 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-20 23:35:44,895 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-20 23:35:44,895 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-20 23:35:44,895 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-20 23:35:44,895 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-20 23:35:44,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:35:44,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:35:44,896 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-20 23:35:44,896 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_fabric_acl [2021-11-20 23:35:44,897 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_fabric_acl [2021-11-20 23:35:44,897 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:35:44,897 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:35:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_access_ok [2021-11-20 23:35:44,898 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_access_ok [2021-11-20 23:35:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_close_session [2021-11-20 23:35:44,898 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_close_session [2021-11-20 23:35:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-20 23:35:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-20 23:35:44,899 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-20 23:35:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:35:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-20 23:35:44,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-20 23:35:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-20 23:35:44,899 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-20 23:35:44,900 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:35:44,900 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:35:44,900 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-20 23:35:44,900 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-20 23:35:44,900 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-20 23:35:44,900 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-20 23:35:44,900 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tpg [2021-11-20 23:35:44,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tpg [2021-11-20 23:35:44,901 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-20 23:35:44,901 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-20 23:35:44,901 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-20 23:35:44,901 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-20 23:35:44,901 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_open [2021-11-20 23:35:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_open [2021-11-20 23:35:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:35:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-20 23:35:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-20 23:35:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-20 23:35:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-20 23:35:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-11-20 23:35:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-11-20 23:35:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 23:35:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 23:35:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:35:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:35:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:35:44,905 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:35:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-20 23:35:44,906 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-20 23:35:44,906 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-20 23:35:44,906 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 23:35:44,906 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 23:35:44,906 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_complete_cmd [2021-11-20 23:35:44,906 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_complete_cmd [2021-11-20 23:35:44,907 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-20 23:35:44,907 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-20 23:35:44,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-20 23:35:44,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-20 23:35:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-20 23:35:44,908 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-20 23:35:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-20 23:35:44,908 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-20 23:35:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-20 23:35:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-20 23:35:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id [2021-11-20 23:35:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id [2021-11-20 23:35:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-20 23:35:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-20 23:35:44,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:35:44,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:35:44,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:35:44,910 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 23:35:44,911 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-20 23:35:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-20 23:35:44,911 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:35:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:35:44,911 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-20 23:35:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-20 23:35:44,912 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-20 23:35:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-20 23:35:44,912 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-20 23:35:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-20 23:35:44,913 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:35:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:35:44,914 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-20 23:35:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-20 23:35:44,914 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-11-20 23:35:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-11-20 23:35:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-20 23:35:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-20 23:35:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-20 23:35:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-20 23:35:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-20 23:35:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-20 23:35:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-20 23:35:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-20 23:35:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_alloc_fabric_acl [2021-11-20 23:35:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_alloc_fabric_acl [2021-11-20 23:35:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-20 23:35:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-20 23:35:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_ioctl [2021-11-20 23:35:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_ioctl [2021-11-20 23:35:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-20 23:35:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-20 23:35:44,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:35:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:35:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tport [2021-11-20 23:35:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tport [2021-11-20 23:35:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-20 23:35:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-20 23:35:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 23:35:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 23:35:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-20 23:35:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-20 23:35:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:35:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-20 23:35:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-20 23:35:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:35:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-20 23:35:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-20 23:35:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 23:35:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 23:35:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-20 23:35:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-20 23:35:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-20 23:35:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-20 23:35:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-20 23:35:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-20 23:35:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 23:35:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 23:35:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 23:35:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 23:35:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:35:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:35:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-20 23:35:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-20 23:35:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-20 23:35:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-20 23:35:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-20 23:35:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-20 23:35:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-20 23:35:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-20 23:35:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:35:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:35:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:35:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-20 23:35:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-20 23:35:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:35:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-20 23:35:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-20 23:35:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_cmd [2021-11-20 23:35:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_cmd [2021-11-20 23:35:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_set_default_node_attrs [2021-11-20 23:35:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_set_default_node_attrs [2021-11-20 23:35:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nexus [2021-11-20 23:35:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nexus [2021-11-20 23:35:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:35:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-20 23:35:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-20 23:35:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 23:35:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 23:35:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-20 23:35:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-20 23:35:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-20 23:35:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-20 23:35:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 23:35:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 23:35:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_fabric_proto_ident [2021-11-20 23:35:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_fabric_proto_ident [2021-11-20 23:35:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-20 23:35:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-20 23:35:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-11-20 23:35:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-11-20 23:35:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2021-11-20 23:35:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2021-11-20 23:35:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_deregister [2021-11-20 23:35:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_deregister [2021-11-20 23:35:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 23:35:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 23:35:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-20 23:35:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-20 23:35:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_command_size [2021-11-20 23:35:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_command_size [2021-11-20 23:35:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_dump_proto_id [2021-11-20 23:35:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_dump_proto_id [2021-11-20 23:35:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-20 23:35:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-20 23:35:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:35:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:35:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:35:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-20 23:35:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-20 23:35:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_clear_endpoint [2021-11-20 23:35:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_clear_endpoint [2021-11-20 23:35:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-20 23:35:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-20 23:35:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-20 23:35:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-20 23:35:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:35:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:35:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_flush_vq [2021-11-20 23:35:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_flush_vq [2021-11-20 23:35:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-20 23:35:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-20 23:35:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-20 23:35:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-20 23:35:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-20 23:35:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-20 23:35:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure sas_parse_pr_out_transport_id [2021-11-20 23:35:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_parse_pr_out_transport_id [2021-11-20 23:35:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-20 23:35:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-20 23:35:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure utsname [2021-11-20 23:35:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure utsname [2021-11-20 23:35:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-20 23:35:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-20 23:35:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-20 23:35:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-20 23:35:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-20 23:35:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-20 23:35:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-20 23:35:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-20 23:35:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used [2021-11-20 23:35:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used [2021-11-20 23:35:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 23:35:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 23:35:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 23:35:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 23:35:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-20 23:35:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-20 23:35:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nodeacl [2021-11-20 23:35:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nodeacl [2021-11-20 23:35:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-20 23:35:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-20 23:35:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_release [2021-11-20 23:35:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_release [2021-11-20 23:35:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-20 23:35:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-20 23:35:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:35:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id_len [2021-11-20 23:35:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id_len [2021-11-20 23:35:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_port_link [2021-11-20 23:35:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_port_link [2021-11-20 23:35:45,991 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:35:45,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:35:52,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume #t~switch208;#res := ~ret~1; [2021-11-20 23:35:52,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !#t~switch208;#t~switch208 := #t~switch208 || 4 == ~size; [2021-11-20 23:35:52,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0 != ~tmp___1~4;#res := ~ret~1; [2021-11-20 23:35:52,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0 != ~tmp___1~4);#res := ~ret~1; [2021-11-20 23:35:52,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc #t~switch208; [2021-11-20 23:35:52,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474: SUMMARY for call #t~ret209 := ldv__builtin_expect((if 0 != ~ret~1 then 1 else 0), 0); srcloc: null [2021-11-20 23:35:52,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume #t~switch208; [2021-11-20 23:35:52,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !#t~switch208;#t~switch208 := #t~switch208 || 16 == ~size; [2021-11-20 23:35:52,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474-1: assume -9223372036854775808 <= #t~ret209 && #t~ret209 <= 9223372036854775807;~tmp___0~9 := #t~ret209;havoc #t~ret209; [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch208;#res := ~ret~1; [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-1: ~tmp___2~3 := #t~ret211;havoc #t~ret211;#res := (if ~tmp___2~3 % 18446744073709551616 % 4294967296 <= 2147483647 then ~tmp___2~3 % 18446744073709551616 % 4294967296 else ~tmp___2~3 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497: SUMMARY for call #t~ret211 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch208;#t~switch208 := #t~switch208 || 2 == ~size; [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume #t~switch208;#res := ~ret~1; [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !#t~switch208;#t~switch208 := #t~switch208 || 8 == ~size; [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487-1: assume -9223372036854775808 <= #t~ret210 && #t~ret210 <= 9223372036854775807;~tmp___1~4 := #t~ret210;havoc #t~ret210; [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487: SUMMARY for call #t~ret210 := ldv__builtin_expect((if 0 != ~ret~1 then 1 else 0), 0); srcloc: null [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume #t~switch208; [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !#t~switch208;#t~switch208 := true; [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0 != ~tmp___0~9;#res := ~ret~1; [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0 != ~tmp___0~9);#res := ~ret~1; [2021-11-20 23:35:52,260 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume #t~switch208; [2021-11-20 23:35:52,261 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !#t~switch208; [2021-11-20 23:35:52,261 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume #t~switch208;#res := ~ret~1; [2021-11-20 23:35:52,261 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !#t~switch208;#t~switch208 := #t~switch208 || 10 == ~size; [2021-11-20 23:35:57,551 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:35:59,235 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:35:59,235 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:35:59,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:59 BoogieIcfgContainer [2021-11-20 23:35:59,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:35:59,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:35:59,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:35:59,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:35:59,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:39" (1/3) ... [2021-11-20 23:35:59,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f27a90e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:59, skipping insertion in model container [2021-11-20 23:35:59,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:43" (2/3) ... [2021-11-20 23:35:59,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f27a90e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:59, skipping insertion in model container [2021-11-20 23:35:59,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:59" (3/3) ... [2021-11-20 23:35:59,250 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-20 23:35:59,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:35:59,256 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:35:59,316 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:35:59,323 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=FINITE_AUTOMATA, 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 [2021-11-20 23:35:59,323 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:35:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 1963 states, 1205 states have (on average 1.3402489626556016) internal successors, (1615), 1255 states have internal predecessors, (1615), 642 states have call successors, (642), 114 states have call predecessors, (642), 114 states have return successors, (642), 630 states have call predecessors, (642), 642 states have call successors, (642) [2021-11-20 23:35:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:35:59,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:59,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:59,396 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:35:59,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:59,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2071767388, now seen corresponding path program 1 times [2021-11-20 23:35:59,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:59,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247271646] [2021-11-20 23:35:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:59,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:59,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:59,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247271646] [2021-11-20 23:35:59,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247271646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:59,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:59,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:35:59,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265950065] [2021-11-20 23:35:59,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:59,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:35:59,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:35:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:59,976 INFO L87 Difference]: Start difference. First operand has 1963 states, 1205 states have (on average 1.3402489626556016) internal successors, (1615), 1255 states have internal predecessors, (1615), 642 states have call successors, (642), 114 states have call predecessors, (642), 114 states have return successors, (642), 630 states have call predecessors, (642), 642 states have call successors, (642) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:02,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:04,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:06,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:06,445 INFO L93 Difference]: Finished difference Result 5819 states and 8724 transitions. [2021-11-20 23:36:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:06,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-20 23:36:06,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:06,504 INFO L225 Difference]: With dead ends: 5819 [2021-11-20 23:36:06,504 INFO L226 Difference]: Without dead ends: 3867 [2021-11-20 23:36:06,527 INFO L932 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 [2021-11-20 23:36:06,532 INFO L933 BasicCegarLoop]: 3274 mSDtfsCounter, 2867 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2869 SdHoareTripleChecker+Valid, 5838 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:06,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2869 Valid, 5838 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 555 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-20 23:36:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2021-11-20 23:36:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3858. [2021-11-20 23:36:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 2368 states have (on average 1.3327702702702702) internal successors, (3156), 2452 states have internal predecessors, (3156), 1264 states have call successors, (1264), 226 states have call predecessors, (1264), 225 states have return successors, (1252), 1228 states have call predecessors, (1252), 1252 states have call successors, (1252) [2021-11-20 23:36:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5672 transitions. [2021-11-20 23:36:07,165 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5672 transitions. Word has length 13 [2021-11-20 23:36:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:07,165 INFO L470 AbstractCegarLoop]: Abstraction has 3858 states and 5672 transitions. [2021-11-20 23:36:07,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5672 transitions. [2021-11-20 23:36:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:36:07,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:07,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:07,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:36:07,171 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:07,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:07,174 INFO L85 PathProgramCache]: Analyzing trace with hash -200871227, now seen corresponding path program 1 times [2021-11-20 23:36:07,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:07,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823349875] [2021-11-20 23:36:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:07,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:07,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:07,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823349875] [2021-11-20 23:36:07,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823349875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:07,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:07,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:07,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789060061] [2021-11-20 23:36:07,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:07,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:07,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:07,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:07,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:07,392 INFO L87 Difference]: Start difference. First operand 3858 states and 5672 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:09,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:11,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:13,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:13,427 INFO L93 Difference]: Finished difference Result 3871 states and 5684 transitions. [2021-11-20 23:36:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:13,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-20 23:36:13,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:13,458 INFO L225 Difference]: With dead ends: 3871 [2021-11-20 23:36:13,459 INFO L226 Difference]: Without dead ends: 3868 [2021-11-20 23:36:13,462 INFO L932 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 [2021-11-20 23:36:13,463 INFO L933 BasicCegarLoop]: 3253 mSDtfsCounter, 2844 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 5802 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:13,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2846 Valid, 5802 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 554 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 23:36:13,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-11-20 23:36:13,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3859. [2021-11-20 23:36:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 2369 states have (on average 1.3326298016040523) internal successors, (3157), 2453 states have internal predecessors, (3157), 1264 states have call successors, (1264), 226 states have call predecessors, (1264), 225 states have return successors, (1252), 1228 states have call predecessors, (1252), 1252 states have call successors, (1252) [2021-11-20 23:36:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 5673 transitions. [2021-11-20 23:36:13,753 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 5673 transitions. Word has length 14 [2021-11-20 23:36:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:13,753 INFO L470 AbstractCegarLoop]: Abstraction has 3859 states and 5673 transitions. [2021-11-20 23:36:13,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 5673 transitions. [2021-11-20 23:36:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:36:13,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:13,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:13,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:36:13,755 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:13,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:13,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1933186689, now seen corresponding path program 1 times [2021-11-20 23:36:13,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:13,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696421027] [2021-11-20 23:36:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:13,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:13,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:13,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696421027] [2021-11-20 23:36:13,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696421027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:13,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:13,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:13,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412497075] [2021-11-20 23:36:13,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:13,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:13,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:13,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:13,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:13,965 INFO L87 Difference]: Start difference. First operand 3859 states and 5673 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:16,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:18,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:20,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:20,320 INFO L93 Difference]: Finished difference Result 3872 states and 5685 transitions. [2021-11-20 23:36:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:20,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-20 23:36:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:20,351 INFO L225 Difference]: With dead ends: 3872 [2021-11-20 23:36:20,351 INFO L226 Difference]: Without dead ends: 3869 [2021-11-20 23:36:20,354 INFO L932 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 [2021-11-20 23:36:20,355 INFO L933 BasicCegarLoop]: 3246 mSDtfsCounter, 2841 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 5798 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:20,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2843 Valid, 5798 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 553 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-20 23:36:20,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2021-11-20 23:36:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 3860. [2021-11-20 23:36:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3860 states, 2370 states have (on average 1.3324894514767933) internal successors, (3158), 2454 states have internal predecessors, (3158), 1264 states have call successors, (1264), 226 states have call predecessors, (1264), 225 states have return successors, (1252), 1228 states have call predecessors, (1252), 1252 states have call successors, (1252) [2021-11-20 23:36:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 5674 transitions. [2021-11-20 23:36:20,628 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 5674 transitions. Word has length 15 [2021-11-20 23:36:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:20,628 INFO L470 AbstractCegarLoop]: Abstraction has 3860 states and 5674 transitions. [2021-11-20 23:36:20,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 5674 transitions. [2021-11-20 23:36:20,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:36:20,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:20,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:20,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:36:20,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:20,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:20,632 INFO L85 PathProgramCache]: Analyzing trace with hash 199613704, now seen corresponding path program 1 times [2021-11-20 23:36:20,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:20,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433967538] [2021-11-20 23:36:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:20,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:20,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:20,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433967538] [2021-11-20 23:36:20,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433967538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:20,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:20,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:20,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676105175] [2021-11-20 23:36:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:20,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:20,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:20,816 INFO L87 Difference]: Start difference. First operand 3860 states and 5674 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:23,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:25,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:26,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:26,859 INFO L93 Difference]: Finished difference Result 9369 states and 13616 transitions. [2021-11-20 23:36:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:26,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-20 23:36:26,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:26,910 INFO L225 Difference]: With dead ends: 9369 [2021-11-20 23:36:26,910 INFO L226 Difference]: Without dead ends: 5548 [2021-11-20 23:36:26,931 INFO L932 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 [2021-11-20 23:36:26,934 INFO L933 BasicCegarLoop]: 2992 mSDtfsCounter, 1563 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 5425 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:26,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 5425 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 562 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2021-11-20 23:36:26,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2021-11-20 23:36:27,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 5520. [2021-11-20 23:36:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5520 states, 3348 states have (on average 1.3186977299880525) internal successors, (4415), 3490 states have internal predecessors, (4415), 1771 states have call successors, (1771), 404 states have call predecessors, (1771), 400 states have return successors, (1770), 1699 states have call predecessors, (1770), 1755 states have call successors, (1770) [2021-11-20 23:36:27,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5520 states to 5520 states and 7956 transitions. [2021-11-20 23:36:27,411 INFO L78 Accepts]: Start accepts. Automaton has 5520 states and 7956 transitions. Word has length 16 [2021-11-20 23:36:27,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:27,411 INFO L470 AbstractCegarLoop]: Abstraction has 5520 states and 7956 transitions. [2021-11-20 23:36:27,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:27,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5520 states and 7956 transitions. [2021-11-20 23:36:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:36:27,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:27,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:27,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:36:27,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1891921314, now seen corresponding path program 1 times [2021-11-20 23:36:27,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:27,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432654201] [2021-11-20 23:36:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:27,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:27,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:27,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432654201] [2021-11-20 23:36:27,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432654201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:27,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:27,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:27,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459964390] [2021-11-20 23:36:27,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:27,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:27,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:27,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:27,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:27,560 INFO L87 Difference]: Start difference. First operand 5520 states and 7956 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:29,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:31,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:33,660 INFO L93 Difference]: Finished difference Result 8288 states and 11952 transitions. [2021-11-20 23:36:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:33,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-20 23:36:33,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:33,752 INFO L225 Difference]: With dead ends: 8288 [2021-11-20 23:36:33,753 INFO L226 Difference]: Without dead ends: 8284 [2021-11-20 23:36:33,759 INFO L932 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 [2021-11-20 23:36:33,762 INFO L933 BasicCegarLoop]: 3184 mSDtfsCounter, 2788 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2790 SdHoareTripleChecker+Valid, 5640 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:33,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2790 Valid, 5640 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 552 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 23:36:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2021-11-20 23:36:34,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8256. [2021-11-20 23:36:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8256 states, 5028 states have (on average 1.3219968178202068) internal successors, (6647), 5242 states have internal predecessors, (6647), 2623 states have call successors, (2623), 613 states have call predecessors, (2623), 604 states have return successors, (2647), 2510 states have call predecessors, (2647), 2607 states have call successors, (2647) [2021-11-20 23:36:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8256 states to 8256 states and 11917 transitions. [2021-11-20 23:36:34,387 INFO L78 Accepts]: Start accepts. Automaton has 8256 states and 11917 transitions. Word has length 17 [2021-11-20 23:36:34,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:34,387 INFO L470 AbstractCegarLoop]: Abstraction has 8256 states and 11917 transitions. [2021-11-20 23:36:34,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:34,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8256 states and 11917 transitions. [2021-11-20 23:36:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:36:34,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:34,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:34,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:36:34,390 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1481112757, now seen corresponding path program 1 times [2021-11-20 23:36:34,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:34,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453805450] [2021-11-20 23:36:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:34,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:34,561 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:34,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453805450] [2021-11-20 23:36:34,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453805450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:34,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:34,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:34,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966496448] [2021-11-20 23:36:34,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:34,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:34,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:34,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:34,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:34,564 INFO L87 Difference]: Start difference. First operand 8256 states and 11917 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:36,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:38,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:40,534 INFO L93 Difference]: Finished difference Result 13689 states and 19812 transitions. [2021-11-20 23:36:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-20 23:36:40,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:40,609 INFO L225 Difference]: With dead ends: 13689 [2021-11-20 23:36:40,609 INFO L226 Difference]: Without dead ends: 13668 [2021-11-20 23:36:40,620 INFO L932 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 [2021-11-20 23:36:40,621 INFO L933 BasicCegarLoop]: 3193 mSDtfsCounter, 2783 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2785 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:40,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2785 Valid, 5662 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 550 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2021-11-20 23:36:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13668 states. [2021-11-20 23:36:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13668 to 13639. [2021-11-20 23:36:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13639 states, 8333 states have (on average 1.3250930037201487) internal successors, (11042), 8699 states have internal predecessors, (11042), 4313 states have call successors, (4313), 1019 states have call predecessors, (4313), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2021-11-20 23:36:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13639 states to 13639 states and 19746 transitions. [2021-11-20 23:36:41,610 INFO L78 Accepts]: Start accepts. Automaton has 13639 states and 19746 transitions. Word has length 18 [2021-11-20 23:36:41,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:41,611 INFO L470 AbstractCegarLoop]: Abstraction has 13639 states and 19746 transitions. [2021-11-20 23:36:41,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:36:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand 13639 states and 19746 transitions. [2021-11-20 23:36:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 23:36:41,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:41,620 INFO L514 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] [2021-11-20 23:36:41,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:36:41,621 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:41,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:41,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1164194431, now seen corresponding path program 1 times [2021-11-20 23:36:41,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:41,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309607990] [2021-11-20 23:36:41,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:41,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:36:41,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:41,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309607990] [2021-11-20 23:36:41,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309607990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:41,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:41,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:41,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736966816] [2021-11-20 23:36:41,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:41,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:41,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:41,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:41,918 INFO L87 Difference]: Start difference. First operand 13639 states and 19746 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 23:36:44,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:46,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:49,136 INFO L93 Difference]: Finished difference Result 28779 states and 42709 transitions. [2021-11-20 23:36:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:49,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2021-11-20 23:36:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:49,226 INFO L225 Difference]: With dead ends: 28779 [2021-11-20 23:36:49,227 INFO L226 Difference]: Without dead ends: 17766 [2021-11-20 23:36:49,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:49,291 INFO L933 BasicCegarLoop]: 3070 mSDtfsCounter, 488 mSDsluCounter, 6036 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 199 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 8555 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:49,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 8555 Invalid, 1079 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [199 Valid, 878 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-11-20 23:36:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17766 states. [2021-11-20 23:36:50,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17766 to 13641. [2021-11-20 23:36:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 8335 states have (on average 1.3250149970005998) internal successors, (11044), 8701 states have internal predecessors, (11044), 4313 states have call successors, (4313), 1019 states have call predecessors, (4313), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2021-11-20 23:36:50,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 19748 transitions. [2021-11-20 23:36:50,413 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 19748 transitions. Word has length 35 [2021-11-20 23:36:50,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:50,414 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 19748 transitions. [2021-11-20 23:36:50,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 23:36:50,415 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 19748 transitions. [2021-11-20 23:36:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 23:36:50,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:50,420 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:50,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:36:50,430 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:50,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1804436506, now seen corresponding path program 1 times [2021-11-20 23:36:50,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:50,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745933528] [2021-11-20 23:36:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:50,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:36:50,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:50,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745933528] [2021-11-20 23:36:50,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745933528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:50,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:50,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:50,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606090124] [2021-11-20 23:36:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:50,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:50,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:50,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:50,663 INFO L87 Difference]: Start difference. First operand 13641 states and 19748 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:36:52,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:55,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:57,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:57,124 INFO L93 Difference]: Finished difference Result 15847 states and 23451 transitions. [2021-11-20 23:36:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:57,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2021-11-20 23:36:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:57,198 INFO L225 Difference]: With dead ends: 15847 [2021-11-20 23:36:57,198 INFO L226 Difference]: Without dead ends: 15832 [2021-11-20 23:36:57,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:57,209 INFO L933 BasicCegarLoop]: 2967 mSDtfsCounter, 469 mSDsluCounter, 5623 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 193 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 8080 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:57,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 8080 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 831 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-20 23:36:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15832 states. [2021-11-20 23:36:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15832 to 13643. [2021-11-20 23:36:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13643 states, 8337 states have (on average 1.3249370277078085) internal successors, (11046), 8703 states have internal predecessors, (11046), 4313 states have call successors, (4313), 1019 states have call predecessors, (4313), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2021-11-20 23:36:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13643 states to 13643 states and 19750 transitions. [2021-11-20 23:36:58,243 INFO L78 Accepts]: Start accepts. Automaton has 13643 states and 19750 transitions. Word has length 39 [2021-11-20 23:36:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:58,244 INFO L470 AbstractCegarLoop]: Abstraction has 13643 states and 19750 transitions. [2021-11-20 23:36:58,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:36:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand 13643 states and 19750 transitions. [2021-11-20 23:36:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 23:36:58,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:58,249 INFO L514 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] [2021-11-20 23:36:58,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:36:58,250 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:58,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:58,250 INFO L85 PathProgramCache]: Analyzing trace with hash -40717220, now seen corresponding path program 1 times [2021-11-20 23:36:58,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:58,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742447697] [2021-11-20 23:36:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:58,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:36:58,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:58,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742447697] [2021-11-20 23:36:58,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742447697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:58,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:58,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:58,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585802137] [2021-11-20 23:36:58,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:58,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:58,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:58,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:58,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:58,532 INFO L87 Difference]: Start difference. First operand 13643 states and 19750 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:00,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:02,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:03,816 INFO L93 Difference]: Finished difference Result 13645 states and 19751 transitions. [2021-11-20 23:37:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:03,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2021-11-20 23:37:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:03,880 INFO L225 Difference]: With dead ends: 13645 [2021-11-20 23:37:03,880 INFO L226 Difference]: Without dead ends: 13642 [2021-11-20 23:37:03,889 INFO L932 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 [2021-11-20 23:37:03,890 INFO L933 BasicCegarLoop]: 2586 mSDtfsCounter, 2837 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:03,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2839 Valid, 2586 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 23:37:03,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13642 states. [2021-11-20 23:37:04,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13642 to 13642. [2021-11-20 23:37:04,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13642 states, 8337 states have (on average 1.3239774499220343) internal successors, (11038), 8702 states have internal predecessors, (11038), 4312 states have call successors, (4312), 1019 states have call predecessors, (4312), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2021-11-20 23:37:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13642 states to 13642 states and 19741 transitions. [2021-11-20 23:37:04,736 INFO L78 Accepts]: Start accepts. Automaton has 13642 states and 19741 transitions. Word has length 43 [2021-11-20 23:37:04,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:04,737 INFO L470 AbstractCegarLoop]: Abstraction has 13642 states and 19741 transitions. [2021-11-20 23:37:04,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:04,737 INFO L276 IsEmpty]: Start isEmpty. Operand 13642 states and 19741 transitions. [2021-11-20 23:37:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 23:37:04,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:04,740 INFO L514 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] [2021-11-20 23:37:04,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:37:04,741 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1263384635, now seen corresponding path program 1 times [2021-11-20 23:37:04,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:04,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915811660] [2021-11-20 23:37:04,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:04,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:37:04,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:04,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915811660] [2021-11-20 23:37:04,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915811660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:04,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:04,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:04,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700899439] [2021-11-20 23:37:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:04,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:04,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:04,939 INFO L87 Difference]: Start difference. First operand 13642 states and 19741 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:07,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:09,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:10,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:10,014 INFO L93 Difference]: Finished difference Result 13644 states and 19742 transitions. [2021-11-20 23:37:10,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:10,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2021-11-20 23:37:10,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:10,162 INFO L225 Difference]: With dead ends: 13644 [2021-11-20 23:37:10,162 INFO L226 Difference]: Without dead ends: 13641 [2021-11-20 23:37:10,167 INFO L932 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 [2021-11-20 23:37:10,168 INFO L933 BasicCegarLoop]: 2584 mSDtfsCounter, 2834 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:10,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 2584 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2021-11-20 23:37:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13641 states. [2021-11-20 23:37:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13641 to 13641. [2021-11-20 23:37:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 8337 states have (on average 1.32301787213626) internal successors, (11030), 8701 states have internal predecessors, (11030), 4311 states have call successors, (4311), 1019 states have call predecessors, (4311), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2021-11-20 23:37:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 19732 transitions. [2021-11-20 23:37:10,938 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 19732 transitions. Word has length 44 [2021-11-20 23:37:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:10,941 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 19732 transitions. [2021-11-20 23:37:10,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:10,942 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 19732 transitions. [2021-11-20 23:37:10,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 23:37:10,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:10,946 INFO L514 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] [2021-11-20 23:37:10,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:37:10,946 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:10,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:10,947 INFO L85 PathProgramCache]: Analyzing trace with hash -947465374, now seen corresponding path program 1 times [2021-11-20 23:37:10,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:10,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156673661] [2021-11-20 23:37:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:10,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:37:11,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:11,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156673661] [2021-11-20 23:37:11,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156673661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:11,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:11,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:11,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091025003] [2021-11-20 23:37:11,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:11,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:11,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:11,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:11,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:11,112 INFO L87 Difference]: Start difference. First operand 13641 states and 19732 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:13,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:15,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:16,692 INFO L93 Difference]: Finished difference Result 22366 states and 31448 transitions. [2021-11-20 23:37:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:16,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2021-11-20 23:37:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:16,763 INFO L225 Difference]: With dead ends: 22366 [2021-11-20 23:37:16,764 INFO L226 Difference]: Without dead ends: 13012 [2021-11-20 23:37:16,811 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:37:16,811 INFO L933 BasicCegarLoop]: 2491 mSDtfsCounter, 1345 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:16,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 3782 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2021-11-20 23:37:16,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13012 states. [2021-11-20 23:37:17,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13012 to 12985. [2021-11-20 23:37:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12985 states, 7870 states have (on average 1.3027954256670902) internal successors, (10253), 8167 states have internal predecessors, (10253), 4001 states have call successors, (4001), 1143 states have call predecessors, (4001), 1113 states have return successors, (4058), 3829 states have call predecessors, (4058), 3988 states have call successors, (4058) [2021-11-20 23:37:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12985 states to 12985 states and 18312 transitions. [2021-11-20 23:37:17,590 INFO L78 Accepts]: Start accepts. Automaton has 12985 states and 18312 transitions. Word has length 44 [2021-11-20 23:37:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:17,591 INFO L470 AbstractCegarLoop]: Abstraction has 12985 states and 18312 transitions. [2021-11-20 23:37:17,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:17,591 INFO L276 IsEmpty]: Start isEmpty. Operand 12985 states and 18312 transitions. [2021-11-20 23:37:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 23:37:17,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:17,594 INFO L514 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] [2021-11-20 23:37:17,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:37:17,595 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -511363969, now seen corresponding path program 1 times [2021-11-20 23:37:17,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:17,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480572415] [2021-11-20 23:37:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:17,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:37:17,760 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:17,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480572415] [2021-11-20 23:37:17,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480572415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:17,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:17,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:17,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463304550] [2021-11-20 23:37:17,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:17,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:17,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:17,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:17,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:17,762 INFO L87 Difference]: Start difference. First operand 12985 states and 18312 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:19,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:22,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:22,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:22,795 INFO L93 Difference]: Finished difference Result 12987 states and 18313 transitions. [2021-11-20 23:37:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:22,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2021-11-20 23:37:22,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:22,858 INFO L225 Difference]: With dead ends: 12987 [2021-11-20 23:37:22,859 INFO L226 Difference]: Without dead ends: 12966 [2021-11-20 23:37:22,867 INFO L932 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 [2021-11-20 23:37:22,868 INFO L933 BasicCegarLoop]: 2347 mSDtfsCounter, 2583 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2585 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:22,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2585 Valid, 2347 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2021-11-20 23:37:22,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2021-11-20 23:37:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 12966. [2021-11-20 23:37:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12966 states, 7858 states have (on average 1.301985237974039) internal successors, (10231), 8154 states have internal predecessors, (10231), 3996 states have call successors, (3996), 1141 states have call predecessors, (3996), 1111 states have return successors, (4054), 3825 states have call predecessors, (4054), 3984 states have call successors, (4054) [2021-11-20 23:37:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12966 states to 12966 states and 18281 transitions. [2021-11-20 23:37:23,751 INFO L78 Accepts]: Start accepts. Automaton has 12966 states and 18281 transitions. Word has length 45 [2021-11-20 23:37:23,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:23,752 INFO L470 AbstractCegarLoop]: Abstraction has 12966 states and 18281 transitions. [2021-11-20 23:37:23,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:23,752 INFO L276 IsEmpty]: Start isEmpty. Operand 12966 states and 18281 transitions. [2021-11-20 23:37:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-20 23:37:23,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:23,754 INFO L514 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] [2021-11-20 23:37:23,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:37:23,755 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:23,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:23,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1326445064, now seen corresponding path program 1 times [2021-11-20 23:37:23,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:23,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43033182] [2021-11-20 23:37:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:23,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:37:23,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:23,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43033182] [2021-11-20 23:37:23,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43033182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:23,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:23,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:23,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063147014] [2021-11-20 23:37:23,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:23,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:23,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:23,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:23,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:23,935 INFO L87 Difference]: Start difference. First operand 12966 states and 18281 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:26,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:28,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:29,351 INFO L93 Difference]: Finished difference Result 12971 states and 18284 transitions. [2021-11-20 23:37:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:29,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2021-11-20 23:37:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:29,405 INFO L225 Difference]: With dead ends: 12971 [2021-11-20 23:37:29,406 INFO L226 Difference]: Without dead ends: 12948 [2021-11-20 23:37:29,414 INFO L932 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 [2021-11-20 23:37:29,415 INFO L933 BasicCegarLoop]: 2402 mSDtfsCounter, 1429 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:29,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 3614 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 411 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2021-11-20 23:37:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12948 states. [2021-11-20 23:37:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12948 to 12858. [2021-11-20 23:37:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12858 states, 7793 states have (on average 1.3032208392146798) internal successors, (10156), 8079 states have internal predecessors, (10156), 3959 states have call successors, (3959), 1127 states have call predecessors, (3959), 1105 states have return successors, (4018), 3806 states have call predecessors, (4018), 3948 states have call successors, (4018) [2021-11-20 23:37:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12858 states to 12858 states and 18133 transitions. [2021-11-20 23:37:30,130 INFO L78 Accepts]: Start accepts. Automaton has 12858 states and 18133 transitions. Word has length 46 [2021-11-20 23:37:30,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:30,131 INFO L470 AbstractCegarLoop]: Abstraction has 12858 states and 18133 transitions. [2021-11-20 23:37:30,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:30,131 INFO L276 IsEmpty]: Start isEmpty. Operand 12858 states and 18133 transitions. [2021-11-20 23:37:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 23:37:30,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:30,135 INFO L514 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] [2021-11-20 23:37:30,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:37:30,135 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:30,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:30,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1831012190, now seen corresponding path program 1 times [2021-11-20 23:37:30,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:30,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743668852] [2021-11-20 23:37:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:30,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:37:30,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:30,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743668852] [2021-11-20 23:37:30,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743668852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:30,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:30,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:30,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060390360] [2021-11-20 23:37:30,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:30,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:30,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:30,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:30,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:30,302 INFO L87 Difference]: Start difference. First operand 12858 states and 18133 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:32,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:34,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:35,288 INFO L93 Difference]: Finished difference Result 12896 states and 18158 transitions. [2021-11-20 23:37:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:35,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2021-11-20 23:37:35,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:35,338 INFO L225 Difference]: With dead ends: 12896 [2021-11-20 23:37:35,338 INFO L226 Difference]: Without dead ends: 12868 [2021-11-20 23:37:35,347 INFO L932 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 [2021-11-20 23:37:35,348 INFO L933 BasicCegarLoop]: 2340 mSDtfsCounter, 2513 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2515 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:35,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2515 Valid, 2405 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2021-11-20 23:37:35,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12868 states. [2021-11-20 23:37:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12868 to 12816. [2021-11-20 23:37:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12816 states, 7770 states have (on average 1.302960102960103) internal successors, (10124), 8049 states have internal predecessors, (10124), 3931 states have call successors, (3931), 1129 states have call predecessors, (3931), 1114 states have return successors, (3992), 3792 states have call predecessors, (3992), 3922 states have call successors, (3992) [2021-11-20 23:37:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12816 states to 12816 states and 18047 transitions. [2021-11-20 23:37:36,108 INFO L78 Accepts]: Start accepts. Automaton has 12816 states and 18047 transitions. Word has length 47 [2021-11-20 23:37:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:36,109 INFO L470 AbstractCegarLoop]: Abstraction has 12816 states and 18047 transitions. [2021-11-20 23:37:36,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 12816 states and 18047 transitions. [2021-11-20 23:37:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-20 23:37:36,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:36,112 INFO L514 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] [2021-11-20 23:37:36,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:37:36,113 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash -927934389, now seen corresponding path program 1 times [2021-11-20 23:37:36,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:36,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819409427] [2021-11-20 23:37:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:36,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:37:36,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:36,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819409427] [2021-11-20 23:37:36,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819409427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:36,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:36,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:36,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106214321] [2021-11-20 23:37:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:36,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:36,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:36,288 INFO L87 Difference]: Start difference. First operand 12816 states and 18047 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:38,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:40,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:41,552 INFO L93 Difference]: Finished difference Result 12830 states and 18054 transitions. [2021-11-20 23:37:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:41,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2021-11-20 23:37:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:41,596 INFO L225 Difference]: With dead ends: 12830 [2021-11-20 23:37:41,596 INFO L226 Difference]: Without dead ends: 12788 [2021-11-20 23:37:41,603 INFO L932 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 [2021-11-20 23:37:41,603 INFO L933 BasicCegarLoop]: 2338 mSDtfsCounter, 2509 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:41,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2511 Valid, 2394 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 272 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2021-11-20 23:37:41,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12788 states. [2021-11-20 23:37:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12788 to 12745. [2021-11-20 23:37:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12745 states, 7727 states have (on average 1.3023165523489064) internal successors, (10063), 8005 states have internal predecessors, (10063), 3900 states have call successors, (3900), 1121 states have call predecessors, (3900), 1117 states have return successors, (3963), 3773 states have call predecessors, (3963), 3893 states have call successors, (3963) [2021-11-20 23:37:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 17926 transitions. [2021-11-20 23:37:42,275 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 17926 transitions. Word has length 48 [2021-11-20 23:37:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:42,275 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 17926 transitions. [2021-11-20 23:37:42,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:37:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 17926 transitions. [2021-11-20 23:37:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 23:37:42,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:42,279 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 23:37:42,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:37:42,279 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2009586775, now seen corresponding path program 1 times [2021-11-20 23:37:42,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:42,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800025122] [2021-11-20 23:37:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:42,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:37:42,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:42,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800025122] [2021-11-20 23:37:42,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800025122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:42,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:42,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:37:42,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968693933] [2021-11-20 23:37:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:42,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:37:42,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:37:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:37:42,449 INFO L87 Difference]: Start difference. First operand 12745 states and 17926 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:37:44,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:46,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:48,725 INFO L93 Difference]: Finished difference Result 14704 states and 20672 transitions. [2021-11-20 23:37:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:37:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2021-11-20 23:37:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:48,759 INFO L225 Difference]: With dead ends: 14704 [2021-11-20 23:37:48,759 INFO L226 Difference]: Without dead ends: 12745 [2021-11-20 23:37:48,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:37:48,770 INFO L933 BasicCegarLoop]: 2314 mSDtfsCounter, 3 mSDsluCounter, 7711 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9247 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:48,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 9247 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1055 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 23:37:48,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12745 states. [2021-11-20 23:37:49,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12745 to 12745. [2021-11-20 23:37:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12745 states, 7727 states have (on average 1.3021871360165653) internal successors, (10062), 8004 states have internal predecessors, (10062), 3900 states have call successors, (3900), 1121 states have call predecessors, (3900), 1117 states have return successors, (3963), 3773 states have call predecessors, (3963), 3893 states have call successors, (3963) [2021-11-20 23:37:49,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 17925 transitions. [2021-11-20 23:37:49,380 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 17925 transitions. Word has length 57 [2021-11-20 23:37:49,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:49,380 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 17925 transitions. [2021-11-20 23:37:49,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:37:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 17925 transitions. [2021-11-20 23:37:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-20 23:37:49,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:49,385 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 23:37:49,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 23:37:49,386 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:49,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:49,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1117907602, now seen corresponding path program 1 times [2021-11-20 23:37:49,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:49,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475993780] [2021-11-20 23:37:49,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:49,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:37:49,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:49,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475993780] [2021-11-20 23:37:49,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475993780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:49,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:49,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:37:49,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818501287] [2021-11-20 23:37:49,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:49,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:37:49,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:49,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:37:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:37:49,540 INFO L87 Difference]: Start difference. First operand 12745 states and 17925 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 23:37:51,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:53,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:56,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:56,001 INFO L93 Difference]: Finished difference Result 25439 states and 35786 transitions. [2021-11-20 23:37:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:37:56,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2021-11-20 23:37:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:56,045 INFO L225 Difference]: With dead ends: 25439 [2021-11-20 23:37:56,046 INFO L226 Difference]: Without dead ends: 12727 [2021-11-20 23:37:56,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:37:56,082 INFO L933 BasicCegarLoop]: 2313 mSDtfsCounter, 4 mSDsluCounter, 7706 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 9241 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:56,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 9241 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1051 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 23:37:56,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12727 states. [2021-11-20 23:37:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12727 to 12727. [2021-11-20 23:37:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12727 states, 7717 states have (on average 1.302060386160425) internal successors, (10048), 7994 states have internal predecessors, (10048), 3896 states have call successors, (3896), 1117 states have call predecessors, (3896), 1113 states have return successors, (3959), 3769 states have call predecessors, (3959), 3889 states have call successors, (3959) [2021-11-20 23:37:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 17903 transitions. [2021-11-20 23:37:56,580 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 17903 transitions. Word has length 61 [2021-11-20 23:37:56,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:56,581 INFO L470 AbstractCegarLoop]: Abstraction has 12727 states and 17903 transitions. [2021-11-20 23:37:56,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 23:37:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 17903 transitions. [2021-11-20 23:37:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:37:56,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:56,588 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 23:37:56,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 23:37:56,588 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:56,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:56,589 INFO L85 PathProgramCache]: Analyzing trace with hash -889745118, now seen corresponding path program 1 times [2021-11-20 23:37:56,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:56,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654227509] [2021-11-20 23:37:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:56,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 23:37:58,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:58,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654227509] [2021-11-20 23:37:58,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654227509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:58,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:58,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:37:58,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633313284] [2021-11-20 23:37:58,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:58,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:37:58,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:58,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:37:58,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:37:58,442 INFO L87 Difference]: Start difference. First operand 12727 states and 17903 transitions. Second operand has 16 states, 9 states have (on average 6.0) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-20 23:38:01,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:05,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:13,253 INFO L93 Difference]: Finished difference Result 12752 states and 17922 transitions. [2021-11-20 23:38:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 23:38:13,253 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 9 states have (on average 6.0) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 80 [2021-11-20 23:38:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:13,279 INFO L225 Difference]: With dead ends: 12752 [2021-11-20 23:38:13,279 INFO L226 Difference]: Without dead ends: 10788 [2021-11-20 23:38:13,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-11-20 23:38:13,290 INFO L933 BasicCegarLoop]: 2182 mSDtfsCounter, 6 mSDsluCounter, 31546 mSDsCounter, 0 mSdLazyCounter, 5466 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30405 SdHoareTripleChecker+Invalid, 5478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 5466 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:13,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30405 Invalid, 5478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 5466 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2021-11-20 23:38:13,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10788 states. [2021-11-20 23:38:13,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 10788. [2021-11-20 23:38:13,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10788 states, 6541 states have (on average 1.3030117719003211) internal successors, (8523), 6784 states have internal predecessors, (8523), 3292 states have call successors, (3292), 958 states have call predecessors, (3292), 954 states have return successors, (3355), 3177 states have call predecessors, (3355), 3285 states have call successors, (3355) [2021-11-20 23:38:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10788 states to 10788 states and 15170 transitions. [2021-11-20 23:38:13,706 INFO L78 Accepts]: Start accepts. Automaton has 10788 states and 15170 transitions. Word has length 80 [2021-11-20 23:38:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:13,706 INFO L470 AbstractCegarLoop]: Abstraction has 10788 states and 15170 transitions. [2021-11-20 23:38:13,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 9 states have (on average 6.0) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-20 23:38:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 10788 states and 15170 transitions. [2021-11-20 23:38:13,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:38:13,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:13,710 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-20 23:38:13,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 23:38:13,711 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:13,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:13,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1332536016, now seen corresponding path program 1 times [2021-11-20 23:38:13,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:13,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281419094] [2021-11-20 23:38:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:13,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:38:21,478 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:38:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:38:27,459 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:38:27,459 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:38:27,461 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:38:27,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 23:38:27,467 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:27,470 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:38:27,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:38:27 BoogieIcfgContainer [2021-11-20 23:38:27,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:38:27,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:38:27,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:38:27,650 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:38:27,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:59" (3/4) ... [2021-11-20 23:38:27,653 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 23:38:27,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:38:27,654 INFO L158 Benchmark]: Toolchain (without parser) took 168482.86ms. Allocated memory was 113.2MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 76.8MB in the beginning and 703.9MB in the end (delta: -627.1MB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2021-11-20 23:38:27,654 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 58.4MB in the beginning and 58.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:38:27,659 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4756.73ms. Allocated memory was 113.2MB in the beginning and 253.8MB in the end (delta: 140.5MB). Free memory was 76.8MB in the beginning and 159.7MB in the end (delta: -82.9MB). Peak memory consumption was 98.3MB. Max. memory is 16.1GB. [2021-11-20 23:38:27,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 419.37ms. Allocated memory is still 253.8MB. Free memory was 159.7MB in the beginning and 116.7MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2021-11-20 23:38:27,659 INFO L158 Benchmark]: Boogie Preprocessor took 459.56ms. Allocated memory is still 253.8MB. Free memory was 116.7MB in the beginning and 115.2MB in the end (delta: 1.6MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2021-11-20 23:38:27,662 INFO L158 Benchmark]: RCFGBuilder took 14427.78ms. Allocated memory was 253.8MB in the beginning and 570.4MB in the end (delta: 316.7MB). Free memory was 115.2MB in the beginning and 310.1MB in the end (delta: -194.9MB). Peak memory consumption was 312.4MB. Max. memory is 16.1GB. [2021-11-20 23:38:27,663 INFO L158 Benchmark]: TraceAbstraction took 148405.67ms. Allocated memory was 570.4MB in the beginning and 2.2GB in the end (delta: 1.6GB). Free memory was 310.1MB in the beginning and 703.9MB in the end (delta: -393.8MB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2021-11-20 23:38:27,663 INFO L158 Benchmark]: Witness Printer took 3.92ms. Allocated memory is still 2.2GB. Free memory is still 703.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:38:27,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 58.4MB in the beginning and 58.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4756.73ms. Allocated memory was 113.2MB in the beginning and 253.8MB in the end (delta: 140.5MB). Free memory was 76.8MB in the beginning and 159.7MB in the end (delta: -82.9MB). Peak memory consumption was 98.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 419.37ms. Allocated memory is still 253.8MB. Free memory was 159.7MB in the beginning and 116.7MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 459.56ms. Allocated memory is still 253.8MB. Free memory was 116.7MB in the beginning and 115.2MB in the end (delta: 1.6MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * RCFGBuilder took 14427.78ms. Allocated memory was 253.8MB in the beginning and 570.4MB in the end (delta: 316.7MB). Free memory was 115.2MB in the beginning and 310.1MB in the end (delta: -194.9MB). Peak memory consumption was 312.4MB. Max. memory is 16.1GB. * TraceAbstraction took 148405.67ms. Allocated memory was 570.4MB in the beginning and 2.2GB in the end (delta: 1.6GB). Free memory was 310.1MB in the beginning and 703.9MB in the end (delta: -393.8MB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 3.92ms. Allocated memory is still 2.2GB. Free memory is still 703.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13668]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 12845, overapproximation of bitwiseAnd at line 12804. Possible FailurePath: [L7687] static unsigned int vhost_zcopy_mask ; [L10792] static struct target_fabric_configfs *tcm_vhost_fabric_configfs ; [L10793] static struct workqueue_struct *tcm_vhost_workqueue ; [L10794-L10797] static struct mutex tcm_vhost_mutex = {{1}, {{{{{0U}}, 3735899821U, 4294967295U, 0xffffffffffffffffUL, {0, {0, 0}, "tcm_vhost_mutex.wait_lock", 0, 0UL}}}}, {& tcm_vhost_mutex.wait_list, & tcm_vhost_mutex.wait_list}, 0, 0, (void *)(& tcm_vhost_mutex), {0, {0, 0}, "tcm_vhost_mutex", 0, 0UL}}; [L10798] static struct list_head tcm_vhost_list = {& tcm_vhost_list, & tcm_vhost_list}; [L12183-L12186] static struct file_operations const vhost_scsi_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_scsi_ioctl, & vhost_scsi_compat_ioctl, 0, & vhost_scsi_open, 0, & vhost_scsi_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L12187-L12188] static struct miscdevice vhost_scsi_misc = {255, "vhost-scsi", & vhost_scsi_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L12540] static struct target_fabric_tpg_attribute tcm_vhost_tpg_nexus = {{"nexus", & __this_module, 420U}, & tcm_vhost_tpg_show_nexus, & tcm_vhost_tpg_store_nexus}; [L12541] static struct configfs_attribute *tcm_vhost_tpg_attrs[2U] = { & tcm_vhost_tpg_nexus.attr, 0}; [L12732] static struct target_fabric_wwn_attribute tcm_vhost_wwn_version = {{"version", & __this_module, 292U}, & tcm_vhost_wwn_show_attr_version, 0}; [L12733] static struct configfs_attribute *tcm_vhost_wwn_attrs[2U] = { & tcm_vhost_wwn_version.attr, 0}; [L12734-L12745] static struct target_core_fabric_ops tcm_vhost_ops = {0, & tcm_vhost_get_fabric_name, & tcm_vhost_get_fabric_proto_ident, & tcm_vhost_get_fabric_wwn, & tcm_vhost_get_tag, & tcm_vhost_get_default_depth, & tcm_vhost_get_pr_transport_id, & tcm_vhost_get_pr_transport_id_len, & tcm_vhost_parse_pr_out_transport_id, & tcm_vhost_check_true, & tcm_vhost_check_true, & tcm_vhost_check_false, & tcm_vhost_check_false, 0, & tcm_vhost_alloc_fabric_acl, & tcm_vhost_release_fabric_acl, & tcm_vhost_tpg_get_inst_index, 0, & tcm_vhost_release_cmd, 0, & tcm_vhost_shutdown_session, & tcm_vhost_close_session, & tcm_vhost_sess_get_index, 0, & tcm_vhost_write_pending, & tcm_vhost_write_pending_status, & tcm_vhost_set_default_node_attrs, & tcm_vhost_get_task_tag, & tcm_vhost_get_cmd_state, & tcm_vhost_queue_data_in, & tcm_vhost_queue_status, & tcm_vhost_queue_tm_rsp, & tcm_vhost_make_tport, & tcm_vhost_drop_tport, & tcm_vhost_make_tpg, & tcm_vhost_drop_tpg, & tcm_vhost_port_link, & tcm_vhost_port_unlink, 0, 0, & tcm_vhost_make_nodeacl, & tcm_vhost_drop_nodeacl}; [L12885] int LDV_IN_INTERRUPT ; [L13678] static int ldv_mutex_cred_guard_mutex ; [L13785] static int ldv_mutex_lock ; [L13892] static int ldv_mutex_mtx ; [L13999] static int ldv_mutex_mutex ; [L14106] static int ldv_mutex_tcm_vhost_mutex ; [L14213] static int ldv_mutex_tv_tpg_mutex ; [L12888] struct inode *var_group1 ; [L12889] struct file *var_group2 ; [L12890] unsigned int var_vhost_scsi_ioctl_44_p1 ; [L12891] unsigned long var_vhost_scsi_ioctl_44_p2 ; [L12892] unsigned int var_vhost_scsi_compat_ioctl_45_p1 ; [L12893] unsigned long var_vhost_scsi_compat_ioctl_45_p2 ; [L12894] int res_vhost_scsi_open_39 ; [L12895] struct se_portal_group *var_group3 ; [L12896] struct se_node_acl *var_group4 ; [L12897] struct t10_pr_registration *var_tcm_vhost_get_pr_transport_id_7_p2 ; [L12898] int *var_tcm_vhost_get_pr_transport_id_7_p3 ; [L12899] unsigned char *var_tcm_vhost_get_pr_transport_id_7_p4 ; [L12900] struct t10_pr_registration *var_tcm_vhost_get_pr_transport_id_len_8_p2 ; [L12901] int *var_tcm_vhost_get_pr_transport_id_len_8_p3 ; [L12902] char const *var_tcm_vhost_parse_pr_out_transport_id_9_p1 ; [L12903] u32 *var_tcm_vhost_parse_pr_out_transport_id_9_p2 ; [L12904] char **var_tcm_vhost_parse_pr_out_transport_id_9_p3 ; [L12905] struct se_cmd *var_group5 ; [L12906] struct se_session *var_group6 ; [L12907] struct target_fabric_configfs *var_group7 ; [L12908] struct config_group *var_group8 ; [L12909] char const *var_tcm_vhost_make_tport_59_p2 ; [L12910] struct se_wwn *var_group9 ; [L12911] char const *var_tcm_vhost_make_tpg_57_p2 ; [L12912] struct se_lun *var_group10 ; [L12913] char const *var_tcm_vhost_make_nodeacl_51_p2 ; [L12914] int ldv_s_vhost_scsi_fops_file_operations ; [L12915] int tmp ; [L12916] int tmp___0 ; [L12917] int tmp___1 ; [L12919] ldv_s_vhost_scsi_fops_file_operations = 0 [L12920] LDV_IN_INTERRUPT = 1 [L12921] CALL ldv_initialize() [L14323] ldv_mutex_cred_guard_mutex = 1 [L14324] ldv_mutex_lock = 1 [L14325] ldv_mutex_mtx = 1 [L14326] ldv_mutex_mutex = 1 [L14327] ldv_mutex_tcm_vhost_mutex = 1 [L14328] ldv_mutex_tv_tpg_mutex = 1 [L12921] RET ldv_initialize() [L12922] FCALL ldv_handler_precall() VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:0}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12923] CALL, EXPR tcm_vhost_init() [L12839] int ret ; [L12840] struct lock_class_key __key ; [L12841] char const *__lock_name ; [L12842] struct workqueue_struct *tmp ; [L12844] ret = -12 [L12845] __lock_name = "tcm_vhost" [L12846] tmp = __alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name) [L12847] tcm_vhost_workqueue = tmp VAL [__alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name)={365:-364}, __key={18446744073709547525:0}, __lock_name={354:0}, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=-12, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp={365:-364}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12848] COND FALSE !((unsigned long )tcm_vhost_workqueue == (unsigned long )((struct workqueue_struct *)0)) [L12852] CALL, EXPR vhost_scsi_register() [L12191] int tmp ; [L12193] CALL, EXPR misc_register(& vhost_scsi_misc) [L14561] return __VERIFIER_nondet_int(); [L12193] RET, EXPR misc_register(& vhost_scsi_misc) [L12193] tmp = misc_register(& vhost_scsi_misc) [L12194] return (tmp); [L12852] RET, EXPR vhost_scsi_register() [L12852] ret = vhost_scsi_register() [L12853] COND FALSE !(ret < 0) [L12857] CALL, EXPR tcm_vhost_register_configfs() [L12748] struct target_fabric_configfs *fabric ; [L12749] int ret ; [L12750] struct _ddebug descriptor ; [L12751] struct new_utsname *tmp ; [L12752] struct new_utsname *tmp___0 ; [L12753] long tmp___1 ; [L12754] long tmp___2 ; [L12755] long tmp___3 ; [L12756] struct _ddebug descriptor___0 ; [L12757] long tmp___4 ; [L12759] descriptor.modname = "tcm_vhost" [L12760] descriptor.function = "tcm_vhost_register_configfs" [L12761] descriptor.filename = "/work/vladimir/UFO/Work/test/work/current--X--drivers/vhost/tcm_vhost.ko--X--defaultlinux-3.7.3--X--32_7a--X--ufo/linux-3.7.3/csd_deg_dscv/12/dscv_tempdir/dscv/ri/32_7a/drivers/vhost/tcm_vhost.c.prepared" [L12762] descriptor.format = "TCM_VHOST fabric module %s on %s/%s on 3.7.3\n" [L12763] descriptor.lineno = 1561U [L12764] descriptor.flags = 0U [L12765] EXPR descriptor.flags VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor.flags=0, descriptor___0={18446744073709547526:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12765] CALL, EXPR ldv__builtin_expect((long )descriptor.flags & 1L, 0L) VAL [\old(c)=0, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13675] return (exp); [L12765] RET, EXPR ldv__builtin_expect((long )descriptor.flags & 1L, 0L) VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor.flags=0, descriptor___0={18446744073709547526:0}, ldv__builtin_expect((long )descriptor.flags & 1L, 0L)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12765] tmp___1 = ldv__builtin_expect((long )descriptor.flags & 1L, 0L) [L12766] COND FALSE !(tmp___1 != 0L) VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor___0={18446744073709547526:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12773] CALL, EXPR target_fabric_configfs_init(& __this_module, "vhost") [L14636] CALL, EXPR ldv_malloc(sizeof(struct target_fabric_configfs)) VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L7220] COND FALSE !(__VERIFIER_nondet_int()) [L7225] return ((void *)0); [L14636] RET, EXPR ldv_malloc(sizeof(struct target_fabric_configfs)) VAL [__this_module={36893488147419103284:36893488147419103246}, arg0={36893488147419103284:36893488147419103246}, arg0={36893488147419103284:36893488147419103246}, arg1={341:0}, arg1={341:0}, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct target_fabric_configfs))={0:0}, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14636] return ldv_malloc(sizeof(struct target_fabric_configfs)); [L12773] RET, EXPR target_fabric_configfs_init(& __this_module, "vhost") [L12773] fabric = target_fabric_configfs_init(& __this_module, "vhost") [L12774] CALL, EXPR IS_ERR((void const *)fabric) VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6795] long tmp ; VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6797] CALL, EXPR ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) VAL [\old(c)=0, \old(exp)=0, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13675] return (exp); [L6797] RET, EXPR ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) VAL [__this_module={36893488147419103284:36893488147419103246}, ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6797] tmp = ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) [L6798] return (tmp); [L12774] RET, EXPR IS_ERR((void const *)fabric) VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor___0={18446744073709547526:0}, fabric={0:0}, IS_ERR((void const *)fabric)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12774] tmp___3 = IS_ERR((void const *)fabric) [L12775] COND FALSE !(tmp___3 != 0L) [L12781] fabric->tf_ops = tcm_vhost_ops [L12782] fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = (struct configfs_attribute **)(& tcm_vhost_wwn_attrs) [L12783] fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = (struct configfs_attribute **)(& tcm_vhost_tpg_attrs) [L12784] fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = 0 [L12785] fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = 0 [L12786] fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = 0 [L12787] fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = 0 [L12788] fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = 0 [L12789] fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = 0 [L12790] fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = 0 [L12791] CALL, EXPR target_fabric_configfs_register(fabric) [L14640] return __VERIFIER_nondet_int(); [L12791] RET, EXPR target_fabric_configfs_register(fabric) [L12791] ret = target_fabric_configfs_register(fabric) [L12792] COND FALSE !(ret < 0) [L12797] tcm_vhost_fabric_configfs = fabric [L12798] descriptor___0.modname = "tcm_vhost" [L12799] descriptor___0.function = "tcm_vhost_register_configfs" [L12800] descriptor___0.filename = "/work/vladimir/UFO/Work/test/work/current--X--drivers/vhost/tcm_vhost.ko--X--defaultlinux-3.7.3--X--32_7a--X--ufo/linux-3.7.3/csd_deg_dscv/12/dscv_tempdir/dscv/ri/32_7a/drivers/vhost/tcm_vhost.c.prepared" [L12801] descriptor___0.format = "TCM_VHOST[0] - Set fabric -> tcm_vhost_fabric_configfs\n" [L12802] descriptor___0.lineno = 1599U [L12803] descriptor___0.flags = 0U [L12804] EXPR descriptor___0.flags VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor___0={18446744073709547526:0}, descriptor___0.flags=0, fabric={0:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12804] CALL, EXPR ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) VAL [\old(c)=0, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13675] return (exp); [L12804] RET, EXPR ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor___0={18446744073709547526:0}, descriptor___0.flags=0, fabric={0:0}, ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L)=-2, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12804] tmp___4 = ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) [L12805] COND TRUE tmp___4 != 0L [L12809] return (0); [L12809] return (0); [L12809] return (0); VAL [\result=0, __dynamic_pr_debug(& descriptor___0, "TCM_VHOST[0] - Set fabric -> tcm_vhost_fabric_configfs\n")=36893488147419103234, __this_module={36893488147419103284:36893488147419103246}, fabric={0:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, tmp___4=-2, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12857] RET, EXPR tcm_vhost_register_configfs() [L12857] ret = tcm_vhost_register_configfs() [L12858] COND FALSE !(ret < 0) [L12862] return (0); [L12862] return (0); VAL [\result=0, __alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name)={365:-364}, __lock_name={354:0}, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp={365:-364}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12923] RET, EXPR tcm_vhost_init() [L12923] tmp = tcm_vhost_init() [L12924] COND FALSE !(tmp != 0) VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13102] tmp___1 = __VERIFIER_nondet_int() [L13103] COND TRUE tmp___1 != 0 || ldv_s_vhost_scsi_fops_file_operations != 0 [L12930] tmp___0 = __VERIFIER_nondet_int() [L12932] case 0: [L12945] case 1: [L12953] case 2: VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, tmp___0=2, tmp___1=-3, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12954] FCALL ldv_handler_precall() VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, tmp___0=2, tmp___1=-3, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12955] CALL vhost_scsi_ioctl(var_group2, var_vhost_scsi_ioctl_44_p1, var_vhost_scsi_ioctl_44_p2) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12095] struct vhost_scsi *vs ; [L12096] struct vhost_scsi_target backend ; [L12097] void *argp ; [L12098] u64 *featurep ; [L12099] u64 features ; [L12100] int r ; [L12101] int abi_version ; [L12102] unsigned long tmp ; [L12103] int tmp___0 ; [L12104] unsigned long tmp___1 ; [L12105] int tmp___2 ; [L12106] int tmp___3 ; [L12107] int tmp___4 ; [L12108] unsigned long tmp___5 ; [L12109] int tmp___6 ; [L12110] long tmp___7 ; [L12112] EXPR f->private_data [L12112] vs = (struct vhost_scsi *)f->private_data [L12113] argp = (void *)arg [L12114] featurep = (u64 *)argp [L12115] abi_version = 0 [L12117] case 1088991040U: [L12129] case 1088991041U: [L12141] case 1074048834U: [L12148] case 2148052736U: [L12156] case 1074310912U: [L12164] default: [L12165] CALL ldv_mutex_lock_44(& vs->dev.mutex) [L13467] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103236:392}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14037] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103236:392}, lock={36893488147419103236:392}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14041] ldv_mutex_mutex = 2 [L13467] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, ldv_func_arg1={36893488147419103236:392}, ldv_func_arg1={36893488147419103236:392}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13468] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, ldv_func_arg1={36893488147419103236:392}, ldv_func_arg1={36893488147419103236:392}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12165] RET ldv_mutex_lock_44(& vs->dev.mutex) [L12166] CALL vhost_dev_ioctl(& vs->dev, ioctl, arg) [L8943] void *argp ; [L8944] struct file *eventfp ; [L8945] struct file *filep ; [L8946] struct eventfd_ctx *ctx ; [L8947] u64 p ; [L8948] long r ; [L8949] int i ; [L8950] int fd ; [L8951] unsigned long tmp ; [L8952] struct vhost_virtqueue *vq ; [L8953] void *base ; [L8954] int tmp___0 ; [L8955] int __ret_gu ; [L8956] unsigned long __val_gu ; [L8957] struct file *tmp___1 ; [L8958] long tmp___2 ; [L8959] struct eventfd_ctx *tmp___3 ; [L8961] argp = (void *)arg [L8962] filep = 0 [L8963] ctx = 0 VAL [\old(arg)=9223372036854775808, \old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, arg=9223372036854775808, argp={0:-9223372036854775808}, ctx={0:0}, d={36893488147419103236:376}, d={36893488147419103236:376}, filep={0:0}, ioctl=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, p={18446744073709547531:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8964] COND FALSE !(ioctl == 44801U) [L8969] CALL, EXPR vhost_dev_check_owner(d) [L8126] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, dev={36893488147419103236:376}, dev={36893488147419103236:376}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8128] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6751] struct task_struct *pfo_ret__ ; [L6754] case 1UL: [L6757] case 2UL: [L6760] case 4UL: [L6763] case 8UL: [L6770] return (pfo_ret__); [L8128] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, dev={36893488147419103236:376}, dev={36893488147419103236:376}, get_current()={36893488147419103249:-5}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8128] tmp = get_current() [L8129] EXPR dev->mm [L8129] EXPR tmp->mm [L8129] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L [L8129] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L8969] RET, EXPR vhost_dev_check_owner(d) [L8969] r = vhost_dev_check_owner(d) [L8970] COND FALSE !(r != 0L) [L8975] case 1074310915U: [L8978] case 1074310916U: [L9009] case 1074048775U: [L9080] default: [L9081] CALL vhost_set_vring(d, (int )ioctl, argp) [L8658] struct file *eventfp ; [L8659] struct file *filep ; [L8660] bool pollstart ; [L8661] bool pollstop ; [L8662] struct eventfd_ctx *ctx ; [L8663] u32 *idxp ; [L8664] struct vhost_virtqueue *vq ; [L8665] struct vhost_vring_state s ; [L8666] struct vhost_vring_file f ; [L8667] struct vhost_vring_addr a ; [L8668] u32 idx ; [L8669] long r ; [L8670] int __ret_gu ; [L8671] unsigned long __val_gu ; [L8672] unsigned long tmp ; [L8673] unsigned long tmp___0 ; [L8674] int tmp___1 ; [L8675] unsigned long tmp___2 ; [L8676] int tmp___3 ; [L8677] int tmp___4 ; [L8678] unsigned long tmp___5 ; [L8679] struct file *tmp___6 ; [L8680] long tmp___7 ; [L8681] struct file *tmp___8 ; [L8682] unsigned long tmp___9 ; [L8683] struct file *tmp___10 ; [L8684] long tmp___11 ; [L8685] struct eventfd_ctx *tmp___12 ; [L8686] unsigned long tmp___13 ; [L8687] struct file *tmp___14 ; [L8688] long tmp___15 ; [L8689] struct eventfd_ctx *tmp___16 ; [L8691] filep = 0 [L8692] pollstart = 0 [L8693] pollstop = 0 [L8694] ctx = 0 [L8695] idxp = (u32 *)argp VAL [\old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, a={18446744073709547524:0}, argp={0:-9223372036854775808}, argp={0:-9223372036854775808}, ctx={0:0}, d={36893488147419103236:376}, d={36893488147419103236:376}, f={18446744073709547533:0}, filep={0:0}, idxp={0:-9223372036854775808}, ioctl=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, s={18446744073709547532:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8696] FCALL might_fault() VAL [\old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, a={18446744073709547524:0}, argp={0:-9223372036854775808}, argp={0:-9223372036854775808}, ctx={0:0}, d={36893488147419103236:376}, d={36893488147419103236:376}, f={18446744073709547533:0}, filep={0:0}, idxp={0:-9223372036854775808}, ioctl=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, s={18446744073709547532:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8698] case 1UL: [L8701] case 2UL: [L8704] case 4UL: [L8715] idx = (unsigned int )__val_gu [L8716] r = (long )__ret_gu VAL [\old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __ret_gu=366, __this_module={36893488147419103284:36893488147419103246}, __val_gu=369, a={18446744073709547524:0}, argp={0:-9223372036854775808}, argp={0:-9223372036854775808}, ctx={0:0}, d={36893488147419103236:376}, d={36893488147419103236:376}, f={18446744073709547533:0}, filep={0:0}, idx=369, idxp={0:-9223372036854775808}, ioctl=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, r=366, s={18446744073709547532:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8717] COND FALSE !(r < 0L) [L8721] EXPR d->nvqs VAL [\old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __ret_gu=366, __this_module={36893488147419103284:36893488147419103246}, __val_gu=369, a={18446744073709547524:0}, argp={0:-9223372036854775808}, argp={0:-9223372036854775808}, ctx={0:0}, d={36893488147419103236:376}, d={36893488147419103236:376}, d->nvqs=4294967666, f={18446744073709547533:0}, filep={0:0}, idx=369, idxp={0:-9223372036854775808}, ioctl=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, r=366, s={18446744073709547532:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8721] COND FALSE !((u32 )d->nvqs <= idx) [L8725] EXPR d->vqs [L8725] vq = d->vqs + (unsigned long )idx [L8726] CALL ldv_mutex_lock_14(& vq->mutex) [L13227] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103262:6317658}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14037] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103262:6317658}, lock={36893488147419103262:6317658}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14039] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13668] reach_error() VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 115 procedures, 1963 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 148.2s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 116.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 36 mSolverCounterUnknown, 32927 SdHoareTripleChecker+Valid, 107.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32706 mSDsluCounter, 119405 SdHoareTripleChecker+Invalid, 102.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78208 mSDsCounter, 426 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14864 IncrementalHoareTripleChecker+Invalid, 15326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 426 mSolverCounterUnsat, 49076 mSDtfsCounter, 14864 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13643occurred in iteration=8, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 6638 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 9.7s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 664 ConstructedInterpolants, 0 QuantifiedInterpolants, 1364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 36/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 23:38:27,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:38:30,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:38:30,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:38:30,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:38:30,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:38:30,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:38:30,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:38:30,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:38:30,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:38:30,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:38:30,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:38:30,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:38:30,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:38:30,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:38:30,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:38:30,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:38:30,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:38:30,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:38:30,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:38:30,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:38:30,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:38:30,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:38:30,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:38:30,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:38:30,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:38:30,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:38:30,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:38:30,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:38:30,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:38:30,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:38:30,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:38:30,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:38:30,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:38:30,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:38:30,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:38:30,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:38:30,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:38:30,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:38:30,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:38:30,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:38:30,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:38:30,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-20 23:38:30,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:38:30,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:38:30,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:38:30,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:38:30,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:38:30,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:38:30,243 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:38:30,244 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:38:30,244 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:38:30,244 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:38:30,245 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:38:30,245 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:38:30,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:38:30,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:38:30,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:38:30,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:38:30,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:38:30,248 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:38:30,248 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:38:30,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:38:30,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:38:30,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:38:30,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:38:30,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:38:30,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:38:30,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:38:30,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:38:30,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:38:30,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:38:30,251 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:38:30,251 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:38:30,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:38:30,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:38:30,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:38:30,252 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-11-20 23:38:30,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:38:30,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:38:30,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:38:30,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:38:30,675 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:38:30,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-20 23:38:30,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/data/6f2656900/d02d331569454975a977163bf5064d4c/FLAG5dcf27029 [2021-11-20 23:38:31,913 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:38:31,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-20 23:38:31,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/data/6f2656900/d02d331569454975a977163bf5064d4c/FLAG5dcf27029 [2021-11-20 23:38:32,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/data/6f2656900/d02d331569454975a977163bf5064d4c [2021-11-20 23:38:32,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:38:32,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:38:32,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:38:32,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:38:32,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:38:32,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:32" (1/1) ... [2021-11-20 23:38:32,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257ba568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:32, skipping insertion in model container [2021-11-20 23:38:32,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:32" (1/1) ... [2021-11-20 23:38:32,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:38:32,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:38:36,121 WARN L230 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_65185c7e-3b6c-4246-a1ea-c793f713cb79/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-20 23:38:36,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:38:36,351 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:38:36,981 WARN L230 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_65185c7e-3b6c-4246-a1ea-c793f713cb79/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-20 23:38:36,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:38:37,175 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:38:37,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37 WrapperNode [2021-11-20 23:38:37,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:38:37,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:38:37,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:38:37,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:38:37,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (1/1) ... [2021-11-20 23:38:37,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (1/1) ... [2021-11-20 23:38:37,612 INFO L137 Inliner]: procedures = 460, calls = 3477, calls flagged for inlining = 227, calls inlined = 194, statements flattened = 7521 [2021-11-20 23:38:37,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:38:37,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:38:37,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:38:37,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:38:37,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (1/1) ... [2021-11-20 23:38:37,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (1/1) ... [2021-11-20 23:38:37,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (1/1) ... [2021-11-20 23:38:37,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (1/1) ... [2021-11-20 23:38:37,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (1/1) ... [2021-11-20 23:38:37,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (1/1) ... [2021-11-20 23:38:37,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (1/1) ... [2021-11-20 23:38:38,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:38:38,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:38:38,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:38:38,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:38:38,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (1/1) ... [2021-11-20 23:38:38,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:38:38,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:38:38,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:38:38,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:38:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-20 23:38:38,151 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-20 23:38:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-20 23:38:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-20 23:38:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-20 23:38:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-20 23:38:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:38:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:38:38,153 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-20 23:38:38,153 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_fabric_acl [2021-11-20 23:38:38,153 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_fabric_acl [2021-11-20 23:38:38,153 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:38:38,153 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:38:38,153 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_access_ok [2021-11-20 23:38:38,154 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_access_ok [2021-11-20 23:38:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_close_session [2021-11-20 23:38:38,154 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_close_session [2021-11-20 23:38:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-20 23:38:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-20 23:38:38,154 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-20 23:38:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:38:38,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-20 23:38:38,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:38:38,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-20 23:38:38,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-20 23:38:38,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-20 23:38:38,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-20 23:38:38,156 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-20 23:38:38,156 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-20 23:38:38,156 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:38:38,156 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:38:38,156 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-20 23:38:38,156 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-20 23:38:38,156 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-20 23:38:38,157 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-20 23:38:38,157 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tpg [2021-11-20 23:38:38,157 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tpg [2021-11-20 23:38:38,157 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-20 23:38:38,157 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-20 23:38:38,157 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-20 23:38:38,158 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-20 23:38:38,158 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-20 23:38:38,158 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-20 23:38:38,158 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-20 23:38:38,158 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-20 23:38:38,158 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-11-20 23:38:38,159 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-11-20 23:38:38,159 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 23:38:38,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 23:38:38,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:38:38,159 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:38:38,159 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-20 23:38:38,159 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-20 23:38:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-20 23:38:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 23:38:38,160 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 23:38:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_complete_cmd [2021-11-20 23:38:38,160 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_complete_cmd [2021-11-20 23:38:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-20 23:38:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-20 23:38:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-20 23:38:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-20 23:38:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-20 23:38:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-20 23:38:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-20 23:38:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-20 23:38:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-20 23:38:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-20 23:38:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id [2021-11-20 23:38:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id [2021-11-20 23:38:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-20 23:38:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-20 23:38:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:38:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:38:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:38:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 23:38:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-20 23:38:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-20 23:38:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-20 23:38:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-20 23:38:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:38:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:38:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-20 23:38:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-20 23:38:38,165 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-20 23:38:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-20 23:38:38,165 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-20 23:38:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-20 23:38:38,165 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-20 23:38:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:38:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:38:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-20 23:38:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-20 23:38:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-11-20 23:38:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-11-20 23:38:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-20 23:38:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-20 23:38:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-20 23:38:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-20 23:38:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-20 23:38:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-20 23:38:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-20 23:38:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-20 23:38:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_alloc_fabric_acl [2021-11-20 23:38:38,168 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_alloc_fabric_acl [2021-11-20 23:38:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-20 23:38:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-20 23:38:38,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-20 23:38:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_ioctl [2021-11-20 23:38:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_ioctl [2021-11-20 23:38:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-20 23:38:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-20 23:38:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:38:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:38:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tport [2021-11-20 23:38:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tport [2021-11-20 23:38:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-20 23:38:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-20 23:38:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 23:38:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 23:38:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 23:38:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-20 23:38:38,171 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-20 23:38:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-20 23:38:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 23:38:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:38:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-20 23:38:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-20 23:38:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-20 23:38:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:38:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-20 23:38:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-20 23:38:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 23:38:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 23:38:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-20 23:38:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-20 23:38:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-20 23:38:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-20 23:38:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-20 23:38:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-20 23:38:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 23:38:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 23:38:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 23:38:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 23:38:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:38:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:38:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-20 23:38:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-20 23:38:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-20 23:38:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-20 23:38:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-20 23:38:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-20 23:38:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-20 23:38:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-20 23:38:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:38:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:38:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:38:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-20 23:38:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-20 23:38:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:38:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-20 23:38:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-20 23:38:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_cmd [2021-11-20 23:38:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_cmd [2021-11-20 23:38:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_set_default_node_attrs [2021-11-20 23:38:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_set_default_node_attrs [2021-11-20 23:38:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nexus [2021-11-20 23:38:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nexus [2021-11-20 23:38:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-20 23:38:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-20 23:38:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-20 23:38:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 23:38:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:38:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-20 23:38:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-20 23:38:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 23:38:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 23:38:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-20 23:38:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-20 23:38:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-20 23:38:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-20 23:38:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 23:38:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 23:38:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_fabric_proto_ident [2021-11-20 23:38:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_fabric_proto_ident [2021-11-20 23:38:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-20 23:38:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-20 23:38:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-11-20 23:38:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-11-20 23:38:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2021-11-20 23:38:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2021-11-20 23:38:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_deregister [2021-11-20 23:38:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_deregister [2021-11-20 23:38:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 23:38:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 23:38:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-20 23:38:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-20 23:38:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_command_size [2021-11-20 23:38:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_command_size [2021-11-20 23:38:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_dump_proto_id [2021-11-20 23:38:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_dump_proto_id [2021-11-20 23:38:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-20 23:38:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-20 23:38:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:38:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:38:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-20 23:38:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-20 23:38:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-20 23:38:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-20 23:38:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_clear_endpoint [2021-11-20 23:38:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_clear_endpoint [2021-11-20 23:38:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-20 23:38:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-20 23:38:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-20 23:38:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-20 23:38:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-20 23:38:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-20 23:38:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:38:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:38:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_flush_vq [2021-11-20 23:38:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_flush_vq [2021-11-20 23:38:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-20 23:38:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-20 23:38:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-20 23:38:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-20 23:38:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-20 23:38:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-20 23:38:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure sas_parse_pr_out_transport_id [2021-11-20 23:38:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_parse_pr_out_transport_id [2021-11-20 23:38:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-20 23:38:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-20 23:38:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure utsname [2021-11-20 23:38:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure utsname [2021-11-20 23:38:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-20 23:38:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-20 23:38:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-20 23:38:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-20 23:38:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-20 23:38:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-20 23:38:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-20 23:38:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-20 23:38:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used [2021-11-20 23:38:38,189 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used [2021-11-20 23:38:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 23:38:38,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 23:38:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 23:38:38,189 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 23:38:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-20 23:38:38,189 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-20 23:38:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nodeacl [2021-11-20 23:38:38,190 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nodeacl [2021-11-20 23:38:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-20 23:38:38,190 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-20 23:38:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-20 23:38:38,190 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-20 23:38:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id_len [2021-11-20 23:38:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id_len [2021-11-20 23:38:39,188 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:38:39,192 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:39:01,347 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume #t~switch208;#res := ~ret~1; [2021-11-20 23:39:01,347 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !#t~switch208;#t~switch208 := #t~switch208 || 4bv32 == ~size; [2021-11-20 23:39:01,348 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0bv64 != ~tmp___1~4;#res := ~ret~1; [2021-11-20 23:39:01,348 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0bv64 != ~tmp___1~4);#res := ~ret~1; [2021-11-20 23:39:01,348 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc #t~switch208; [2021-11-20 23:39:01,348 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474: SUMMARY for call #t~ret209 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != ~ret~1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-20 23:39:01,348 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume #t~switch208; [2021-11-20 23:39:01,348 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !#t~switch208;#t~switch208 := #t~switch208 || 16bv32 == ~size; [2021-11-20 23:39:01,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474-1: ~tmp___0~9 := #t~ret209;havoc #t~ret209; [2021-11-20 23:39:01,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch208;#res := ~ret~1; [2021-11-20 23:39:01,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-1: ~tmp___2~3 := #t~ret211;havoc #t~ret211;#res := ~tmp___2~3[32:0]; [2021-11-20 23:39:01,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497: SUMMARY for call #t~ret211 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2021-11-20 23:39:01,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch208;#t~switch208 := #t~switch208 || 2bv32 == ~size; [2021-11-20 23:39:01,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume #t~switch208;#res := ~ret~1; [2021-11-20 23:39:01,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !#t~switch208;#t~switch208 := #t~switch208 || 8bv32 == ~size; [2021-11-20 23:39:01,350 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487-1: ~tmp___1~4 := #t~ret210;havoc #t~ret210; [2021-11-20 23:39:01,350 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487: SUMMARY for call #t~ret210 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != ~ret~1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-20 23:39:01,350 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume #t~switch208; [2021-11-20 23:39:01,350 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !#t~switch208;#t~switch208 := true; [2021-11-20 23:39:01,350 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0bv64 != ~tmp___0~9;#res := ~ret~1; [2021-11-20 23:39:01,350 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0bv64 != ~tmp___0~9);#res := ~ret~1; [2021-11-20 23:39:01,350 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume #t~switch208; [2021-11-20 23:39:01,350 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !#t~switch208; [2021-11-20 23:39:01,351 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume #t~switch208;#res := ~ret~1; [2021-11-20 23:39:01,351 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !#t~switch208;#t~switch208 := #t~switch208 || 10bv32 == ~size; [2021-11-20 23:39:13,749 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:39:13,773 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:39:13,774 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:39:13,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:39:13 BoogieIcfgContainer [2021-11-20 23:39:13,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:39:13,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:39:13,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:39:13,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:39:13,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:38:32" (1/3) ... [2021-11-20 23:39:13,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db82b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:39:13, skipping insertion in model container [2021-11-20 23:39:13,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:37" (2/3) ... [2021-11-20 23:39:13,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db82b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:39:13, skipping insertion in model container [2021-11-20 23:39:13,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:39:13" (3/3) ... [2021-11-20 23:39:13,786 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-20 23:39:13,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:39:13,792 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:39:13,859 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:39:13,866 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=FINITE_AUTOMATA, 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 [2021-11-20 23:39:13,866 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:39:13,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 2407 states, 1666 states have (on average 1.3475390156062426) internal successors, (2245), 1716 states have internal predecessors, (2245), 628 states have call successors, (628), 111 states have call predecessors, (628), 111 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) [2021-11-20 23:39:13,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:39:13,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:13,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:13,938 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2087497073, now seen corresponding path program 1 times [2021-11-20 23:39:13,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:13,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188901034] [2021-11-20 23:39:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:13,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:13,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:13,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:14,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:39:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:15,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:39:15,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:15,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:15,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:15,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188901034] [2021-11-20 23:39:15,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188901034] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:15,483 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:15,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:39:15,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310259652] [2021-11-20 23:39:15,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:15,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:15,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:15,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:15,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:15,524 INFO L87 Difference]: Start difference. First operand has 2407 states, 1666 states have (on average 1.3475390156062426) internal successors, (2245), 1716 states have internal predecessors, (2245), 628 states have call successors, (628), 111 states have call predecessors, (628), 111 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:16,021 INFO L93 Difference]: Finished difference Result 4788 states and 7060 transitions. [2021-11-20 23:39:16,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:16,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-20 23:39:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:16,071 INFO L225 Difference]: With dead ends: 4788 [2021-11-20 23:39:16,072 INFO L226 Difference]: Without dead ends: 2391 [2021-11-20 23:39:16,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:16,099 INFO L933 BasicCegarLoop]: 3483 mSDtfsCounter, 3472 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3472 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:16,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3472 Valid, 3483 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:39:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-11-20 23:39:16,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2391. [2021-11-20 23:39:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 1653 states have (on average 1.3424077434966728) internal successors, (2219), 1700 states have internal predecessors, (2219), 627 states have call successors, (627), 111 states have call predecessors, (627), 110 states have return successors, (616), 604 states have call predecessors, (616), 616 states have call successors, (616) [2021-11-20 23:39:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 3462 transitions. [2021-11-20 23:39:16,383 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 3462 transitions. Word has length 15 [2021-11-20 23:39:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:16,385 INFO L470 AbstractCegarLoop]: Abstraction has 2391 states and 3462 transitions. [2021-11-20 23:39:16,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:16,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 3462 transitions. [2021-11-20 23:39:16,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:39:16,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:16,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:16,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:16,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:16,610 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash 286775544, now seen corresponding path program 1 times [2021-11-20 23:39:16,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:16,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193893035] [2021-11-20 23:39:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:16,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:16,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:16,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:16,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:39:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:17,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:39:17,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:17,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:17,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:17,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193893035] [2021-11-20 23:39:17,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193893035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:17,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:17,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:39:17,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50282446] [2021-11-20 23:39:17,972 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:17,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:17,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:17,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:17,975 INFO L87 Difference]: Start difference. First operand 2391 states and 3462 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:18,225 INFO L93 Difference]: Finished difference Result 2393 states and 3463 transitions. [2021-11-20 23:39:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:18,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-20 23:39:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:18,244 INFO L225 Difference]: With dead ends: 2393 [2021-11-20 23:39:18,245 INFO L226 Difference]: Without dead ends: 2390 [2021-11-20 23:39:18,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:18,249 INFO L933 BasicCegarLoop]: 3459 mSDtfsCounter, 3447 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 3459 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:18,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 3459 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:39:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-11-20 23:39:18,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2390. [2021-11-20 23:39:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 1653 states have (on average 1.3418027828191168) internal successors, (2218), 1699 states have internal predecessors, (2218), 626 states have call successors, (626), 111 states have call predecessors, (626), 110 states have return successors, (616), 604 states have call predecessors, (616), 616 states have call successors, (616) [2021-11-20 23:39:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3460 transitions. [2021-11-20 23:39:18,531 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3460 transitions. Word has length 16 [2021-11-20 23:39:18,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:18,532 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 3460 transitions. [2021-11-20 23:39:18,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:18,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3460 transitions. [2021-11-20 23:39:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:39:18,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:18,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:18,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:18,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:18,747 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:18,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash 298987860, now seen corresponding path program 1 times [2021-11-20 23:39:18,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:18,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525542847] [2021-11-20 23:39:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:18,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:18,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:18,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:18,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:39:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:19,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:39:19,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:19,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:20,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:20,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525542847] [2021-11-20 23:39:20,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525542847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:20,068 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:20,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:39:20,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468780542] [2021-11-20 23:39:20,069 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:20,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:20,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:20,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:20,071 INFO L87 Difference]: Start difference. First operand 2390 states and 3460 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:20,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:20,405 INFO L93 Difference]: Finished difference Result 2392 states and 3461 transitions. [2021-11-20 23:39:20,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:20,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-20 23:39:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:20,424 INFO L225 Difference]: With dead ends: 2392 [2021-11-20 23:39:20,425 INFO L226 Difference]: Without dead ends: 2389 [2021-11-20 23:39:20,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:20,430 INFO L933 BasicCegarLoop]: 3457 mSDtfsCounter, 3444 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3444 SdHoareTripleChecker+Valid, 3457 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:20,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3444 Valid, 3457 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:39:20,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-20 23:39:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2389. [2021-11-20 23:39:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 1653 states have (on average 1.3411978221415608) internal successors, (2217), 1698 states have internal predecessors, (2217), 625 states have call successors, (625), 111 states have call predecessors, (625), 110 states have return successors, (616), 604 states have call predecessors, (616), 616 states have call successors, (616) [2021-11-20 23:39:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3458 transitions. [2021-11-20 23:39:20,611 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3458 transitions. Word has length 17 [2021-11-20 23:39:20,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:20,611 INFO L470 AbstractCegarLoop]: Abstraction has 2389 states and 3458 transitions. [2021-11-20 23:39:20,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3458 transitions. [2021-11-20 23:39:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:20,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:20,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:20,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:20,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:20,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:20,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash 677574523, now seen corresponding path program 1 times [2021-11-20 23:39:20,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:20,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860016543] [2021-11-20 23:39:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:20,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:20,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:20,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:20,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:39:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:21,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:39:21,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:21,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:22,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:22,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860016543] [2021-11-20 23:39:22,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860016543] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:22,145 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:22,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:39:22,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96780833] [2021-11-20 23:39:22,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:22,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:22,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:22,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:22,147 INFO L87 Difference]: Start difference. First operand 2389 states and 3458 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:22,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:22,566 INFO L93 Difference]: Finished difference Result 5075 states and 7243 transitions. [2021-11-20 23:39:22,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:22,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-20 23:39:22,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:22,586 INFO L225 Difference]: With dead ends: 5075 [2021-11-20 23:39:22,586 INFO L226 Difference]: Without dead ends: 2730 [2021-11-20 23:39:22,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:22,597 INFO L933 BasicCegarLoop]: 3599 mSDtfsCounter, 1868 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 5549 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:22,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1868 Valid, 5549 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:39:22,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-20 23:39:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2727. [2021-11-20 23:39:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 1879 states have (on average 1.3166577967003725) internal successors, (2474), 1931 states have internal predecessors, (2474), 686 states have call successors, (686), 163 states have call predecessors, (686), 161 states have return successors, (677), 662 states have call predecessors, (677), 675 states have call successors, (677) [2021-11-20 23:39:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3837 transitions. [2021-11-20 23:39:22,797 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3837 transitions. Word has length 18 [2021-11-20 23:39:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:22,798 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 3837 transitions. [2021-11-20 23:39:22,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3837 transitions. [2021-11-20 23:39:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 23:39:22,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:22,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:22,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:23,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:23,029 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:23,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:23,030 INFO L85 PathProgramCache]: Analyzing trace with hash -471135945, now seen corresponding path program 1 times [2021-11-20 23:39:23,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:23,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608019664] [2021-11-20 23:39:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:23,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:23,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:23,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:23,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 23:39:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:23,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:39:23,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:24,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:24,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:24,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608019664] [2021-11-20 23:39:24,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608019664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:24,274 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:24,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:39:24,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140820359] [2021-11-20 23:39:24,275 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:24,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:24,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:24,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:24,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:24,277 INFO L87 Difference]: Start difference. First operand 2727 states and 3837 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:24,558 INFO L93 Difference]: Finished difference Result 2756 states and 3860 transitions. [2021-11-20 23:39:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:24,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-20 23:39:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:24,578 INFO L225 Difference]: With dead ends: 2756 [2021-11-20 23:39:24,578 INFO L226 Difference]: Without dead ends: 2752 [2021-11-20 23:39:24,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:24,581 INFO L933 BasicCegarLoop]: 3452 mSDtfsCounter, 3370 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3370 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:24,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3370 Valid, 3536 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:39:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-11-20 23:39:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2748. [2021-11-20 23:39:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 1896 states have (on average 1.3138185654008439) internal successors, (2491), 1946 states have internal predecessors, (2491), 684 states have call successors, (684), 169 states have call predecessors, (684), 167 states have return successors, (677), 662 states have call predecessors, (677), 675 states have call successors, (677) [2021-11-20 23:39:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3852 transitions. [2021-11-20 23:39:24,764 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3852 transitions. Word has length 19 [2021-11-20 23:39:24,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:24,764 INFO L470 AbstractCegarLoop]: Abstraction has 2748 states and 3852 transitions. [2021-11-20 23:39:24,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3852 transitions. [2021-11-20 23:39:24,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:39:24,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:24,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:24,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:24,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:24,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:24,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:24,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1721417218, now seen corresponding path program 1 times [2021-11-20 23:39:24,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:24,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252001627] [2021-11-20 23:39:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:24,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:24,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:24,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:25,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 23:39:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:25,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:39:25,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:26,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:26,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:26,270 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:26,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252001627] [2021-11-20 23:39:26,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252001627] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:26,271 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:26,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:39:26,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730944449] [2021-11-20 23:39:26,271 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:26,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:26,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:26,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:26,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:26,272 INFO L87 Difference]: Start difference. First operand 2748 states and 3852 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:26,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:26,565 INFO L93 Difference]: Finished difference Result 2767 states and 3870 transitions. [2021-11-20 23:39:26,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:26,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-20 23:39:26,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:26,587 INFO L225 Difference]: With dead ends: 2767 [2021-11-20 23:39:26,587 INFO L226 Difference]: Without dead ends: 2743 [2021-11-20 23:39:26,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:26,590 INFO L933 BasicCegarLoop]: 3450 mSDtfsCounter, 3366 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:26,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3366 Valid, 3528 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:39:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2021-11-20 23:39:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 2741. [2021-11-20 23:39:26,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1892 states have (on average 1.3128964059196617) internal successors, (2484), 1940 states have internal predecessors, (2484), 678 states have call successors, (678), 172 states have call predecessors, (678), 170 states have return successors, (673), 658 states have call predecessors, (673), 671 states have call successors, (673) [2021-11-20 23:39:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3835 transitions. [2021-11-20 23:39:26,805 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3835 transitions. Word has length 20 [2021-11-20 23:39:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:26,806 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3835 transitions. [2021-11-20 23:39:26,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:39:26,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3835 transitions. [2021-11-20 23:39:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 23:39:26,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:26,820 INFO L514 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] [2021-11-20 23:39:26,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:27,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:27,034 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1767891636, now seen corresponding path program 1 times [2021-11-20 23:39:27,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:27,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751576162] [2021-11-20 23:39:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:27,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:27,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:27,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:27,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 23:39:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:27,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:39:27,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:28,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:39:29,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:29,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751576162] [2021-11-20 23:39:29,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751576162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:29,016 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:29,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 23:39:29,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174123223] [2021-11-20 23:39:29,016 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:29,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:39:29,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:29,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:39:29,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:39:29,017 INFO L87 Difference]: Start difference. First operand 2741 states and 3835 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:39:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:29,877 INFO L93 Difference]: Finished difference Result 5433 states and 7607 transitions. [2021-11-20 23:39:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:39:29,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2021-11-20 23:39:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:29,897 INFO L225 Difference]: With dead ends: 5433 [2021-11-20 23:39:29,898 INFO L226 Difference]: Without dead ends: 2730 [2021-11-20 23:39:29,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:39:29,908 INFO L933 BasicCegarLoop]: 3418 mSDtfsCounter, 10 mSDsluCounter, 13644 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17062 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:29,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 17062 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:39:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-20 23:39:30,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2730. [2021-11-20 23:39:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 1885 states have (on average 1.3124668435013263) internal successors, (2474), 1932 states have internal predecessors, (2474), 676 states have call successors, (676), 170 states have call predecessors, (676), 168 states have return successors, (671), 656 states have call predecessors, (671), 669 states have call successors, (671) [2021-11-20 23:39:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3821 transitions. [2021-11-20 23:39:30,093 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3821 transitions. Word has length 53 [2021-11-20 23:39:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:30,093 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3821 transitions. [2021-11-20 23:39:30,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:39:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3821 transitions. [2021-11-20 23:39:30,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:39:30,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:30,098 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 23:39:30,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:30,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:30,321 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:30,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:30,321 INFO L85 PathProgramCache]: Analyzing trace with hash 815157862, now seen corresponding path program 1 times [2021-11-20 23:39:30,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:30,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733780879] [2021-11-20 23:39:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:30,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:30,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:30,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:30,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 23:39:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:31,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:39:31,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 23:39:31,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 23:39:32,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:32,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733780879] [2021-11-20 23:39:32,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733780879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:32,300 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:32,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 23:39:32,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297100546] [2021-11-20 23:39:32,300 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:32,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:39:32,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:32,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:39:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:39:32,302 INFO L87 Difference]: Start difference. First operand 2730 states and 3821 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 23:39:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:33,146 INFO L93 Difference]: Finished difference Result 5421 states and 7592 transitions. [2021-11-20 23:39:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:39:33,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 81 [2021-11-20 23:39:33,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:33,168 INFO L225 Difference]: With dead ends: 5421 [2021-11-20 23:39:33,168 INFO L226 Difference]: Without dead ends: 2730 [2021-11-20 23:39:33,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:33,181 INFO L933 BasicCegarLoop]: 3405 mSDtfsCounter, 3 mSDsluCounter, 6800 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10205 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:33,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 10205 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:39:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-20 23:39:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2730. [2021-11-20 23:39:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 1885 states have (on average 1.3119363395225465) internal successors, (2473), 1932 states have internal predecessors, (2473), 676 states have call successors, (676), 170 states have call predecessors, (676), 168 states have return successors, (671), 656 states have call predecessors, (671), 669 states have call successors, (671) [2021-11-20 23:39:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3820 transitions. [2021-11-20 23:39:33,412 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3820 transitions. Word has length 81 [2021-11-20 23:39:33,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:33,413 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3820 transitions. [2021-11-20 23:39:33,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 23:39:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3820 transitions. [2021-11-20 23:39:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 23:39:33,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:33,418 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 23:39:33,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:33,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:33,642 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1123746407, now seen corresponding path program 1 times [2021-11-20 23:39:33,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:39:33,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053793352] [2021-11-20 23:39:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:33,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:39:33,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:39:33,647 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:39:33,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 23:39:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:34,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 23:39:34,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:39:36,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:39:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 23:39:41,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:41,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053793352] [2021-11-20 23:39:41,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053793352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:41,468 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:41,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-11-20 23:39:41,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407529129] [2021-11-20 23:39:41,469 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:41,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:39:41,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:39:41,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:39:41,470 INFO L87 Difference]: Start difference. First operand 2730 states and 3820 transitions. Second operand has 20 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 6 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-20 23:39:47,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:49,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:12,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:12,624 INFO L93 Difference]: Finished difference Result 5769 states and 8139 transitions. [2021-11-20 23:40:12,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:40:12,625 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 6 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 87 [2021-11-20 23:40:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:12,652 INFO L225 Difference]: With dead ends: 5769 [2021-11-20 23:40:12,652 INFO L226 Difference]: Without dead ends: 3073 [2021-11-20 23:40:12,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:40:12,665 INFO L933 BasicCegarLoop]: 3726 mSDtfsCounter, 309 mSDsluCounter, 47799 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 51525 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:12,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 51525 Invalid, 2036 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12 Valid, 2022 Invalid, 2 Unknown, 0 Unchecked, 29.4s Time] [2021-11-20 23:40:12,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2021-11-20 23:40:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2737. [2021-11-20 23:40:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 1890 states have (on average 1.3111111111111111) internal successors, (2478), 1937 states have internal predecessors, (2478), 677 states have call successors, (677), 170 states have call predecessors, (677), 169 states have return successors, (678), 658 states have call predecessors, (678), 670 states have call successors, (678) [2021-11-20 23:40:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 3833 transitions. [2021-11-20 23:40:12,880 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 3833 transitions. Word has length 87 [2021-11-20 23:40:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:12,880 INFO L470 AbstractCegarLoop]: Abstraction has 2737 states and 3833 transitions. [2021-11-20 23:40:12,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 6 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-20 23:40:12,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 3833 transitions. [2021-11-20 23:40:12,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 23:40:12,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:12,884 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 23:40:12,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:13,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:13,106 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:40:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1429527131, now seen corresponding path program 1 times [2021-11-20 23:40:13,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:13,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329866901] [2021-11-20 23:40:13,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:13,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:13,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:13,110 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:13,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 23:40:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:14,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-20 23:40:14,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:40:20,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 23:40:28,919 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:28,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329866901] [2021-11-20 23:40:28,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329866901] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:28,919 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:28,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 13] imperfect sequences [] total 31 [2021-11-20 23:40:28,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215761290] [2021-11-20 23:40:28,920 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:28,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 23:40:28,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:28,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 23:40:28,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2021-11-20 23:40:28,921 INFO L87 Difference]: Start difference. First operand 2737 states and 3833 transitions. Second operand has 31 states, 26 states have (on average 3.5) internal successors, (91), 24 states have internal predecessors, (91), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-20 23:40:38,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:06,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:06,661 INFO L93 Difference]: Finished difference Result 5432 states and 7615 transitions. [2021-11-20 23:41:06,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 23:41:06,662 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 3.5) internal successors, (91), 24 states have internal predecessors, (91), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) Word has length 87 [2021-11-20 23:41:06,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:06,710 INFO L225 Difference]: With dead ends: 5432 [2021-11-20 23:41:06,710 INFO L226 Difference]: Without dead ends: 2734 [2021-11-20 23:41:06,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:41:06,724 INFO L933 BasicCegarLoop]: 3278 mSDtfsCounter, 16 mSDsluCounter, 68654 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 71932 SdHoareTripleChecker+Invalid, 3114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:06,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 71932 Invalid, 3114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 2959 Invalid, 1 Unknown, 138 Unchecked, 31.4s Time] [2021-11-20 23:41:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-11-20 23:41:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2725. [2021-11-20 23:41:06,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 1882 states have (on average 1.311902231668438) internal successors, (2469), 1929 states have internal predecessors, (2469), 675 states have call successors, (675), 169 states have call predecessors, (675), 167 states have return successors, (670), 655 states have call predecessors, (670), 668 states have call successors, (670) [2021-11-20 23:41:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 3814 transitions. [2021-11-20 23:41:06,972 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 3814 transitions. Word has length 87 [2021-11-20 23:41:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:06,973 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 3814 transitions. [2021-11-20 23:41:06,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 3.5) internal successors, (91), 24 states have internal predecessors, (91), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-20 23:41:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 3814 transitions. [2021-11-20 23:41:06,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-20 23:41:06,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:06,982 INFO L514 BasicCegarLoop]: trace histogram [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, 1] [2021-11-20 23:41:07,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 23:41:07,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:41:07,207 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:41:07,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash 239581160, now seen corresponding path program 1 times [2021-11-20 23:41:07,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:41:07,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417259956] [2021-11-20 23:41:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:07,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:41:07,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:41:07,210 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:41:07,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 23:41:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:08,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:41:08,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:41:08,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 23:41:08,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:41:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 23:41:09,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:41:09,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417259956] [2021-11-20 23:41:09,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417259956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:09,225 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:09,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:41:09,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147281748] [2021-11-20 23:41:09,225 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:09,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:41:09,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:41:09,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:41:09,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:41:09,227 INFO L87 Difference]: Start difference. First operand 2725 states and 3814 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-20 23:41:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:09,491 INFO L93 Difference]: Finished difference Result 3012 states and 4136 transitions. [2021-11-20 23:41:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:41:09,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2021-11-20 23:41:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:09,504 INFO L225 Difference]: With dead ends: 3012 [2021-11-20 23:41:09,504 INFO L226 Difference]: Without dead ends: 2518 [2021-11-20 23:41:09,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:41:09,508 INFO L933 BasicCegarLoop]: 3428 mSDtfsCounter, 1710 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 5149 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:09,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 5149 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:41:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-20 23:41:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2021-11-20 23:41:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 1737 states have (on average 1.3005181347150259) internal successors, (2259), 1776 states have internal predecessors, (2259), 616 states have call successors, (616), 164 states have call predecessors, (616), 162 states have return successors, (609), 597 states have call predecessors, (609), 609 states have call successors, (609) [2021-11-20 23:41:09,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3484 transitions. [2021-11-20 23:41:09,669 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3484 transitions. Word has length 88 [2021-11-20 23:41:09,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:09,670 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3484 transitions. [2021-11-20 23:41:09,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-20 23:41:09,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3484 transitions. [2021-11-20 23:41:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-20 23:41:09,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:09,676 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 23:41:09,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:41:09,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:41:09,894 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:41:09,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1012007465, now seen corresponding path program 1 times [2021-11-20 23:41:09,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:41:09,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972558489] [2021-11-20 23:41:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:09,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:41:09,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:41:09,898 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:41:09,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 23:41:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:11,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:41:11,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:41:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 23:41:11,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:41:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 23:41:12,062 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:41:12,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972558489] [2021-11-20 23:41:12,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972558489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:12,062 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:12,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:41:12,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354477338] [2021-11-20 23:41:12,063 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:12,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:41:12,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:41:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:41:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:41:12,064 INFO L87 Difference]: Start difference. First operand 2516 states and 3484 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 23:41:12,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:12,245 INFO L93 Difference]: Finished difference Result 5021 states and 6977 transitions. [2021-11-20 23:41:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:41:12,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2021-11-20 23:41:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:12,257 INFO L225 Difference]: With dead ends: 5021 [2021-11-20 23:41:12,258 INFO L226 Difference]: Without dead ends: 2518 [2021-11-20 23:41:12,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:41:12,268 INFO L933 BasicCegarLoop]: 3155 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6303 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:12,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6303 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:41:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-20 23:41:12,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2021-11-20 23:41:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 1737 states have (on average 1.2970639032815199) internal successors, (2253), 1776 states have internal predecessors, (2253), 616 states have call successors, (616), 164 states have call predecessors, (616), 162 states have return successors, (609), 597 states have call predecessors, (609), 609 states have call successors, (609) [2021-11-20 23:41:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3478 transitions. [2021-11-20 23:41:12,429 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3478 transitions. Word has length 106 [2021-11-20 23:41:12,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:12,430 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3478 transitions. [2021-11-20 23:41:12,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 23:41:12,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3478 transitions. [2021-11-20 23:41:12,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-20 23:41:12,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:12,437 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1] [2021-11-20 23:41:12,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 23:41:12,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:41:12,650 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:41:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1437319688, now seen corresponding path program 1 times [2021-11-20 23:41:12,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:41:12,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182245436] [2021-11-20 23:41:12,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:12,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:41:12,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:41:12,653 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:41:12,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 23:44:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:44:26,093 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:46:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:46:58,599 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-20 23:46:58,599 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:46:58,601 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:46:58,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 23:46:58,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:46:58,829 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:46:58,832 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:46:59,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:46:59 BoogieIcfgContainer [2021-11-20 23:46:59,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:46:59,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:46:59,127 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:46:59,128 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:46:59,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:39:13" (3/4) ... [2021-11-20 23:46:59,132 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 23:46:59,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:46:59,133 INFO L158 Benchmark]: Toolchain (without parser) took 506948.74ms. Allocated memory was 56.6MB in the beginning and 658.5MB in the end (delta: 601.9MB). Free memory was 29.0MB in the beginning and 497.7MB in the end (delta: -468.7MB). Peak memory consumption was 134.3MB. Max. memory is 16.1GB. [2021-11-20 23:46:59,133 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 37.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:46:59,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4990.91ms. Allocated memory was 56.6MB in the beginning and 169.9MB in the end (delta: 113.2MB). Free memory was 28.8MB in the beginning and 71.3MB in the end (delta: -42.4MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. [2021-11-20 23:46:59,135 INFO L158 Benchmark]: Boogie Procedure Inliner took 439.07ms. Allocated memory was 169.9MB in the beginning and 283.1MB in the end (delta: 113.2MB). Free memory was 71.3MB in the beginning and 179.2MB in the end (delta: -107.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2021-11-20 23:46:59,136 INFO L158 Benchmark]: Boogie Preprocessor took 440.47ms. Allocated memory is still 283.1MB. Free memory was 179.2MB in the beginning and 176.4MB in the end (delta: 2.8MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. [2021-11-20 23:46:59,137 INFO L158 Benchmark]: RCFGBuilder took 35720.19ms. Allocated memory was 283.1MB in the beginning and 547.4MB in the end (delta: 264.2MB). Free memory was 176.4MB in the beginning and 133.5MB in the end (delta: 42.9MB). Peak memory consumption was 321.8MB. Max. memory is 16.1GB. [2021-11-20 23:46:59,137 INFO L158 Benchmark]: TraceAbstraction took 465345.75ms. Allocated memory was 547.4MB in the beginning and 658.5MB in the end (delta: 111.1MB). Free memory was 133.5MB in the beginning and 498.7MB in the end (delta: -365.2MB). Peak memory consumption was 131.8MB. Max. memory is 16.1GB. [2021-11-20 23:46:59,138 INFO L158 Benchmark]: Witness Printer took 5.84ms. Allocated memory is still 658.5MB. Free memory was 498.7MB in the beginning and 497.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:46:59,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 37.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4990.91ms. Allocated memory was 56.6MB in the beginning and 169.9MB in the end (delta: 113.2MB). Free memory was 28.8MB in the beginning and 71.3MB in the end (delta: -42.4MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 439.07ms. Allocated memory was 169.9MB in the beginning and 283.1MB in the end (delta: 113.2MB). Free memory was 71.3MB in the beginning and 179.2MB in the end (delta: -107.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 440.47ms. Allocated memory is still 283.1MB. Free memory was 179.2MB in the beginning and 176.4MB in the end (delta: 2.8MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. * RCFGBuilder took 35720.19ms. Allocated memory was 283.1MB in the beginning and 547.4MB in the end (delta: 264.2MB). Free memory was 176.4MB in the beginning and 133.5MB in the end (delta: 42.9MB). Peak memory consumption was 321.8MB. Max. memory is 16.1GB. * TraceAbstraction took 465345.75ms. Allocated memory was 547.4MB in the beginning and 658.5MB in the end (delta: 111.1MB). Free memory was 133.5MB in the beginning and 498.7MB in the end (delta: -365.2MB). Peak memory consumption was 131.8MB. Max. memory is 16.1GB. * Witness Printer took 5.84ms. Allocated memory is still 658.5MB. Free memory was 498.7MB in the beginning and 497.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13668]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of __builtin_object_size at line 7404, overapproximation of large string literal at line 12845. Possible FailurePath: [L7687] static unsigned int vhost_zcopy_mask ; [L10792] static struct target_fabric_configfs *tcm_vhost_fabric_configfs ; [L10793] static struct workqueue_struct *tcm_vhost_workqueue ; [L10794-L10797] static struct mutex tcm_vhost_mutex = {{1}, {{{{{0U}}, 3735899821U, 4294967295U, 0xffffffffffffffffUL, {0, {0, 0}, "tcm_vhost_mutex.wait_lock", 0, 0UL}}}}, {& tcm_vhost_mutex.wait_list, & tcm_vhost_mutex.wait_list}, 0, 0, (void *)(& tcm_vhost_mutex), {0, {0, 0}, "tcm_vhost_mutex", 0, 0UL}}; [L10798] static struct list_head tcm_vhost_list = {& tcm_vhost_list, & tcm_vhost_list}; [L12183-L12186] static struct file_operations const vhost_scsi_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_scsi_ioctl, & vhost_scsi_compat_ioctl, 0, & vhost_scsi_open, 0, & vhost_scsi_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L12187-L12188] static struct miscdevice vhost_scsi_misc = {255, "vhost-scsi", & vhost_scsi_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L12540] static struct target_fabric_tpg_attribute tcm_vhost_tpg_nexus = {{"nexus", & __this_module, 420U}, & tcm_vhost_tpg_show_nexus, & tcm_vhost_tpg_store_nexus}; [L12541] static struct configfs_attribute *tcm_vhost_tpg_attrs[2U] = { & tcm_vhost_tpg_nexus.attr, 0}; [L12732] static struct target_fabric_wwn_attribute tcm_vhost_wwn_version = {{"version", & __this_module, 292U}, & tcm_vhost_wwn_show_attr_version, 0}; [L12733] static struct configfs_attribute *tcm_vhost_wwn_attrs[2U] = { & tcm_vhost_wwn_version.attr, 0}; [L12734-L12745] static struct target_core_fabric_ops tcm_vhost_ops = {0, & tcm_vhost_get_fabric_name, & tcm_vhost_get_fabric_proto_ident, & tcm_vhost_get_fabric_wwn, & tcm_vhost_get_tag, & tcm_vhost_get_default_depth, & tcm_vhost_get_pr_transport_id, & tcm_vhost_get_pr_transport_id_len, & tcm_vhost_parse_pr_out_transport_id, & tcm_vhost_check_true, & tcm_vhost_check_true, & tcm_vhost_check_false, & tcm_vhost_check_false, 0, & tcm_vhost_alloc_fabric_acl, & tcm_vhost_release_fabric_acl, & tcm_vhost_tpg_get_inst_index, 0, & tcm_vhost_release_cmd, 0, & tcm_vhost_shutdown_session, & tcm_vhost_close_session, & tcm_vhost_sess_get_index, 0, & tcm_vhost_write_pending, & tcm_vhost_write_pending_status, & tcm_vhost_set_default_node_attrs, & tcm_vhost_get_task_tag, & tcm_vhost_get_cmd_state, & tcm_vhost_queue_data_in, & tcm_vhost_queue_status, & tcm_vhost_queue_tm_rsp, & tcm_vhost_make_tport, & tcm_vhost_drop_tport, & tcm_vhost_make_tpg, & tcm_vhost_drop_tpg, & tcm_vhost_port_link, & tcm_vhost_port_unlink, 0, 0, & tcm_vhost_make_nodeacl, & tcm_vhost_drop_nodeacl}; [L12885] int LDV_IN_INTERRUPT ; [L13678] static int ldv_mutex_cred_guard_mutex ; [L13785] static int ldv_mutex_lock ; [L13892] static int ldv_mutex_mtx ; [L13999] static int ldv_mutex_mutex ; [L14106] static int ldv_mutex_tcm_vhost_mutex ; [L14213] static int ldv_mutex_tv_tpg_mutex ; VAL [__this_module={536903680:32768}, LDV_IN_INTERRUPT=0, ldv_mutex_cred_guard_mutex=0, ldv_mutex_lock=0, ldv_mutex_mtx=0, ldv_mutex_mutex=0, ldv_mutex_tcm_vhost_mutex=0, ldv_mutex_tv_tpg_mutex=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:0}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12888] struct inode *var_group1 ; [L12889] struct file *var_group2 ; [L12890] unsigned int var_vhost_scsi_ioctl_44_p1 ; [L12891] unsigned long var_vhost_scsi_ioctl_44_p2 ; [L12892] unsigned int var_vhost_scsi_compat_ioctl_45_p1 ; [L12893] unsigned long var_vhost_scsi_compat_ioctl_45_p2 ; [L12894] int res_vhost_scsi_open_39 ; [L12895] struct se_portal_group *var_group3 ; [L12896] struct se_node_acl *var_group4 ; [L12897] struct t10_pr_registration *var_tcm_vhost_get_pr_transport_id_7_p2 ; [L12898] int *var_tcm_vhost_get_pr_transport_id_7_p3 ; [L12899] unsigned char *var_tcm_vhost_get_pr_transport_id_7_p4 ; [L12900] struct t10_pr_registration *var_tcm_vhost_get_pr_transport_id_len_8_p2 ; [L12901] int *var_tcm_vhost_get_pr_transport_id_len_8_p3 ; [L12902] char const *var_tcm_vhost_parse_pr_out_transport_id_9_p1 ; [L12903] u32 *var_tcm_vhost_parse_pr_out_transport_id_9_p2 ; [L12904] char **var_tcm_vhost_parse_pr_out_transport_id_9_p3 ; [L12905] struct se_cmd *var_group5 ; [L12906] struct se_session *var_group6 ; [L12907] struct target_fabric_configfs *var_group7 ; [L12908] struct config_group *var_group8 ; [L12909] char const *var_tcm_vhost_make_tport_59_p2 ; [L12910] struct se_wwn *var_group9 ; [L12911] char const *var_tcm_vhost_make_tpg_57_p2 ; [L12912] struct se_lun *var_group10 ; [L12913] char const *var_tcm_vhost_make_nodeacl_51_p2 ; [L12914] int ldv_s_vhost_scsi_fops_file_operations ; [L12915] int tmp ; [L12916] int tmp___0 ; [L12917] int tmp___1 ; [L12919] ldv_s_vhost_scsi_fops_file_operations = 0 [L12920] LDV_IN_INTERRUPT = 1 [L12921] CALL ldv_initialize() [L14323] ldv_mutex_cred_guard_mutex = 1 [L14324] ldv_mutex_lock = 1 [L14325] ldv_mutex_mtx = 1 [L14326] ldv_mutex_mutex = 1 [L14327] ldv_mutex_tcm_vhost_mutex = 1 [L14328] ldv_mutex_tv_tpg_mutex = 1 VAL [__this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:0}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12921] RET ldv_initialize() [L12922] FCALL ldv_handler_precall() VAL [__this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:0}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12923] CALL, EXPR tcm_vhost_init() [L12839] int ret ; [L12840] struct lock_class_key __key ; [L12841] char const *__lock_name ; [L12842] struct workqueue_struct *tmp ; [L12844] ret = -12 [L12845] __lock_name = "tcm_vhost" [L12846] tmp = __alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name) [L12847] tcm_vhost_workqueue = tmp VAL [__alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name)={0:-8070450532247928832}, __key={131450:0}, __lock_name={354:0}, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=4294967284, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp={0:-8070450532247928832}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12848] COND FALSE !((unsigned long )tcm_vhost_workqueue == (unsigned long )((struct workqueue_struct *)0)) [L12852] CALL, EXPR vhost_scsi_register() [L12191] int tmp ; [L12193] CALL, EXPR misc_register(& vhost_scsi_misc) [L14561] return __VERIFIER_nondet_int(); [L12193] RET, EXPR misc_register(& vhost_scsi_misc) [L12193] tmp = misc_register(& vhost_scsi_misc) [L12194] return (tmp); VAL [\result=0, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12852] RET, EXPR vhost_scsi_register() [L12852] ret = vhost_scsi_register() [L12853] COND FALSE !(ret < 0) [L12857] CALL, EXPR tcm_vhost_register_configfs() [L12748] struct target_fabric_configfs *fabric ; [L12749] int ret ; [L12750] struct _ddebug descriptor ; [L12751] struct new_utsname *tmp ; [L12752] struct new_utsname *tmp___0 ; [L12753] long tmp___1 ; [L12754] long tmp___2 ; [L12755] long tmp___3 ; [L12756] struct _ddebug descriptor___0 ; [L12757] long tmp___4 ; [L12759] descriptor.modname = "tcm_vhost" [L12760] descriptor.function = "tcm_vhost_register_configfs" [L12761] descriptor.filename = "/work/vladimir/UFO/Work/test/work/current--X--drivers/vhost/tcm_vhost.ko--X--defaultlinux-3.7.3--X--32_7a--X--ufo/linux-3.7.3/csd_deg_dscv/12/dscv_tempdir/dscv/ri/32_7a/drivers/vhost/tcm_vhost.c.prepared" [L12762] descriptor.format = "TCM_VHOST fabric module %s on %s/%s on 3.7.3\n" [L12763] descriptor.lineno = 1561U [L12764] descriptor.flags = 0U [L12765] EXPR descriptor.flags VAL [__this_module={536903680:32768}, descriptor={507:0}, descriptor.flags=0, descriptor___0={-9222246136947933077:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12765] CALL, EXPR ldv__builtin_expect((long )descriptor.flags & 1L, 0L) VAL [\old(c)=0, \old(exp)=0, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13675] return (exp); VAL [\old(c)=0, \old(exp)=0, \result=0, __this_module={536903680:32768}, c=0, exp=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12765] RET, EXPR ldv__builtin_expect((long )descriptor.flags & 1L, 0L) VAL [__this_module={536903680:32768}, descriptor={507:0}, descriptor.flags=0, descriptor___0={-9222246136947933077:0}, ldv__builtin_expect((long )descriptor.flags & 1L, 0L)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12765] tmp___1 = ldv__builtin_expect((long )descriptor.flags & 1L, 0L) [L12766] COND FALSE !(tmp___1 != 0L) VAL [__this_module={536903680:32768}, descriptor={507:0}, descriptor___0={-9222246136947933077:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12773] CALL, EXPR target_fabric_configfs_init(& __this_module, "vhost") [L14636] CALL, EXPR ldv_malloc(sizeof(struct target_fabric_configfs)) VAL [__this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L7220] COND FALSE !(__VERIFIER_nondet_int()) [L7225] return ((void *)0); VAL [\old(size)=1300, \result={0:0}, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, size=1300, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14636] RET, EXPR ldv_malloc(sizeof(struct target_fabric_configfs)) VAL [__this_module={536903680:32768}, arg0={536903680:32768}, arg0={536903680:32768}, arg1={341:0}, arg1={341:0}, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct target_fabric_configfs))={0:0}, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14636] return ldv_malloc(sizeof(struct target_fabric_configfs)); [L12773] RET, EXPR target_fabric_configfs_init(& __this_module, "vhost") [L12773] fabric = target_fabric_configfs_init(& __this_module, "vhost") [L12774] CALL, EXPR IS_ERR((void const *)fabric) VAL [__this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6795] long tmp ; VAL [__this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6797] CALL, EXPR ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) VAL [\old(c)=0, \old(exp)=0, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13675] return (exp); VAL [\old(c)=0, \old(exp)=0, \result=0, __this_module={536903680:32768}, c=0, exp=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6797] RET, EXPR ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) VAL [__this_module={536903680:32768}, ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6797] tmp = ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) [L6798] return (tmp); VAL [\result=0, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12774] RET, EXPR IS_ERR((void const *)fabric) VAL [__this_module={536903680:32768}, descriptor={507:0}, descriptor___0={-9222246136947933077:0}, fabric={0:0}, IS_ERR((void const *)fabric)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12774] tmp___3 = IS_ERR((void const *)fabric) [L12775] COND FALSE !(tmp___3 != 0L) [L12781] fabric->tf_ops = tcm_vhost_ops [L12782] fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = (struct configfs_attribute **)(& tcm_vhost_wwn_attrs) [L12783] fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = (struct configfs_attribute **)(& tcm_vhost_tpg_attrs) [L12784] fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = 0 [L12785] fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = 0 [L12786] fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = 0 [L12787] fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = 0 [L12788] fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = 0 [L12789] fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = 0 [L12790] fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = 0 [L12791] CALL, EXPR target_fabric_configfs_register(fabric) [L14640] return __VERIFIER_nondet_int(); [L12791] RET, EXPR target_fabric_configfs_register(fabric) [L12791] ret = target_fabric_configfs_register(fabric) [L12792] COND FALSE !(ret < 0) [L12797] tcm_vhost_fabric_configfs = fabric [L12798] descriptor___0.modname = "tcm_vhost" [L12799] descriptor___0.function = "tcm_vhost_register_configfs" [L12800] descriptor___0.filename = "/work/vladimir/UFO/Work/test/work/current--X--drivers/vhost/tcm_vhost.ko--X--defaultlinux-3.7.3--X--32_7a--X--ufo/linux-3.7.3/csd_deg_dscv/12/dscv_tempdir/dscv/ri/32_7a/drivers/vhost/tcm_vhost.c.prepared" [L12801] descriptor___0.format = "TCM_VHOST[0] - Set fabric -> tcm_vhost_fabric_configfs\n" [L12802] descriptor___0.lineno = 1599U [L12803] descriptor___0.flags = 0U [L12804] EXPR descriptor___0.flags VAL [__this_module={536903680:32768}, descriptor={507:0}, descriptor___0={-9222246136947933077:0}, descriptor___0.flags=0, fabric={0:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=67108864, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12804] CALL, EXPR ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) VAL [\old(c)=0, \old(exp)=0, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13675] return (exp); VAL [\old(c)=0, \old(exp)=0, \result=0, __this_module={536903680:32768}, c=0, exp=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12804] RET, EXPR ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) VAL [__this_module={536903680:32768}, descriptor={507:0}, descriptor___0={-9222246136947933077:0}, descriptor___0.flags=0, fabric={0:0}, ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=67108864, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12804] tmp___4 = ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) [L12805] COND FALSE !(tmp___4 != 0L) VAL [__this_module={536903680:32768}, descriptor={507:0}, descriptor___0={-9222246136947933077:0}, fabric={0:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=67108864, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, tmp___4=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12809] return (0); [L12809] return (0); [L12809] return (0); VAL [\result=0, __this_module={536903680:32768}, fabric={0:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=67108864, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, tmp___4=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12857] RET, EXPR tcm_vhost_register_configfs() [L12857] ret = tcm_vhost_register_configfs() [L12858] COND FALSE !(ret < 0) [L12862] return (0); [L12862] return (0); VAL [\result=0, __alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name)={0:-8070450532247928832}, __lock_name={354:0}, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp={0:-8070450532247928832}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12923] RET, EXPR tcm_vhost_init() [L12923] tmp = tcm_vhost_init() [L12924] COND FALSE !(tmp != 0) VAL [__this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13102] tmp___1 = __VERIFIER_nondet_int() [L13103] COND TRUE tmp___1 != 0 || ldv_s_vhost_scsi_fops_file_operations != 0 VAL [__this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, tmp___1=2147483648, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12930] tmp___0 = __VERIFIER_nondet_int() [L12932] case 0: [L12945] case 1: [L12953] case 2: VAL [__this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, tmp___0=2, tmp___1=2147483648, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12954] FCALL ldv_handler_precall() VAL [__this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, tmp___0=2, tmp___1=2147483648, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12955] CALL vhost_scsi_ioctl(var_group2, var_vhost_scsi_ioctl_44_p1, var_vhost_scsi_ioctl_44_p2) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12095] struct vhost_scsi *vs ; [L12096] struct vhost_scsi_target backend ; [L12097] void *argp ; [L12098] u64 *featurep ; [L12099] u64 features ; [L12100] int r ; [L12101] int abi_version ; [L12102] unsigned long tmp ; [L12103] int tmp___0 ; [L12104] unsigned long tmp___1 ; [L12105] int tmp___2 ; [L12106] int tmp___3 ; [L12107] int tmp___4 ; [L12108] unsigned long tmp___5 ; [L12109] int tmp___6 ; [L12110] long tmp___7 ; [L12112] EXPR f->private_data [L12112] vs = (struct vhost_scsi *)f->private_data [L12113] argp = (void *)arg [L12114] featurep = (u64 *)argp [L12115] abi_version = 0 [L12117] case 1088991040U: [L12129] case 1088991041U: [L12141] case 1074048834U: [L12148] case 2148052736U: [L12156] case 1074310912U: VAL [\old(arg)=365, \old(ioctl)=1074310912, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, abi_version={-9222246136947933077:0}, arg=365, argp={0:365}, backend={-9222246136947933069:0}, f={0:576461302059761152}, f={0:576461302059761152}, featurep={0:365}, features={131450:0}, ioctl=1074310912, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0, vs={22518035720064008:18084767258379917}] [L12157] CALL, EXPR copy_from_user((void *)(& features), (void const *)featurep, 8UL) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, \old(n)=8, __this_module={536903680:32768}, from={0:365}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, to={131450:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L7397] int sz ; [L7398] unsigned long tmp ; [L7399] int __ret_warn_on ; [L7400] long tmp___0 ; [L7401] long tmp___1 ; [L7402] long tmp___2 ; [L7404] tmp = __builtin_object_size((void const *)to, 0) [L7405] sz = (int )tmp VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, \old(n)=8, __this_module={536903680:32768}, from={0:365}, from={0:365}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, n=8, sz=4294967295, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=18446744073709551615, to={131450:0}, to={131450:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L7406] FCALL might_fault() VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, \old(n)=8, __this_module={536903680:32768}, from={0:365}, from={0:365}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, n=8, sz=4294967295, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=18446744073709551615, to={131450:0}, to={131450:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L7407] CALL, EXPR ldv__builtin_expect(sz == -1, 1L) VAL [\old(c)=1, \old(exp)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13675] return (exp); VAL [\old(c)=1, \old(exp)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, \result=1, __this_module={536903680:32768}, c=1, exp=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L7407] RET, EXPR ldv__builtin_expect(sz == -1, 1L) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, \old(n)=8, __this_module={536903680:32768}, from={0:365}, from={0:365}, ldv__builtin_expect(sz == -1, 1L)=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, n=8, sz=4294967295, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=18446744073709551615, to={131450:0}, to={131450:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L7407] tmp___1 = ldv__builtin_expect(sz == -1, 1L) [L7408] COND TRUE tmp___1 != 0L VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, \old(n)=8, __this_module={536903680:32768}, from={0:365}, from={0:365}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, n=8, sz=4294967295, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=18446744073709551615, tmp___1=1, to={131450:0}, to={131450:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L7409] CALL, EXPR _copy_from_user(to, from, (unsigned int )n) VAL [\old(arg2)=8, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, arg0={131450:0}, arg1={0:365}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14395] return __VERIFIER_nondet_ulong(); [L7409] RET, EXPR _copy_from_user(to, from, (unsigned int )n) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, \old(n)=8, __this_module={536903680:32768}, _copy_from_user(to, from, (unsigned int )n)=0, from={0:365}, from={0:365}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, n=8, sz=4294967295, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=18446744073709551615, tmp___1=1, to={131450:0}, to={131450:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L7409] n = _copy_from_user(to, from, (unsigned int )n) [L7425] return (n); VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, \old(n)=8, \result=0, __this_module={536903680:32768}, from={0:365}, from={0:365}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, n=0, sz=4294967295, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=18446744073709551615, tmp___1=1, to={131450:0}, to={131450:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12157] RET, EXPR copy_from_user((void *)(& features), (void const *)featurep, 8UL) VAL [\old(arg)=365, \old(ioctl)=1074310912, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, abi_version={-9222246136947933077:0}, arg=365, argp={0:365}, backend={-9222246136947933069:0}, copy_from_user((void *)(& features), (void const *)featurep, 8UL)=0, f={0:576461302059761152}, f={0:576461302059761152}, featurep={0:365}, features={131450:0}, ioctl=1074310912, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0, vs={22518035720064008:18084767258379917}] [L12157] tmp___5 = copy_from_user((void *)(& features), (void const *)featurep, 8UL) [L12158] COND FALSE !(tmp___5 != 0UL) [L12162] EXPR \read(features) [L12162] CALL vhost_scsi_set_features(vs, features) [L12070] int tmp ; VAL [\old(features)=603979776, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, features=603979776, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0, vs={22518035720064008:18084767258379917}, vs={22518035720064008:18084767258379917}] [L12072] COND FALSE !((features & 0xffffffffcaffffffULL) != 0ULL) [L12076] CALL ldv_mutex_lock_41(& vs->dev.mutex) [L13443] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={22518035720064008:18084767258379941}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14037] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={22518035720064008:18084767258379941}, lock={22518035720064008:18084767258379941}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14041] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={22518035720064008:18084767258379941}, lock={22518035720064008:18084767258379941}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13443] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, ldv_func_arg1={22518035720064008:18084767258379941}, ldv_func_arg1={22518035720064008:18084767258379941}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13444] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, ldv_func_arg1={22518035720064008:18084767258379941}, ldv_func_arg1={22518035720064008:18084767258379941}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12076] RET ldv_mutex_lock_41(& vs->dev.mutex) [L12077] COND TRUE (features & 67108864ULL) != 0ULL [L12078] CALL vhost_log_access_ok(& vs->dev) [L8496] struct vhost_memory *mp ; [L8497] bool __warned ; [L8498] int tmp ; [L8499] int tmp___0 ; [L8500] int tmp___1 ; VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, dev={22518035720064008:18084767258379925}, dev={22518035720064008:18084767258379925}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8502] CALL, EXPR debug_lockdep_rcu_enabled() VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14447] return __VERIFIER_nondet_int(); [L8502] RET, EXPR debug_lockdep_rcu_enabled() VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, debug_lockdep_rcu_enabled()=131072, dev={22518035720064008:18084767258379925}, dev={22518035720064008:18084767258379925}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8502] tmp = debug_lockdep_rcu_enabled() [L8503] COND FALSE !(tmp != 0 && ! __warned) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, __warned=2, dev={22518035720064008:18084767258379925}, dev={22518035720064008:18084767258379925}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=131072, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8513] EXPR dev->memory [L8513] mp = dev->memory [L8514] CALL memory_access_ok(dev, mp, 1) VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8418] int i ; [L8419] int ok ; [L8421] i = 0 VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, \old(log_all)=1, __this_module={536903680:32768}, d={22518035720064008:18084767258379925}, d={22518035720064008:18084767258379925}, i=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, log_all=1, mem={2323858541594542088:1794437337317376}, mem={2323858541594542088:1794437337317376}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8437] EXPR d->nvqs VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, \old(log_all)=1, __this_module={536903680:32768}, d={22518035720064008:18084767258379925}, d={22518035720064008:18084767258379925}, d->nvqs=1073741840, i=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, log_all=1, mem={2323858541594542088:1794437337317376}, mem={2323858541594542088:1794437337317376}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8437] COND TRUE d->nvqs > i [L8424] EXPR d->vqs [L8424] CALL ldv_mutex_lock_12(& (d->vqs + (unsigned long )i)->mutex) [L13211] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={4611686019031367712:9700109824}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14037] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={4611686019031367712:9700109824}, lock={4611686019031367712:9700109824}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14039] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13668] reach_error() VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={536903680:32768}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:-8070450532247928832}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 112 procedures, 2407 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 465.0s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 73.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 21134 SdHoareTripleChecker+Valid, 62.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21015 mSDsluCounter, 185188 SdHoareTripleChecker+Invalid, 60.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 138 IncrementalHoareTripleChecker+Unchecked, 143878 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5056 IncrementalHoareTripleChecker+Invalid, 5242 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 41310 mSDtfsCounter, 5056 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1211 GetRequests, 1126 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 21.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2748occurred in iteration=5, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 358 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 198.8s SatisfiabilityAnalysisTime, 27.5s InterpolantComputationTime, 723 NumberOfCodeBlocks, 723 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1190 ConstructedInterpolants, 2 QuantifiedInterpolants, 2163 SizeOfPredicates, 38 NumberOfNonLiveVariables, 15024 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 82/82 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 23:46:59,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65185c7e-3b6c-4246-a1ea-c793f713cb79/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample