./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/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_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7 --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 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:33:13,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:33:13,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:33:13,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:33:13,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:33:13,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:33:13,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:33:13,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:33:13,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:33:13,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:33:13,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:33:13,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:33:13,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:33:13,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:33:13,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:33:13,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:33:13,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:33:13,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:33:13,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:33:13,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:33:13,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:33:13,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:33:13,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:33:13,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:33:13,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:33:13,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:33:13,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:33:13,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:33:13,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:33:13,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:33:13,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:33:13,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:33:13,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:33:13,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:33:13,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:33:13,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:33:13,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:33:13,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:33:13,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:33:13,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:33:13,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:33:13,924 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:33:13,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:33:13,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:33:13,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:33:13,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:33:13,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:33:13,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:33:13,953 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:33:13,954 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:33:13,954 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:33:13,955 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:33:13,955 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:33:13,955 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:33:13,956 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:33:13,956 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:33:13,956 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:33:13,957 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:33:13,957 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:33:13,957 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:33:13,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:33:13,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:33:13,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:33:13,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:33:13,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:33:13,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:33:13,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:33:13,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:33:13,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:33:13,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:33:13,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:33:13,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:33:13,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:33:13,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:33:13,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:33:13,964 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:33:13,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:33:13,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:33:13,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:33:13,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:33:13,966 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_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-11-25 19:33:14,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:33:14,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:33:14,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:33:14,344 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:33:14,346 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:33:14,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-25 19:33:14,434 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/data/d214de4ec/ece31e4511864a37818e883a82f23603/FLAGe3311d292 [2021-11-25 19:33:15,581 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:33:15,582 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-25 19:33:15,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/data/d214de4ec/ece31e4511864a37818e883a82f23603/FLAGe3311d292 [2021-11-25 19:33:15,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/data/d214de4ec/ece31e4511864a37818e883a82f23603 [2021-11-25 19:33:15,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:33:15,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:33:15,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:33:15,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:33:15,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:33:15,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:33:15" (1/1) ... [2021-11-25 19:33:15,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69af2fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:15, skipping insertion in model container [2021-11-25 19:33:15,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:33:15" (1/1) ... [2021-11-25 19:33:15,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:33:16,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:33:19,903 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_40430fb2-1133-44c1-b8cc-20e4c04f8b15/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-25 19:33:20,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:33:20,216 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:33:20,796 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_40430fb2-1133-44c1-b8cc-20e4c04f8b15/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-25 19:33:20,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:33:21,009 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:33:21,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21 WrapperNode [2021-11-25 19:33:21,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:33:21,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:33:21,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:33:21,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:33:21,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (1/1) ... [2021-11-25 19:33:21,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (1/1) ... [2021-11-25 19:33:21,535 INFO L137 Inliner]: procedures = 445, calls = 3482, calls flagged for inlining = 226, calls inlined = 196, statements flattened = 7782 [2021-11-25 19:33:21,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:33:21,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:33:21,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:33:21,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:33:21,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (1/1) ... [2021-11-25 19:33:21,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (1/1) ... [2021-11-25 19:33:21,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (1/1) ... [2021-11-25 19:33:21,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (1/1) ... [2021-11-25 19:33:21,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (1/1) ... [2021-11-25 19:33:22,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (1/1) ... [2021-11-25 19:33:22,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (1/1) ... [2021-11-25 19:33:22,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:33:22,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:33:22,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:33:22,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:33:22,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (1/1) ... [2021-11-25 19:33:22,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:33:22,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:33:22,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:33:22,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:33:22,239 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-25 19:33:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-25 19:33:22,239 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-25 19:33:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-25 19:33:22,239 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-25 19:33:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-25 19:33:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:33:22,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:33:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-25 19:33:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_fabric_acl [2021-11-25 19:33:22,241 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_fabric_acl [2021-11-25 19:33:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:33:22,241 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:33:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_access_ok [2021-11-25 19:33:22,242 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_access_ok [2021-11-25 19:33:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_close_session [2021-11-25 19:33:22,242 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_close_session [2021-11-25 19:33:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-25 19:33:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-25 19:33:22,242 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-25 19:33:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:33:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-25 19:33:22,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-25 19:33:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 19:33:22,243 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 19:33:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 19:33:22,244 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 19:33:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-25 19:33:22,244 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-25 19:33:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-25 19:33:22,244 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-25 19:33:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tpg [2021-11-25 19:33:22,244 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tpg [2021-11-25 19:33:22,245 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-25 19:33:22,245 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-25 19:33:22,245 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-25 19:33:22,245 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-25 19:33:22,245 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_open [2021-11-25 19:33:22,246 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_open [2021-11-25 19:33:22,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:33:22,246 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 19:33:22,246 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 19:33:22,246 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-25 19:33:22,247 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-25 19:33:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-11-25 19:33:22,247 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-11-25 19:33:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:33:22,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:33:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:33:22,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:33:22,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:33:22,250 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:33:22,250 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-25 19:33:22,251 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-25 19:33:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-25 19:33:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 19:33:22,251 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 19:33:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_complete_cmd [2021-11-25 19:33:22,252 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_complete_cmd [2021-11-25 19:33:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-25 19:33:22,253 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-25 19:33:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-25 19:33:22,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-25 19:33:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-25 19:33:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-25 19:33:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-25 19:33:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-25 19:33:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-25 19:33:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-25 19:33:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id [2021-11-25 19:33:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id [2021-11-25 19:33:22,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-25 19:33:22,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-25 19:33:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:33:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:33:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:33:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:33:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-25 19:33:22,256 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-25 19:33:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:33:22,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:33:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-25 19:33:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-25 19:33:22,258 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-25 19:33:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-25 19:33:22,258 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-25 19:33:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-25 19:33:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:33:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:33:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-25 19:33:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-25 19:33:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-11-25 19:33:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-11-25 19:33:22,261 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-25 19:33:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-25 19:33:22,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-25 19:33:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-25 19:33:22,262 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-25 19:33:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-25 19:33:22,262 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 19:33:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 19:33:22,262 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_alloc_fabric_acl [2021-11-25 19:33:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_alloc_fabric_acl [2021-11-25 19:33:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-25 19:33:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-25 19:33:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_ioctl [2021-11-25 19:33:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_ioctl [2021-11-25 19:33:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-25 19:33:22,264 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-25 19:33:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:33:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:33:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tport [2021-11-25 19:33:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tport [2021-11-25 19:33:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-25 19:33:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-25 19:33:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 19:33:22,270 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 19:33:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-25 19:33:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-25 19:33:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:33:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-25 19:33:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-25 19:33:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:33:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-25 19:33:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-25 19:33:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 19:33:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 19:33:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-25 19:33:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-25 19:33:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-25 19:33:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-25 19:33:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-25 19:33:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-25 19:33:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 19:33:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 19:33:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 19:33:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 19:33:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 19:33:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 19:33:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-25 19:33:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-25 19:33:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-25 19:33:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-25 19:33:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 19:33:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 19:33:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-25 19:33:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-25 19:33:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:33:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:33:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:33:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-25 19:33:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-25 19:33:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:33:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-25 19:33:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-25 19:33:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_cmd [2021-11-25 19:33:22,282 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_cmd [2021-11-25 19:33:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_set_default_node_attrs [2021-11-25 19:33:22,282 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_set_default_node_attrs [2021-11-25 19:33:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nexus [2021-11-25 19:33:22,282 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nexus [2021-11-25 19:33:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:33:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-25 19:33:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-25 19:33:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 19:33:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 19:33:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-25 19:33:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-25 19:33:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 19:33:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 19:33:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:33:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:33:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_fabric_proto_ident [2021-11-25 19:33:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_fabric_proto_ident [2021-11-25 19:33:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-25 19:33:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-25 19:33:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-11-25 19:33:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-11-25 19:33:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2021-11-25 19:33:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2021-11-25 19:33:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_deregister [2021-11-25 19:33:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_deregister [2021-11-25 19:33:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 19:33:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 19:33:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-25 19:33:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-25 19:33:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_command_size [2021-11-25 19:33:22,286 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_command_size [2021-11-25 19:33:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_dump_proto_id [2021-11-25 19:33:22,286 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_dump_proto_id [2021-11-25 19:33:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-25 19:33:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-25 19:33:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:33:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:33:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:33:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-25 19:33:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-25 19:33:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_clear_endpoint [2021-11-25 19:33:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_clear_endpoint [2021-11-25 19:33:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-25 19:33:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-25 19:33:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-25 19:33:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-25 19:33:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:33:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:33:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_flush_vq [2021-11-25 19:33:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_flush_vq [2021-11-25 19:33:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-25 19:33:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-25 19:33:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-25 19:33:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-25 19:33:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-25 19:33:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-25 19:33:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure sas_parse_pr_out_transport_id [2021-11-25 19:33:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_parse_pr_out_transport_id [2021-11-25 19:33:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-25 19:33:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-25 19:33:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure utsname [2021-11-25 19:33:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure utsname [2021-11-25 19:33:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-25 19:33:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-25 19:33:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-25 19:33:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-25 19:33:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-25 19:33:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-25 19:33:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-25 19:33:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-25 19:33:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used [2021-11-25 19:33:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used [2021-11-25 19:33:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 19:33:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 19:33:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 19:33:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 19:33:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-25 19:33:22,293 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-25 19:33:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nodeacl [2021-11-25 19:33:22,293 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nodeacl [2021-11-25 19:33:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-25 19:33:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-25 19:33:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_release [2021-11-25 19:33:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_release [2021-11-25 19:33:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-25 19:33:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-25 19:33:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:33:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id_len [2021-11-25 19:33:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id_len [2021-11-25 19:33:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_port_link [2021-11-25 19:33:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_port_link [2021-11-25 19:33:23,627 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:33:23,631 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:33:30,030 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume #t~switch208;#res := ~ret~1; [2021-11-25 19:33:30,030 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !#t~switch208;#t~switch208 := #t~switch208 || 4 == ~size; [2021-11-25 19:33:30,030 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0 != ~tmp___1~4;#res := ~ret~1; [2021-11-25 19:33:30,030 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0 != ~tmp___1~4);#res := ~ret~1; [2021-11-25 19:33:30,031 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc #t~switch208; [2021-11-25 19:33:30,031 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 [2021-11-25 19:33:30,031 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume #t~switch208; [2021-11-25 19:33:30,031 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !#t~switch208;#t~switch208 := #t~switch208 || 16 == ~size; [2021-11-25 19:33:30,031 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474-1: assume -9223372036854775808 <= #t~ret209 && #t~ret209 <= 9223372036854775807;~tmp___0~9 := #t~ret209;havoc #t~ret209; [2021-11-25 19:33:30,031 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch208;#res := ~ret~1; [2021-11-25 19:33:30,032 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); [2021-11-25 19:33:30,032 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 [2021-11-25 19:33:30,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch208;#t~switch208 := #t~switch208 || 2 == ~size; [2021-11-25 19:33:30,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume #t~switch208;#res := ~ret~1; [2021-11-25 19:33:30,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !#t~switch208;#t~switch208 := #t~switch208 || 8 == ~size; [2021-11-25 19:33:30,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487-1: assume -9223372036854775808 <= #t~ret210 && #t~ret210 <= 9223372036854775807;~tmp___1~4 := #t~ret210;havoc #t~ret210; [2021-11-25 19:33:30,033 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 [2021-11-25 19:33:30,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume #t~switch208; [2021-11-25 19:33:30,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !#t~switch208;#t~switch208 := true; [2021-11-25 19:33:30,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0 != ~tmp___0~9;#res := ~ret~1; [2021-11-25 19:33:30,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0 != ~tmp___0~9);#res := ~ret~1; [2021-11-25 19:33:30,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume #t~switch208; [2021-11-25 19:33:30,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !#t~switch208; [2021-11-25 19:33:30,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume #t~switch208;#res := ~ret~1; [2021-11-25 19:33:30,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !#t~switch208;#t~switch208 := #t~switch208 || 10 == ~size; [2021-11-25 19:33:36,173 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:33:37,896 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:33:37,896 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:33:37,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:33:37 BoogieIcfgContainer [2021-11-25 19:33:37,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:33:37,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:33:37,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:33:37,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:33:37,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:33:15" (1/3) ... [2021-11-25 19:33:37,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171d59fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:33:37, skipping insertion in model container [2021-11-25 19:33:37,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:21" (2/3) ... [2021-11-25 19:33:37,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171d59fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:33:37, skipping insertion in model container [2021-11-25 19:33:37,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:33:37" (3/3) ... [2021-11-25 19:33:37,913 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-25 19:33:37,919 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:33:37,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:33:38,009 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:33:38,033 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 [2021-11-25 19:33:38,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:33:38,121 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) [2021-11-25 19:33:38,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:33:38,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:33:38,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:33:38,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:33:38,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:33:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2071767388, now seen corresponding path program 1 times [2021-11-25 19:33:38,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:33:38,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602800412] [2021-11-25 19:33:38,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:38,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:33:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:33:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:33:38,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:33:38,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602800412] [2021-11-25 19:33:38,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602800412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:33:38,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:33:38,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:33:38,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625895823] [2021-11-25 19:33:38,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:33:38,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:33:38,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:33:38,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:33:38,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:33:38,959 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) [2021-11-25 19:33:41,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:33:43,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:33:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:33:45,728 INFO L93 Difference]: Finished difference Result 5819 states and 8724 transitions. [2021-11-25 19:33:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:33:45,731 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 [2021-11-25 19:33:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:33:45,801 INFO L225 Difference]: With dead ends: 5819 [2021-11-25 19:33:45,801 INFO L226 Difference]: Without dead ends: 3867 [2021-11-25 19:33:45,830 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 [2021-11-25 19:33:45,838 INFO L933 BasicCegarLoop]: 3274 mSDtfsCounter, 2867 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s 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, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:33:45,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2869 Valid, 5838 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 555 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 19:33:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2021-11-25 19:33:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3858. [2021-11-25 19:33:46,499 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) [2021-11-25 19:33:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5672 transitions. [2021-11-25 19:33:46,562 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5672 transitions. Word has length 13 [2021-11-25 19:33:46,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:33:46,563 INFO L470 AbstractCegarLoop]: Abstraction has 3858 states and 5672 transitions. [2021-11-25 19:33:46,563 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) [2021-11-25 19:33:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5672 transitions. [2021-11-25 19:33:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 19:33:46,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:33:46,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:33:46,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:33:46,572 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:33:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:33:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash -200871227, now seen corresponding path program 1 times [2021-11-25 19:33:46,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:33:46,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573600408] [2021-11-25 19:33:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:46,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:33:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:33:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:33:46,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:33:46,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573600408] [2021-11-25 19:33:46,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573600408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:33:46,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:33:46,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:33:46,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532508888] [2021-11-25 19:33:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:33:46,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:33:46,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:33:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:33:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:33:46,826 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) [2021-11-25 19:33:49,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:33:51,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:33:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:33:53,047 INFO L93 Difference]: Finished difference Result 3871 states and 5684 transitions. [2021-11-25 19:33:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:33:53,047 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 [2021-11-25 19:33:53,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:33:53,087 INFO L225 Difference]: With dead ends: 3871 [2021-11-25 19:33:53,087 INFO L226 Difference]: Without dead ends: 3868 [2021-11-25 19:33:53,091 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 [2021-11-25 19:33:53,093 INFO L933 BasicCegarLoop]: 3253 mSDtfsCounter, 2844 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s 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, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:33:53,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2846 Valid, 5802 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 554 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 19:33:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-11-25 19:33:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3859. [2021-11-25 19:33:53,371 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) [2021-11-25 19:33:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 5673 transitions. [2021-11-25 19:33:53,418 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 5673 transitions. Word has length 14 [2021-11-25 19:33:53,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:33:53,418 INFO L470 AbstractCegarLoop]: Abstraction has 3859 states and 5673 transitions. [2021-11-25 19:33:53,419 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) [2021-11-25 19:33:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 5673 transitions. [2021-11-25 19:33:53,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:33:53,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:33:53,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:33:53,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:33:53,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:33:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:33:53,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1933186689, now seen corresponding path program 1 times [2021-11-25 19:33:53,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:33:53,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635861014] [2021-11-25 19:33:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:53,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:33:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:33:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:33:53,793 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:33:53,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635861014] [2021-11-25 19:33:53,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635861014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:33:53,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:33:53,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:33:53,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911593578] [2021-11-25 19:33:53,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:33:53,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:33:53,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:33:53,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:33:53,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:33:53,800 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) [2021-11-25 19:33:56,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:33:58,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:00,249 INFO L93 Difference]: Finished difference Result 3872 states and 5685 transitions. [2021-11-25 19:34:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:34:00,250 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 [2021-11-25 19:34:00,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:00,293 INFO L225 Difference]: With dead ends: 3872 [2021-11-25 19:34:00,293 INFO L226 Difference]: Without dead ends: 3869 [2021-11-25 19:34:00,297 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 [2021-11-25 19:34:00,298 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, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:00,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2843 Valid, 5798 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 553 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 19:34:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2021-11-25 19:34:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 3860. [2021-11-25 19:34:00,604 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) [2021-11-25 19:34:00,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 5674 transitions. [2021-11-25 19:34:00,632 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 5674 transitions. Word has length 15 [2021-11-25 19:34:00,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:34:00,633 INFO L470 AbstractCegarLoop]: Abstraction has 3860 states and 5674 transitions. [2021-11-25 19:34:00,633 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) [2021-11-25 19:34:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 5674 transitions. [2021-11-25 19:34:00,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:34:00,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:34:00,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:34:00,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:34:00,637 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:34:00,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:34:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash 199613704, now seen corresponding path program 1 times [2021-11-25 19:34:00,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:34:00,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781233568] [2021-11-25 19:34:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:00,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:34:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:00,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:34:00,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781233568] [2021-11-25 19:34:00,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781233568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:34:00,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:34:00,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:34:00,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219901812] [2021-11-25 19:34:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:34:00,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:34:00,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:34:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:34:00,876 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) [2021-11-25 19:34:03,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:05,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:07,215 INFO L93 Difference]: Finished difference Result 9369 states and 13616 transitions. [2021-11-25 19:34:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:34:07,215 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 [2021-11-25 19:34:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:07,271 INFO L225 Difference]: With dead ends: 9369 [2021-11-25 19:34:07,271 INFO L226 Difference]: Without dead ends: 5548 [2021-11-25 19:34:07,293 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 [2021-11-25 19:34:07,295 INFO L933 BasicCegarLoop]: 2992 mSDtfsCounter, 1563 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s 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, 6.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:07,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 5425 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 562 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-25 19:34:07,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2021-11-25 19:34:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 5520. [2021-11-25 19:34:07,740 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) [2021-11-25 19:34:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5520 states to 5520 states and 7956 transitions. [2021-11-25 19:34:07,785 INFO L78 Accepts]: Start accepts. Automaton has 5520 states and 7956 transitions. Word has length 16 [2021-11-25 19:34:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:34:07,785 INFO L470 AbstractCegarLoop]: Abstraction has 5520 states and 7956 transitions. [2021-11-25 19:34:07,787 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) [2021-11-25 19:34:07,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5520 states and 7956 transitions. [2021-11-25 19:34:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 19:34:07,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:34:07,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:34:07,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:34:07,789 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:34:07,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:34:07,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1891921314, now seen corresponding path program 1 times [2021-11-25 19:34:07,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:34:07,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263750199] [2021-11-25 19:34:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:07,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:34:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:07,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:34:07,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263750199] [2021-11-25 19:34:07,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263750199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:34:07,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:34:07,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:34:07,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99249897] [2021-11-25 19:34:07,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:34:07,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:34:07,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:07,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:34:07,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:34:07,974 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) [2021-11-25 19:34:10,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:12,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:14,244 INFO L93 Difference]: Finished difference Result 8288 states and 11952 transitions. [2021-11-25 19:34:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:34:14,245 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 [2021-11-25 19:34:14,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:14,323 INFO L225 Difference]: With dead ends: 8288 [2021-11-25 19:34:14,323 INFO L226 Difference]: Without dead ends: 8284 [2021-11-25 19:34:14,331 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 [2021-11-25 19:34:14,332 INFO L933 BasicCegarLoop]: 3184 mSDtfsCounter, 2788 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s 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, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:14,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2790 Valid, 5640 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 552 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 19:34:14,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2021-11-25 19:34:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8256. [2021-11-25 19:34:14,952 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) [2021-11-25 19:34:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8256 states to 8256 states and 11917 transitions. [2021-11-25 19:34:15,000 INFO L78 Accepts]: Start accepts. Automaton has 8256 states and 11917 transitions. Word has length 17 [2021-11-25 19:34:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:34:15,001 INFO L470 AbstractCegarLoop]: Abstraction has 8256 states and 11917 transitions. [2021-11-25 19:34:15,001 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) [2021-11-25 19:34:15,002 INFO L276 IsEmpty]: Start isEmpty. Operand 8256 states and 11917 transitions. [2021-11-25 19:34:15,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 19:34:15,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:34:15,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:34:15,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:34:15,005 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:34:15,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:34:15,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1481112757, now seen corresponding path program 1 times [2021-11-25 19:34:15,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:34:15,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766619894] [2021-11-25 19:34:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:15,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:34:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:15,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:34:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766619894] [2021-11-25 19:34:15,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766619894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:34:15,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:34:15,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:34:15,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967781176] [2021-11-25 19:34:15,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:34:15,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:34:15,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:34:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:34:15,214 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) [2021-11-25 19:34:17,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:19,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:21,524 INFO L93 Difference]: Finished difference Result 13689 states and 19812 transitions. [2021-11-25 19:34:21,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:34:21,531 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 [2021-11-25 19:34:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:21,641 INFO L225 Difference]: With dead ends: 13689 [2021-11-25 19:34:21,641 INFO L226 Difference]: Without dead ends: 13668 [2021-11-25 19:34:21,655 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 [2021-11-25 19:34:21,658 INFO L933 BasicCegarLoop]: 3193 mSDtfsCounter, 2783 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s 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, 5.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:21,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2785 Valid, 5662 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 550 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-25 19:34:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13668 states. [2021-11-25 19:34:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13668 to 13639. [2021-11-25 19:34:22,549 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) [2021-11-25 19:34:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13639 states to 13639 states and 19746 transitions. [2021-11-25 19:34:22,632 INFO L78 Accepts]: Start accepts. Automaton has 13639 states and 19746 transitions. Word has length 18 [2021-11-25 19:34:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:34:22,633 INFO L470 AbstractCegarLoop]: Abstraction has 13639 states and 19746 transitions. [2021-11-25 19:34:22,633 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) [2021-11-25 19:34:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 13639 states and 19746 transitions. [2021-11-25 19:34:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 19:34:22,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:34:22,644 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] [2021-11-25 19:34:22,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:34:22,644 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:34:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:34:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1164194431, now seen corresponding path program 1 times [2021-11-25 19:34:22,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:34:22,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797331201] [2021-11-25 19:34:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:22,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:34:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:34:23,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:34:23,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797331201] [2021-11-25 19:34:23,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797331201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:34:23,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:34:23,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:34:23,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228250449] [2021-11-25 19:34:23,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:34:23,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:34:23,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:23,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:34:23,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:34:23,028 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) [2021-11-25 19:34:25,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:27,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:30,595 INFO L93 Difference]: Finished difference Result 28779 states and 42709 transitions. [2021-11-25 19:34:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:34:30,596 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 [2021-11-25 19:34:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:30,710 INFO L225 Difference]: With dead ends: 28779 [2021-11-25 19:34:30,711 INFO L226 Difference]: Without dead ends: 17766 [2021-11-25 19:34:30,793 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 [2021-11-25 19:34:30,794 INFO L933 BasicCegarLoop]: 3070 mSDtfsCounter, 488 mSDsluCounter, 6036 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 199 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 8555 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:30,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 8555 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 878 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 19:34:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17766 states. [2021-11-25 19:34:31,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17766 to 13641. [2021-11-25 19:34:31,751 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) [2021-11-25 19:34:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 19748 transitions. [2021-11-25 19:34:31,835 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 19748 transitions. Word has length 35 [2021-11-25 19:34:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:34:31,836 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 19748 transitions. [2021-11-25 19:34:31,836 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) [2021-11-25 19:34:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 19748 transitions. [2021-11-25 19:34:31,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 19:34:31,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:34:31,842 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] [2021-11-25 19:34:31,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:34:31,843 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:34:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:34:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1804436506, now seen corresponding path program 1 times [2021-11-25 19:34:31,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:34:31,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809688332] [2021-11-25 19:34:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:31,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:34:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:34:32,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:34:32,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809688332] [2021-11-25 19:34:32,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809688332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:34:32,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:34:32,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:34:32,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742826552] [2021-11-25 19:34:32,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:34:32,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:34:32,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:32,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:34:32,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:34:32,329 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) [2021-11-25 19:34:34,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:36,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:39,116 INFO L93 Difference]: Finished difference Result 15847 states and 23451 transitions. [2021-11-25 19:34:39,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:34:39,116 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 [2021-11-25 19:34:39,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:39,206 INFO L225 Difference]: With dead ends: 15847 [2021-11-25 19:34:39,207 INFO L226 Difference]: Without dead ends: 15832 [2021-11-25 19:34:39,218 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 [2021-11-25 19:34:39,219 INFO L933 BasicCegarLoop]: 2967 mSDtfsCounter, 469 mSDsluCounter, 5623 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 193 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s 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, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:39,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 8080 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 831 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 19:34:39,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15832 states. [2021-11-25 19:34:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15832 to 13643. [2021-11-25 19:34:40,265 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) [2021-11-25 19:34:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13643 states to 13643 states and 19750 transitions. [2021-11-25 19:34:40,341 INFO L78 Accepts]: Start accepts. Automaton has 13643 states and 19750 transitions. Word has length 39 [2021-11-25 19:34:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:34:40,343 INFO L470 AbstractCegarLoop]: Abstraction has 13643 states and 19750 transitions. [2021-11-25 19:34:40,343 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) [2021-11-25 19:34:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 13643 states and 19750 transitions. [2021-11-25 19:34:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 19:34:40,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:34:40,349 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] [2021-11-25 19:34:40,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:34:40,350 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:34:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:34:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash -40717220, now seen corresponding path program 1 times [2021-11-25 19:34:40,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:34:40,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399010607] [2021-11-25 19:34:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:40,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:34:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:34:40,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:34:40,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399010607] [2021-11-25 19:34:40,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399010607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:34:40,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:34:40,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:34:40,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434984831] [2021-11-25 19:34:40,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:34:40,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:34:40,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:40,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:34:40,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:34:40,674 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) [2021-11-25 19:34:42,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:44,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:45,859 INFO L93 Difference]: Finished difference Result 13645 states and 19751 transitions. [2021-11-25 19:34:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:34:45,860 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 [2021-11-25 19:34:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:45,937 INFO L225 Difference]: With dead ends: 13645 [2021-11-25 19:34:45,938 INFO L226 Difference]: Without dead ends: 13642 [2021-11-25 19:34:45,947 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 [2021-11-25 19:34:45,948 INFO L933 BasicCegarLoop]: 2586 mSDtfsCounter, 2837 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s 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, 4.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:45,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2839 Valid, 2586 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2021-11-25 19:34:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13642 states. [2021-11-25 19:34:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13642 to 13642. [2021-11-25 19:34:46,924 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) [2021-11-25 19:34:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13642 states to 13642 states and 19741 transitions. [2021-11-25 19:34:47,001 INFO L78 Accepts]: Start accepts. Automaton has 13642 states and 19741 transitions. Word has length 43 [2021-11-25 19:34:47,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:34:47,002 INFO L470 AbstractCegarLoop]: Abstraction has 13642 states and 19741 transitions. [2021-11-25 19:34:47,002 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) [2021-11-25 19:34:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand 13642 states and 19741 transitions. [2021-11-25 19:34:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 19:34:47,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:34:47,007 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] [2021-11-25 19:34:47,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:34:47,007 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:34:47,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:34:47,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1263384635, now seen corresponding path program 1 times [2021-11-25 19:34:47,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:34:47,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349416126] [2021-11-25 19:34:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:47,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:34:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:34:47,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:34:47,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349416126] [2021-11-25 19:34:47,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349416126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:34:47,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:34:47,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:34:47,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677912753] [2021-11-25 19:34:47,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:34:47,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:34:47,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:47,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:34:47,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:34:47,294 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) [2021-11-25 19:34:49,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:51,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:52,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:52,832 INFO L93 Difference]: Finished difference Result 13644 states and 19742 transitions. [2021-11-25 19:34:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:34:52,844 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 [2021-11-25 19:34:52,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:52,908 INFO L225 Difference]: With dead ends: 13644 [2021-11-25 19:34:52,908 INFO L226 Difference]: Without dead ends: 13641 [2021-11-25 19:34:52,918 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 [2021-11-25 19:34:52,919 INFO L933 BasicCegarLoop]: 2584 mSDtfsCounter, 2834 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s 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, 5.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:52,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 2584 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2021-11-25 19:34:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13641 states. [2021-11-25 19:34:53,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13641 to 13641. [2021-11-25 19:34:53,712 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) [2021-11-25 19:34:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 19732 transitions. [2021-11-25 19:34:53,790 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 19732 transitions. Word has length 44 [2021-11-25 19:34:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:34:53,791 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 19732 transitions. [2021-11-25 19:34:53,791 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) [2021-11-25 19:34:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 19732 transitions. [2021-11-25 19:34:53,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 19:34:53,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:34:53,795 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] [2021-11-25 19:34:53,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:34:53,796 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:34:53,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:34:53,796 INFO L85 PathProgramCache]: Analyzing trace with hash -947465374, now seen corresponding path program 1 times [2021-11-25 19:34:53,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:34:53,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516911412] [2021-11-25 19:34:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:53,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:34:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:34:54,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:34:54,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516911412] [2021-11-25 19:34:54,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516911412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:34:54,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:34:54,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:34:54,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447266265] [2021-11-25 19:34:54,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:34:54,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:34:54,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:54,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:34:54,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:34:54,115 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) [2021-11-25 19:34:56,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:58,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:34:59,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:59,842 INFO L93 Difference]: Finished difference Result 22366 states and 31448 transitions. [2021-11-25 19:34:59,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:34:59,843 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 [2021-11-25 19:34:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:59,918 INFO L225 Difference]: With dead ends: 22366 [2021-11-25 19:34:59,919 INFO L226 Difference]: Without dead ends: 13012 [2021-11-25 19:34:59,976 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 [2021-11-25 19:34:59,977 INFO L933 BasicCegarLoop]: 2491 mSDtfsCounter, 1345 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 5.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:59,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 3782 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2021-11-25 19:34:59,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13012 states. [2021-11-25 19:35:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13012 to 12985. [2021-11-25 19:35:00,846 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) [2021-11-25 19:35:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12985 states to 12985 states and 18312 transitions. [2021-11-25 19:35:00,914 INFO L78 Accepts]: Start accepts. Automaton has 12985 states and 18312 transitions. Word has length 44 [2021-11-25 19:35:00,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:00,915 INFO L470 AbstractCegarLoop]: Abstraction has 12985 states and 18312 transitions. [2021-11-25 19:35:00,915 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) [2021-11-25 19:35:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 12985 states and 18312 transitions. [2021-11-25 19:35:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:35:00,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:00,920 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] [2021-11-25 19:35:00,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:35:00,920 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:00,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:00,921 INFO L85 PathProgramCache]: Analyzing trace with hash -511363969, now seen corresponding path program 1 times [2021-11-25 19:35:00,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:00,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083906505] [2021-11-25 19:35:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:00,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:35:01,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:35:01,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083906505] [2021-11-25 19:35:01,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083906505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:01,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:35:01,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:35:01,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290858675] [2021-11-25 19:35:01,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:01,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:35:01,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:01,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:35:01,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:35:01,182 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) [2021-11-25 19:35:03,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:05,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:06,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:35:06,368 INFO L93 Difference]: Finished difference Result 12987 states and 18313 transitions. [2021-11-25 19:35:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:35:06,369 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 [2021-11-25 19:35:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:35:06,426 INFO L225 Difference]: With dead ends: 12987 [2021-11-25 19:35:06,426 INFO L226 Difference]: Without dead ends: 12966 [2021-11-25 19:35:06,436 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 [2021-11-25 19:35:06,437 INFO L933 BasicCegarLoop]: 2347 mSDtfsCounter, 2583 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s 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, 4.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:35:06,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2585 Valid, 2347 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2021-11-25 19:35:06,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2021-11-25 19:35:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 12966. [2021-11-25 19:35:07,299 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) [2021-11-25 19:35:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12966 states to 12966 states and 18281 transitions. [2021-11-25 19:35:07,350 INFO L78 Accepts]: Start accepts. Automaton has 12966 states and 18281 transitions. Word has length 45 [2021-11-25 19:35:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:07,351 INFO L470 AbstractCegarLoop]: Abstraction has 12966 states and 18281 transitions. [2021-11-25 19:35:07,351 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) [2021-11-25 19:35:07,351 INFO L276 IsEmpty]: Start isEmpty. Operand 12966 states and 18281 transitions. [2021-11-25 19:35:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-25 19:35:07,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:07,355 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] [2021-11-25 19:35:07,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:35:07,355 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1326445064, now seen corresponding path program 1 times [2021-11-25 19:35:07,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:07,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726236321] [2021-11-25 19:35:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:07,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:35:07,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:35:07,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726236321] [2021-11-25 19:35:07,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726236321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:07,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:35:07,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:35:07,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298933150] [2021-11-25 19:35:07,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:07,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:35:07,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:35:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:35:07,595 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) [2021-11-25 19:35:09,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:11,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:35:13,444 INFO L93 Difference]: Finished difference Result 12971 states and 18284 transitions. [2021-11-25 19:35:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:35:13,445 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 [2021-11-25 19:35:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:35:13,495 INFO L225 Difference]: With dead ends: 12971 [2021-11-25 19:35:13,495 INFO L226 Difference]: Without dead ends: 12948 [2021-11-25 19:35:13,502 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 [2021-11-25 19:35:13,503 INFO L933 BasicCegarLoop]: 2402 mSDtfsCounter, 1429 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s 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, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:35:13,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 3614 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 411 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 19:35:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12948 states. [2021-11-25 19:35:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12948 to 12858. [2021-11-25 19:35:14,141 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) [2021-11-25 19:35:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12858 states to 12858 states and 18133 transitions. [2021-11-25 19:35:14,182 INFO L78 Accepts]: Start accepts. Automaton has 12858 states and 18133 transitions. Word has length 46 [2021-11-25 19:35:14,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:14,183 INFO L470 AbstractCegarLoop]: Abstraction has 12858 states and 18133 transitions. [2021-11-25 19:35:14,183 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) [2021-11-25 19:35:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 12858 states and 18133 transitions. [2021-11-25 19:35:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:35:14,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:14,187 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] [2021-11-25 19:35:14,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:35:14,188 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1831012190, now seen corresponding path program 1 times [2021-11-25 19:35:14,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:14,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591622401] [2021-11-25 19:35:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:14,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:35:14,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:35:14,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591622401] [2021-11-25 19:35:14,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591622401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:14,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:35:14,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:35:14,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170609518] [2021-11-25 19:35:14,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:14,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:35:14,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:35:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:35:14,417 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) [2021-11-25 19:35:16,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:18,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:19,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:35:19,891 INFO L93 Difference]: Finished difference Result 12896 states and 18158 transitions. [2021-11-25 19:35:19,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:35:19,892 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 [2021-11-25 19:35:19,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:35:19,946 INFO L225 Difference]: With dead ends: 12896 [2021-11-25 19:35:19,947 INFO L226 Difference]: Without dead ends: 12868 [2021-11-25 19:35:19,957 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 [2021-11-25 19:35:19,958 INFO L933 BasicCegarLoop]: 2340 mSDtfsCounter, 2513 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s 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, 4.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:35:19,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2515 Valid, 2405 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2021-11-25 19:35:19,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12868 states. [2021-11-25 19:35:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12868 to 12816. [2021-11-25 19:35:20,665 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) [2021-11-25 19:35:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12816 states to 12816 states and 18047 transitions. [2021-11-25 19:35:20,712 INFO L78 Accepts]: Start accepts. Automaton has 12816 states and 18047 transitions. Word has length 47 [2021-11-25 19:35:20,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:20,713 INFO L470 AbstractCegarLoop]: Abstraction has 12816 states and 18047 transitions. [2021-11-25 19:35:20,713 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) [2021-11-25 19:35:20,713 INFO L276 IsEmpty]: Start isEmpty. Operand 12816 states and 18047 transitions. [2021-11-25 19:35:20,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-25 19:35:20,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:20,716 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] [2021-11-25 19:35:20,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:35:20,717 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:20,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash -927934389, now seen corresponding path program 1 times [2021-11-25 19:35:20,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:20,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422003130] [2021-11-25 19:35:20,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:20,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:35:21,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:35:21,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422003130] [2021-11-25 19:35:21,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422003130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:21,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:35:21,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:35:21,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131645322] [2021-11-25 19:35:21,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:21,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:35:21,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:21,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:35:21,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:35:21,096 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) [2021-11-25 19:35:23,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:25,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:35:26,260 INFO L93 Difference]: Finished difference Result 12830 states and 18054 transitions. [2021-11-25 19:35:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:35:26,261 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 [2021-11-25 19:35:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:35:26,299 INFO L225 Difference]: With dead ends: 12830 [2021-11-25 19:35:26,299 INFO L226 Difference]: Without dead ends: 12788 [2021-11-25 19:35:26,306 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 [2021-11-25 19:35:26,307 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 [2021-11-25 19:35:26,307 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] [2021-11-25 19:35:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12788 states. [2021-11-25 19:35:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12788 to 12745. [2021-11-25 19:35:26,957 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) [2021-11-25 19:35:27,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 17926 transitions. [2021-11-25 19:35:27,003 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 17926 transitions. Word has length 48 [2021-11-25 19:35:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:27,003 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 17926 transitions. [2021-11-25 19:35:27,003 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) [2021-11-25 19:35:27,003 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 17926 transitions. [2021-11-25 19:35:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-25 19:35:27,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:27,009 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] [2021-11-25 19:35:27,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:35:27,010 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:27,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:27,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2009586775, now seen corresponding path program 1 times [2021-11-25 19:35:27,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:27,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937683602] [2021-11-25 19:35:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:27,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:35:27,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:35:27,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937683602] [2021-11-25 19:35:27,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937683602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:27,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:35:27,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:35:27,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059388641] [2021-11-25 19:35:27,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:27,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:35:27,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:35:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:35:27,208 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) [2021-11-25 19:35:29,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:31,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:35:34,245 INFO L93 Difference]: Finished difference Result 14704 states and 20672 transitions. [2021-11-25 19:35:34,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:35:34,246 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 [2021-11-25 19:35:34,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:35:34,284 INFO L225 Difference]: With dead ends: 14704 [2021-11-25 19:35:34,284 INFO L226 Difference]: Without dead ends: 12745 [2021-11-25 19:35:34,295 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 [2021-11-25 19:35:34,297 INFO L933 BasicCegarLoop]: 2314 mSDtfsCounter, 3 mSDsluCounter, 7711 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s 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, 6.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:35:34,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 9247 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1055 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2021-11-25 19:35:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12745 states. [2021-11-25 19:35:34,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12745 to 12745. [2021-11-25 19:35:34,922 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) [2021-11-25 19:35:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 17925 transitions. [2021-11-25 19:35:34,963 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 17925 transitions. Word has length 57 [2021-11-25 19:35:34,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:34,964 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 17925 transitions. [2021-11-25 19:35:34,964 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) [2021-11-25 19:35:34,964 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 17925 transitions. [2021-11-25 19:35:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 19:35:34,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:34,971 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] [2021-11-25 19:35:34,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 19:35:34,971 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1117907602, now seen corresponding path program 1 times [2021-11-25 19:35:34,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:34,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229896537] [2021-11-25 19:35:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:34,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:35:35,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:35:35,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229896537] [2021-11-25 19:35:35,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229896537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:35,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:35:35,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:35:35,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169112004] [2021-11-25 19:35:35,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:35,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:35:35,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:35,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:35:35,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:35:35,184 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) [2021-11-25 19:35:37,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:39,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:35:41,880 INFO L93 Difference]: Finished difference Result 25439 states and 35786 transitions. [2021-11-25 19:35:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:35:41,881 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 [2021-11-25 19:35:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:35:41,938 INFO L225 Difference]: With dead ends: 25439 [2021-11-25 19:35:41,939 INFO L226 Difference]: Without dead ends: 12727 [2021-11-25 19:35:41,985 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 [2021-11-25 19:35:41,986 INFO L933 BasicCegarLoop]: 2313 mSDtfsCounter, 4 mSDsluCounter, 7706 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s 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, 6.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:35:41,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 9241 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1051 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-25 19:35:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12727 states. [2021-11-25 19:35:42,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12727 to 12727. [2021-11-25 19:35:42,524 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) [2021-11-25 19:35:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 17903 transitions. [2021-11-25 19:35:42,567 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 17903 transitions. Word has length 61 [2021-11-25 19:35:42,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:42,567 INFO L470 AbstractCegarLoop]: Abstraction has 12727 states and 17903 transitions. [2021-11-25 19:35:42,567 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) [2021-11-25 19:35:42,568 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 17903 transitions. [2021-11-25 19:35:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 19:35:42,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:42,577 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] [2021-11-25 19:35:42,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 19:35:42,577 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash -889745118, now seen corresponding path program 1 times [2021-11-25 19:35:42,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:42,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181342487] [2021-11-25 19:35:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:42,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:35:44,006 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:35:44,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181342487] [2021-11-25 19:35:44,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181342487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:44,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:35:44,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 19:35:44,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813419431] [2021-11-25 19:35:44,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:44,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:35:44,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:44,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:35:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:35:44,008 INFO L87 Difference]: Start difference. First operand 12727 states and 17903 transitions. Second operand has 13 states, 8 states have (on average 6.75) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 19:35:46,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:49,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:35:55,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:35:55,870 INFO L93 Difference]: Finished difference Result 12752 states and 17922 transitions. [2021-11-25 19:35:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:35:55,871 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 6.75) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 80 [2021-11-25 19:35:55,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:35:55,899 INFO L225 Difference]: With dead ends: 12752 [2021-11-25 19:35:55,899 INFO L226 Difference]: Without dead ends: 10788 [2021-11-25 19:35:55,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:35:55,910 INFO L933 BasicCegarLoop]: 2182 mSDtfsCounter, 4 mSDsluCounter, 24244 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23862 SdHoareTripleChecker+Invalid, 4333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:35:55,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23862 Invalid, 4333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 4325 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2021-11-25 19:35:55,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10788 states. [2021-11-25 19:35:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 10788. [2021-11-25 19:35:56,287 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) [2021-11-25 19:35:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10788 states to 10788 states and 15170 transitions. [2021-11-25 19:35:56,318 INFO L78 Accepts]: Start accepts. Automaton has 10788 states and 15170 transitions. Word has length 80 [2021-11-25 19:35:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:56,318 INFO L470 AbstractCegarLoop]: Abstraction has 10788 states and 15170 transitions. [2021-11-25 19:35:56,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 6.75) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 19:35:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 10788 states and 15170 transitions. [2021-11-25 19:35:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 19:35:56,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:56,323 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, 1, 1] [2021-11-25 19:35:56,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 19:35:56,324 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:56,324 INFO L85 PathProgramCache]: Analyzing trace with hash 952766997, now seen corresponding path program 1 times [2021-11-25 19:35:56,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:56,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092526111] [2021-11-25 19:35:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:56,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:35:57,838 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:36:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:36:03,460 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:36:03,461 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:36:03,463 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:36:03,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 19:36:03,467 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] [2021-11-25 19:36:03,471 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:36:03,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:36:03 BoogieIcfgContainer [2021-11-25 19:36:03,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:36:03,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:36:03,639 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:36:03,640 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:36:03,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:33:37" (3/4) ... [2021-11-25 19:36:03,643 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:36:03,643 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:36:03,643 INFO L158 Benchmark]: Toolchain (without parser) took 167727.28ms. Allocated memory was 134.2MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 84.2MB in the beginning and 727.6MB in the end (delta: -643.5MB). Peak memory consumption was 942.3MB. Max. memory is 16.1GB. [2021-11-25 19:36:03,644 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory was 52.8MB in the beginning and 52.8MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:36:03,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5092.45ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 83.7MB in the beginning and 64.5MB in the end (delta: 19.3MB). Peak memory consumption was 83.1MB. Max. memory is 16.1GB. [2021-11-25 19:36:03,645 INFO L158 Benchmark]: Boogie Procedure Inliner took 524.82ms. Allocated memory was 182.5MB in the beginning and 285.2MB in the end (delta: 102.8MB). Free memory was 64.5MB in the beginning and 164.7MB in the end (delta: -100.2MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-11-25 19:36:03,645 INFO L158 Benchmark]: Boogie Preprocessor took 600.07ms. Allocated memory is still 285.2MB. Free memory was 164.7MB in the beginning and 165.9MB in the end (delta: -1.2MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2021-11-25 19:36:03,645 INFO L158 Benchmark]: RCFGBuilder took 15764.90ms. Allocated memory was 285.2MB in the beginning and 578.8MB in the end (delta: 293.6MB). Free memory was 165.9MB in the beginning and 294.9MB in the end (delta: -129.0MB). Peak memory consumption was 359.2MB. Max. memory is 16.1GB. [2021-11-25 19:36:03,646 INFO L158 Benchmark]: TraceAbstraction took 145733.70ms. Allocated memory was 578.8MB in the beginning and 1.7GB in the end (delta: 1.1GB). Free memory was 293.8MB in the beginning and 728.7MB in the end (delta: -434.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-11-25 19:36:03,646 INFO L158 Benchmark]: Witness Printer took 3.53ms. Allocated memory is still 1.7GB. Free memory was 728.7MB in the beginning and 727.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:36:03,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory was 52.8MB in the beginning and 52.8MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5092.45ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 83.7MB in the beginning and 64.5MB in the end (delta: 19.3MB). Peak memory consumption was 83.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 524.82ms. Allocated memory was 182.5MB in the beginning and 285.2MB in the end (delta: 102.8MB). Free memory was 64.5MB in the beginning and 164.7MB in the end (delta: -100.2MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 600.07ms. Allocated memory is still 285.2MB. Free memory was 164.7MB in the beginning and 165.9MB in the end (delta: -1.2MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. * RCFGBuilder took 15764.90ms. Allocated memory was 285.2MB in the beginning and 578.8MB in the end (delta: 293.6MB). Free memory was 165.9MB in the beginning and 294.9MB in the end (delta: -129.0MB). Peak memory consumption was 359.2MB. Max. memory is 16.1GB. * TraceAbstraction took 145733.70ms. Allocated memory was 578.8MB in the beginning and 1.7GB in the end (delta: 1.1GB). Free memory was 293.8MB in the beginning and 728.7MB in the end (delta: -434.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 3.53ms. Allocated memory is still 1.7GB. Free memory was 728.7MB in the beginning and 727.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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={36893488147419103279:36893488147419103246}, 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)={366:-365}, __key={368:0}, __lock_name={354:0}, __this_module={36893488147419103279:36893488147419103246}, 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={366:-365}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp={366:-365}, 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={36893488147419103279:36893488147419103246}, descriptor={367:0}, descriptor.flags=0, descriptor___0={370:0}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, descriptor={367:0}, descriptor.flags=0, descriptor___0={370:0}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, descriptor={367:0}, descriptor___0={370:0}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, arg0={36893488147419103279:36893488147419103246}, arg0={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, descriptor={367:0}, descriptor___0={370:0}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, descriptor={367:0}, descriptor___0={370:0}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, descriptor={367:0}, descriptor___0={370:0}, descriptor___0.flags=0, fabric={0:0}, ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L)=-3, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, tmp___4=-3, 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)={366:-365}, __lock_name={354:0}, __this_module={36893488147419103279:36893488147419103246}, 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={366:-365}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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: [L12957] case 3: VAL [__this_module={36893488147419103279:36893488147419103246}, 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={366:-365}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, tmp___0=3, tmp___1=-4, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12958] FCALL ldv_handler_precall() VAL [__this_module={36893488147419103279:36893488147419103246}, 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={366:-365}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, tmp___0=3, tmp___1=-4, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12959] CALL vhost_scsi_compat_ioctl(var_group2, var_vhost_scsi_compat_ioctl_45_p1, var_vhost_scsi_compat_ioctl_45_p2) [L12175] void *tmp ; [L12176] long tmp___0 ; [L12178] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L7259] return ((void *)((unsigned long )uptr)); [L12178] RET, EXPR compat_ptr((compat_uptr_t )arg) [L12178] tmp = compat_ptr((compat_uptr_t )arg) [L12179] CALL vhost_scsi_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={36893488147419103308:405}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={36893488147419103308:405}, lock={36893488147419103308:405}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, ldv_func_arg1={36893488147419103308:405}, ldv_func_arg1={36893488147419103308:405}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, ldv_func_arg1={36893488147419103308:405}, ldv_func_arg1={36893488147419103308:405}, 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={366:-365}, 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)=379, \old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103279:36893488147419103246}, arg=379, argp={0:379}, ctx={0:0}, d={36893488147419103308:389}, d={36893488147419103308:389}, 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={374:0}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, dev={36893488147419103308:389}, dev={36893488147419103308:389}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, dev={36893488147419103308:389}, dev={36893488147419103308:389}, get_current()={36893488147419103282:-6}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, a={377:0}, argp={0:379}, argp={0:379}, ctx={0:0}, d={36893488147419103308:389}, d={36893488147419103308:389}, f={376:0}, filep={0:0}, idxp={0:379}, 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={375:0}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, a={377:0}, argp={0:379}, argp={0:379}, ctx={0:0}, d={36893488147419103308:389}, d={36893488147419103308:389}, f={376:0}, filep={0:0}, idxp={0:379}, 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={375:0}, 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={366:-365}, 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=365, __this_module={36893488147419103279:36893488147419103246}, __val_gu=382, a={377:0}, argp={0:379}, argp={0:379}, ctx={0:0}, d={36893488147419103308:389}, d={36893488147419103308:389}, f={376:0}, filep={0:0}, idx=382, idxp={0:379}, 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=365, s={375:0}, 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={366:-365}, 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=365, __this_module={36893488147419103279:36893488147419103246}, __val_gu=382, a={377:0}, argp={0:379}, argp={0:379}, ctx={0:0}, d={36893488147419103308:389}, d={36893488147419103308:389}, d->nvqs=4294967679, f={376:0}, filep={0:0}, idx=382, idxp={0:379}, 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=365, s={375:0}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={36893488147419103235:6540231}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={36893488147419103235:6540231}, lock={36893488147419103235:6540231}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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={36893488147419103279:36893488147419103246}, 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={366:-365}, 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: 145.5s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 118.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 36 mSolverCounterUnknown, 32925 SdHoareTripleChecker+Valid, 108.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32704 mSDsluCounter, 112862 SdHoareTripleChecker+Invalid, 103.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70906 mSDsCounter, 422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13723 IncrementalHoareTripleChecker+Invalid, 14181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 422 mSolverCounterUnsat, 49076 mSDtfsCounter, 13723 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13643occurred in iteration=8, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 6638 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 765 NumberOfCodeBlocks, 765 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 664 ConstructedInterpolants, 0 QuantifiedInterpolants, 1305 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 [2021-11-25 19:36:03,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/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_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/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_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7 --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 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:36:05,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:36:05,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:36:06,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:36:06,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:36:06,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:36:06,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:36:06,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:36:06,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:36:06,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:36:06,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:36:06,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:36:06,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:36:06,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:36:06,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:36:06,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:36:06,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:36:06,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:36:06,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:36:06,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:36:06,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:36:06,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:36:06,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:36:06,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:36:06,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:36:06,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:36:06,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:36:06,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:36:06,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:36:06,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:36:06,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:36:06,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:36:06,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:36:06,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:36:06,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:36:06,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:36:06,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:36:06,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:36:06,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:36:06,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:36:06,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:36:06,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-25 19:36:06,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:36:06,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:36:06,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:36:06,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:36:06,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:36:06,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:36:06,179 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:36:06,179 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:36:06,180 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:36:06,180 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:36:06,180 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:36:06,180 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:36:06,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:36:06,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:36:06,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:36:06,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:36:06,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:36:06,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:36:06,184 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:36:06,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:36:06,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:36:06,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:36:06,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:36:06,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:36:06,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:36:06,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:36:06,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:36:06,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:36:06,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:36:06,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:36:06,187 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:36:06,187 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:36:06,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:36:06,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:36:06,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:36:06,188 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_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-11-25 19:36:06,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:36:06,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:36:06,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:36:06,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:36:06,588 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:36:06,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-25 19:36:06,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/data/ce3b2bd0b/68d2f4902a12441aa2e0d8030df929f4/FLAGd4dbbd0a3 [2021-11-25 19:36:07,721 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:36:07,722 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-25 19:36:07,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/data/ce3b2bd0b/68d2f4902a12441aa2e0d8030df929f4/FLAGd4dbbd0a3 [2021-11-25 19:36:08,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/data/ce3b2bd0b/68d2f4902a12441aa2e0d8030df929f4 [2021-11-25 19:36:08,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:36:08,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:36:08,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:36:08,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:36:08,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:36:08,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:36:08" (1/1) ... [2021-11-25 19:36:08,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753756ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:08, skipping insertion in model container [2021-11-25 19:36:08,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:36:08" (1/1) ... [2021-11-25 19:36:08,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:36:08,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:36:11,547 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_40430fb2-1133-44c1-b8cc-20e4c04f8b15/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-25 19:36:11,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:36:11,765 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 19:36:11,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:36:12,330 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_40430fb2-1133-44c1-b8cc-20e4c04f8b15/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-25 19:36:12,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:36:12,361 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:36:12,920 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_40430fb2-1133-44c1-b8cc-20e4c04f8b15/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-25 19:36:12,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:36:13,256 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:36:13,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13 WrapperNode [2021-11-25 19:36:13,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:36:13,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:36:13,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:36:13,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:36:13,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (1/1) ... [2021-11-25 19:36:13,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (1/1) ... [2021-11-25 19:36:13,693 INFO L137 Inliner]: procedures = 460, calls = 3477, calls flagged for inlining = 227, calls inlined = 194, statements flattened = 7521 [2021-11-25 19:36:13,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:36:13,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:36:13,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:36:13,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:36:13,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (1/1) ... [2021-11-25 19:36:13,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (1/1) ... [2021-11-25 19:36:13,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (1/1) ... [2021-11-25 19:36:13,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (1/1) ... [2021-11-25 19:36:13,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (1/1) ... [2021-11-25 19:36:13,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (1/1) ... [2021-11-25 19:36:13,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (1/1) ... [2021-11-25 19:36:14,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:36:14,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:36:14,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:36:14,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:36:14,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (1/1) ... [2021-11-25 19:36:14,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:36:14,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:14,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:36:14,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:36:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-25 19:36:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-25 19:36:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-25 19:36:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-25 19:36:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-25 19:36:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-25 19:36:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:36:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:36:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-25 19:36:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_fabric_acl [2021-11-25 19:36:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_fabric_acl [2021-11-25 19:36:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:36:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:36:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_access_ok [2021-11-25 19:36:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_access_ok [2021-11-25 19:36:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_close_session [2021-11-25 19:36:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_close_session [2021-11-25 19:36:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-25 19:36:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-25 19:36:14,217 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-25 19:36:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:36:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-25 19:36:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:36:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-25 19:36:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-25 19:36:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-25 19:36:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-25 19:36:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 19:36:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 19:36:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 19:36:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 19:36:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-25 19:36:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-25 19:36:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-25 19:36:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-25 19:36:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tpg [2021-11-25 19:36:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tpg [2021-11-25 19:36:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-25 19:36:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-25 19:36:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-25 19:36:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-25 19:36:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 19:36:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 19:36:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-25 19:36:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-25 19:36:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-11-25 19:36:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-11-25 19:36:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:36:14,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:36:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:36:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:36:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-25 19:36:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-25 19:36:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-25 19:36:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 19:36:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 19:36:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_complete_cmd [2021-11-25 19:36:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_complete_cmd [2021-11-25 19:36:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-25 19:36:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-25 19:36:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-25 19:36:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-25 19:36:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-25 19:36:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-25 19:36:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-25 19:36:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-25 19:36:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-25 19:36:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-25 19:36:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id [2021-11-25 19:36:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id [2021-11-25 19:36:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-25 19:36:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-25 19:36:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:36:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:36:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:36:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:36:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-25 19:36:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-25 19:36:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-25 19:36:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-25 19:36:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:36:14,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:36:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-25 19:36:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-25 19:36:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-25 19:36:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-25 19:36:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-25 19:36:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-25 19:36:14,233 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-25 19:36:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:36:14,234 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:36:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-25 19:36:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-25 19:36:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-11-25 19:36:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-11-25 19:36:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-25 19:36:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-25 19:36:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-25 19:36:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-25 19:36:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-25 19:36:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-25 19:36:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 19:36:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 19:36:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_alloc_fabric_acl [2021-11-25 19:36:14,237 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_alloc_fabric_acl [2021-11-25 19:36:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-25 19:36:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-25 19:36:14,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-25 19:36:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_ioctl [2021-11-25 19:36:14,238 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_ioctl [2021-11-25 19:36:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-25 19:36:14,241 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-25 19:36:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:36:14,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:36:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tport [2021-11-25 19:36:14,243 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tport [2021-11-25 19:36:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-25 19:36:14,244 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-25 19:36:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 19:36:14,244 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 19:36:14,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-25 19:36:14,251 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-25 19:36:14,251 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-25 19:36:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-25 19:36:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:36:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:36:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-25 19:36:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-25 19:36:14,252 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-25 19:36:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:36:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-25 19:36:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-25 19:36:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 19:36:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 19:36:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-25 19:36:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-25 19:36:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-25 19:36:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-25 19:36:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-25 19:36:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-25 19:36:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 19:36:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 19:36:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 19:36:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 19:36:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 19:36:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 19:36:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-25 19:36:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-25 19:36:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-25 19:36:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-25 19:36:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 19:36:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 19:36:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-25 19:36:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-25 19:36:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:36:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:36:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:36:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-25 19:36:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-25 19:36:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:36:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-25 19:36:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-25 19:36:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_cmd [2021-11-25 19:36:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_cmd [2021-11-25 19:36:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_set_default_node_attrs [2021-11-25 19:36:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_set_default_node_attrs [2021-11-25 19:36:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nexus [2021-11-25 19:36:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nexus [2021-11-25 19:36:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-25 19:36:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-25 19:36:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-25 19:36:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:36:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:36:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-25 19:36:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-25 19:36:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 19:36:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 19:36:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-25 19:36:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-25 19:36:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 19:36:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 19:36:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:36:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:36:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_fabric_proto_ident [2021-11-25 19:36:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_fabric_proto_ident [2021-11-25 19:36:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-25 19:36:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-25 19:36:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-11-25 19:36:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-11-25 19:36:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2021-11-25 19:36:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2021-11-25 19:36:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_deregister [2021-11-25 19:36:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_deregister [2021-11-25 19:36:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 19:36:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 19:36:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-25 19:36:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-25 19:36:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_command_size [2021-11-25 19:36:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_command_size [2021-11-25 19:36:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_dump_proto_id [2021-11-25 19:36:14,264 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_dump_proto_id [2021-11-25 19:36:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-25 19:36:14,264 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-25 19:36:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:36:14,264 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:36:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-25 19:36:14,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-25 19:36:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-25 19:36:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-25 19:36:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_clear_endpoint [2021-11-25 19:36:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_clear_endpoint [2021-11-25 19:36:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-25 19:36:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-25 19:36:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-25 19:36:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-25 19:36:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-25 19:36:14,266 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-25 19:36:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:36:14,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:36:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_flush_vq [2021-11-25 19:36:14,266 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_flush_vq [2021-11-25 19:36:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-25 19:36:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-25 19:36:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-25 19:36:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-25 19:36:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-25 19:36:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-25 19:36:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure sas_parse_pr_out_transport_id [2021-11-25 19:36:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_parse_pr_out_transport_id [2021-11-25 19:36:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-25 19:36:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-25 19:36:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure utsname [2021-11-25 19:36:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure utsname [2021-11-25 19:36:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-25 19:36:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-25 19:36:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-25 19:36:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-25 19:36:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-25 19:36:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-25 19:36:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-25 19:36:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-25 19:36:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used [2021-11-25 19:36:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used [2021-11-25 19:36:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 19:36:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 19:36:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 19:36:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 19:36:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-25 19:36:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-25 19:36:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nodeacl [2021-11-25 19:36:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nodeacl [2021-11-25 19:36:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-25 19:36:14,276 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-25 19:36:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-25 19:36:14,276 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-25 19:36:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id_len [2021-11-25 19:36:14,276 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id_len [2021-11-25 19:36:15,374 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:36:15,378 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:36:56,088 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume #t~switch208;#res := ~ret~1; [2021-11-25 19:36:56,088 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !#t~switch208;#t~switch208 := #t~switch208 || 4bv32 == ~size; [2021-11-25 19:36:56,088 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0bv64 != ~tmp___1~4;#res := ~ret~1; [2021-11-25 19:36:56,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0bv64 != ~tmp___1~4);#res := ~ret~1; [2021-11-25 19:36:56,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc #t~switch208; [2021-11-25 19:36:56,089 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 [2021-11-25 19:36:56,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume #t~switch208; [2021-11-25 19:36:56,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !#t~switch208;#t~switch208 := #t~switch208 || 16bv32 == ~size; [2021-11-25 19:36:56,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474-1: ~tmp___0~9 := #t~ret209;havoc #t~ret209; [2021-11-25 19:36:56,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch208;#res := ~ret~1; [2021-11-25 19:36:56,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-1: ~tmp___2~3 := #t~ret211;havoc #t~ret211;#res := ~tmp___2~3[32:0]; [2021-11-25 19:36:56,090 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 [2021-11-25 19:36:56,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch208;#t~switch208 := #t~switch208 || 2bv32 == ~size; [2021-11-25 19:36:56,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume #t~switch208;#res := ~ret~1; [2021-11-25 19:36:56,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !#t~switch208;#t~switch208 := #t~switch208 || 8bv32 == ~size; [2021-11-25 19:36:56,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487-1: ~tmp___1~4 := #t~ret210;havoc #t~ret210; [2021-11-25 19:36:56,091 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 [2021-11-25 19:36:56,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume #t~switch208; [2021-11-25 19:36:56,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !#t~switch208;#t~switch208 := true; [2021-11-25 19:36:56,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0bv64 != ~tmp___0~9;#res := ~ret~1; [2021-11-25 19:36:56,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0bv64 != ~tmp___0~9);#res := ~ret~1; [2021-11-25 19:36:56,092 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume #t~switch208; [2021-11-25 19:36:56,092 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !#t~switch208; [2021-11-25 19:36:56,092 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume #t~switch208;#res := ~ret~1; [2021-11-25 19:36:56,092 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !#t~switch208;#t~switch208 := #t~switch208 || 10bv32 == ~size; [2021-11-25 19:37:14,727 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:37:14,751 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:37:14,751 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:37:14,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:37:14 BoogieIcfgContainer [2021-11-25 19:37:14,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:37:14,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:37:14,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:37:14,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:37:14,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:36:08" (1/3) ... [2021-11-25 19:37:14,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebcbd1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:37:14, skipping insertion in model container [2021-11-25 19:37:14,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:13" (2/3) ... [2021-11-25 19:37:14,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebcbd1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:37:14, skipping insertion in model container [2021-11-25 19:37:14,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:37:14" (3/3) ... [2021-11-25 19:37:14,767 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-25 19:37:14,773 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:37:14,773 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:37:14,864 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:37:14,872 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 [2021-11-25 19:37:14,872 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:37:14,949 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) [2021-11-25 19:37:14,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:37:14,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:14,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:14,957 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:14,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:14,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2087497073, now seen corresponding path program 1 times [2021-11-25 19:37:14,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:14,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170139500] [2021-11-25 19:37:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:14,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:14,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:14,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:14,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:37:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:16,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:37:16,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:37:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:16,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:37:16,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:37:16,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170139500] [2021-11-25 19:37:16,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170139500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:16,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:16,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:37:16,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500153241] [2021-11-25 19:37:16,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:16,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:16,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:37:16,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:16,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:16,503 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 4.0) 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) [2021-11-25 19:37:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:17,046 INFO L93 Difference]: Finished difference Result 4788 states and 7060 transitions. [2021-11-25 19:37:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:17,052 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 [2021-11-25 19:37:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:17,090 INFO L225 Difference]: With dead ends: 4788 [2021-11-25 19:37:17,090 INFO L226 Difference]: Without dead ends: 2391 [2021-11-25 19:37:17,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:17,119 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 [2021-11-25 19:37:17,121 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] [2021-11-25 19:37:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-11-25 19:37:17,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2391. [2021-11-25 19:37:17,424 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) [2021-11-25 19:37:17,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 3462 transitions. [2021-11-25 19:37:17,457 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 3462 transitions. Word has length 15 [2021-11-25 19:37:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:17,459 INFO L470 AbstractCegarLoop]: Abstraction has 2391 states and 3462 transitions. [2021-11-25 19:37:17,459 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) [2021-11-25 19:37:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 3462 transitions. [2021-11-25 19:37:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:37:17,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:17,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:17,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:37:17,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:37:17,687 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:17,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:17,688 INFO L85 PathProgramCache]: Analyzing trace with hash 286775544, now seen corresponding path program 1 times [2021-11-25 19:37:17,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:17,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091260466] [2021-11-25 19:37:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:17,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:17,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:17,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:17,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:37:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:18,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:37:18,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:37:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:18,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:37:18,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:37:18,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091260466] [2021-11-25 19:37:18,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091260466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:18,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:18,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:37:18,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742236327] [2021-11-25 19:37:18,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:18,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:18,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:37:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:18,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:18,954 INFO L87 Difference]: Start difference. First operand 2391 states and 3462 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) [2021-11-25 19:37:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:19,282 INFO L93 Difference]: Finished difference Result 2393 states and 3463 transitions. [2021-11-25 19:37:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:19,283 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 [2021-11-25 19:37:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:19,305 INFO L225 Difference]: With dead ends: 2393 [2021-11-25 19:37:19,305 INFO L226 Difference]: Without dead ends: 2390 [2021-11-25 19:37:19,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:19,313 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:19,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 3459 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:37:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-11-25 19:37:19,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2390. [2021-11-25 19:37:19,465 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) [2021-11-25 19:37:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3460 transitions. [2021-11-25 19:37:19,488 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3460 transitions. Word has length 16 [2021-11-25 19:37:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:19,489 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 3460 transitions. [2021-11-25 19:37:19,489 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) [2021-11-25 19:37:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3460 transitions. [2021-11-25 19:37:19,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 19:37:19,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:19,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:19,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:37:19,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:37:19,707 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash 298987860, now seen corresponding path program 1 times [2021-11-25 19:37:19,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:19,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533274867] [2021-11-25 19:37:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:19,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:19,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:19,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:19,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:37:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:20,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:37:20,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:37:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:20,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:37:20,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:37:20,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533274867] [2021-11-25 19:37:20,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533274867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:20,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:20,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:37:20,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174622655] [2021-11-25 19:37:20,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:20,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:20,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:37:20,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:20,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:20,993 INFO L87 Difference]: Start difference. First operand 2390 states and 3460 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) [2021-11-25 19:37:21,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:21,348 INFO L93 Difference]: Finished difference Result 2392 states and 3461 transitions. [2021-11-25 19:37:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:21,348 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 [2021-11-25 19:37:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:21,370 INFO L225 Difference]: With dead ends: 2392 [2021-11-25 19:37:21,370 INFO L226 Difference]: Without dead ends: 2389 [2021-11-25 19:37:21,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:21,377 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 [2021-11-25 19:37:21,378 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] [2021-11-25 19:37:21,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-25 19:37:21,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2389. [2021-11-25 19:37:21,547 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) [2021-11-25 19:37:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3458 transitions. [2021-11-25 19:37:21,570 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3458 transitions. Word has length 17 [2021-11-25 19:37:21,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:21,570 INFO L470 AbstractCegarLoop]: Abstraction has 2389 states and 3458 transitions. [2021-11-25 19:37:21,571 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) [2021-11-25 19:37:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3458 transitions. [2021-11-25 19:37:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 19:37:21,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:21,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:21,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:37:21,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:37:21,795 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash 677574523, now seen corresponding path program 1 times [2021-11-25 19:37:21,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:21,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864756919] [2021-11-25 19:37:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:21,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:21,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:21,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:21,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:37:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:23,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:37:23,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:37:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:23,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:37:23,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:37:23,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864756919] [2021-11-25 19:37:23,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864756919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:23,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:23,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:37:23,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584476596] [2021-11-25 19:37:23,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:23,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:23,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:37:23,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:23,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:23,290 INFO L87 Difference]: Start difference. First operand 2389 states and 3458 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) [2021-11-25 19:37:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:23,790 INFO L93 Difference]: Finished difference Result 5075 states and 7243 transitions. [2021-11-25 19:37:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:23,791 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 [2021-11-25 19:37:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:23,814 INFO L225 Difference]: With dead ends: 5075 [2021-11-25 19:37:23,814 INFO L226 Difference]: Without dead ends: 2730 [2021-11-25 19:37:23,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:23,830 INFO L933 BasicCegarLoop]: 3599 mSDtfsCounter, 1868 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2021-11-25 19:37:23,833 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] [2021-11-25 19:37:23,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-25 19:37:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2727. [2021-11-25 19:37:24,052 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) [2021-11-25 19:37:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3837 transitions. [2021-11-25 19:37:24,072 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3837 transitions. Word has length 18 [2021-11-25 19:37:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:24,073 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 3837 transitions. [2021-11-25 19:37:24,073 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) [2021-11-25 19:37:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3837 transitions. [2021-11-25 19:37:24,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 19:37:24,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:24,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:24,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:37:24,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:37:24,295 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:24,295 INFO L85 PathProgramCache]: Analyzing trace with hash -471135945, now seen corresponding path program 1 times [2021-11-25 19:37:24,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:24,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687268922] [2021-11-25 19:37:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:24,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:24,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:24,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:24,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 19:37:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:25,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:37:25,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:37:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:25,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:37:25,535 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:37:25,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687268922] [2021-11-25 19:37:25,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687268922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:25,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:25,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:37:25,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950846562] [2021-11-25 19:37:25,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:25,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:25,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:37:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:25,537 INFO L87 Difference]: Start difference. First operand 2727 states and 3837 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, (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) [2021-11-25 19:37:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:25,903 INFO L93 Difference]: Finished difference Result 2756 states and 3860 transitions. [2021-11-25 19:37:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:25,904 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, (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 19 [2021-11-25 19:37:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:25,934 INFO L225 Difference]: With dead ends: 2756 [2021-11-25 19:37:25,934 INFO L226 Difference]: Without dead ends: 2752 [2021-11-25 19:37:25,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:25,938 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:25,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3370 Valid, 3536 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:37:25,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-11-25 19:37:26,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2748. [2021-11-25 19:37:26,164 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) [2021-11-25 19:37:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3852 transitions. [2021-11-25 19:37:26,199 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3852 transitions. Word has length 19 [2021-11-25 19:37:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:26,200 INFO L470 AbstractCegarLoop]: Abstraction has 2748 states and 3852 transitions. [2021-11-25 19:37:26,201 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, (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) [2021-11-25 19:37:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3852 transitions. [2021-11-25 19:37:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 19:37:26,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:26,207 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] [2021-11-25 19:37:26,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:37:26,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:37:26,427 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:26,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:26,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1721417218, now seen corresponding path program 1 times [2021-11-25 19:37:26,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:26,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082651414] [2021-11-25 19:37:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:26,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:26,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:26,432 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:26,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 19:37:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:27,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:37:27,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:37:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:27,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:37:27,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:37:27,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082651414] [2021-11-25 19:37:27,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082651414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:27,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:27,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:37:27,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768688442] [2021-11-25 19:37:27,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:27,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:27,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:37:27,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:27,965 INFO L87 Difference]: Start difference. First operand 2748 states and 3852 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, (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) [2021-11-25 19:37:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:28,383 INFO L93 Difference]: Finished difference Result 2767 states and 3870 transitions. [2021-11-25 19:37:28,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:28,384 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, (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 20 [2021-11-25 19:37:28,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:28,407 INFO L225 Difference]: With dead ends: 2767 [2021-11-25 19:37:28,407 INFO L226 Difference]: Without dead ends: 2743 [2021-11-25 19:37:28,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:28,411 INFO L933 BasicCegarLoop]: 3450 mSDtfsCounter, 3366 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:28,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3366 Valid, 3528 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:37:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2021-11-25 19:37:28,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 2741. [2021-11-25 19:37:28,737 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) [2021-11-25 19:37:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3835 transitions. [2021-11-25 19:37:28,758 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3835 transitions. Word has length 20 [2021-11-25 19:37:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:28,759 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3835 transitions. [2021-11-25 19:37:28,759 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, (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) [2021-11-25 19:37:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3835 transitions. [2021-11-25 19:37:28,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:37:28,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:28,770 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] [2021-11-25 19:37:28,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:37:28,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:37:28,995 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:28,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:28,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1582543105, now seen corresponding path program 1 times [2021-11-25 19:37:28,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:28,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252408581] [2021-11-25 19:37:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:28,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:28,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:29,000 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:29,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 19:37:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:30,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:37:30,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:37:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:30,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:37:30,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:37:30,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252408581] [2021-11-25 19:37:30,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252408581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:30,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:30,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:37:30,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205766165] [2021-11-25 19:37:30,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:30,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:37:30,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:37:30,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:37:30,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:37:30,601 INFO L87 Difference]: Start difference. First operand 2741 states and 3835 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:37:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:31,502 INFO L93 Difference]: Finished difference Result 5431 states and 7605 transitions. [2021-11-25 19:37:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:37:31,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 2 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 50 [2021-11-25 19:37:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:31,525 INFO L225 Difference]: With dead ends: 5431 [2021-11-25 19:37:31,526 INFO L226 Difference]: Without dead ends: 2741 [2021-11-25 19:37:31,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:37:31,542 INFO L933 BasicCegarLoop]: 3418 mSDtfsCounter, 5 mSDsluCounter, 10241 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 13659 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:31,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 13659 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:37:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2021-11-25 19:37:31,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 2741. [2021-11-25 19:37:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1892 states have (on average 1.312367864693446) internal successors, (2483), 1939 states have internal predecessors, (2483), 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) [2021-11-25 19:37:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3834 transitions. [2021-11-25 19:37:31,790 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3834 transitions. Word has length 50 [2021-11-25 19:37:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:31,792 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3834 transitions. [2021-11-25 19:37:31,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:37:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3834 transitions. [2021-11-25 19:37:31,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 19:37:31,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:31,799 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:31,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:37:32,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:37:32,015 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:32,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:32,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1370933971, now seen corresponding path program 1 times [2021-11-25 19:37:32,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:32,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667929148] [2021-11-25 19:37:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:32,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:32,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:32,020 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:32,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 19:37:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:33,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:37:33,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:37:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:34,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:37:34,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:37:34,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667929148] [2021-11-25 19:37:34,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667929148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:34,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:34,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:37:34,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747598117] [2021-11-25 19:37:34,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:34,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:37:34,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:37:34,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:37:34,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:37:34,037 INFO L87 Difference]: Start difference. First operand 2741 states and 3834 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-25 19:37:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:34,769 INFO L93 Difference]: Finished difference Result 5430 states and 7603 transitions. [2021-11-25 19:37:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:37:34,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 60 [2021-11-25 19:37:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:34,795 INFO L225 Difference]: With dead ends: 5430 [2021-11-25 19:37:34,795 INFO L226 Difference]: Without dead ends: 2730 [2021-11-25 19:37:34,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:37:34,809 INFO L933 BasicCegarLoop]: 3417 mSDtfsCounter, 6 mSDsluCounter, 10236 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13653 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:34,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 13653 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:37:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-25 19:37:35,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2730. [2021-11-25 19:37:35,005 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) [2021-11-25 19:37:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3821 transitions. [2021-11-25 19:37:35,023 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3821 transitions. Word has length 60 [2021-11-25 19:37:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:35,024 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3821 transitions. [2021-11-25 19:37:35,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-25 19:37:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3821 transitions. [2021-11-25 19:37:35,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-25 19:37:35,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:35,030 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] [2021-11-25 19:37:35,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:37:35,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:37:35,254 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2076299757, now seen corresponding path program 1 times [2021-11-25 19:37:35,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:35,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853345010] [2021-11-25 19:37:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:35,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:35,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:35,259 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:35,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 19:37:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:36,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:37:36,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:37:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:37:37,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:37:37,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:37:37,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853345010] [2021-11-25 19:37:37,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853345010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:37,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:37,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:37:37,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520292477] [2021-11-25 19:37:37,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:37,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:37:37,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:37:37,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:37:37,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:37:37,255 INFO L87 Difference]: Start difference. First operand 2730 states and 3821 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:37:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:38,022 INFO L93 Difference]: Finished difference Result 5421 states and 7592 transitions. [2021-11-25 19:37:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:37:38,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2021-11-25 19:37:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:38,055 INFO L225 Difference]: With dead ends: 5421 [2021-11-25 19:37:38,055 INFO L226 Difference]: Without dead ends: 2730 [2021-11-25 19:37:38,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:37:38,073 INFO L933 BasicCegarLoop]: 3405 mSDtfsCounter, 3 mSDsluCounter, 6800 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:38,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 10205 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:37:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-25 19:37:38,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2730. [2021-11-25 19:37:38,376 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) [2021-11-25 19:37:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3820 transitions. [2021-11-25 19:37:38,393 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3820 transitions. Word has length 84 [2021-11-25 19:37:38,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:38,394 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3820 transitions. [2021-11-25 19:37:38,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:37:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3820 transitions. [2021-11-25 19:37:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 19:37:38,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:38,398 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] [2021-11-25 19:37:38,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:37:38,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:37:38,618 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:38,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:38,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1123746407, now seen corresponding path program 1 times [2021-11-25 19:37:38,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:38,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441543152] [2021-11-25 19:37:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:38,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:38,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:38,623 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:38,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 19:37:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:39,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:37:39,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:37:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:37:42,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:37:42,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:37:42,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441543152] [2021-11-25 19:37:42,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441543152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:42,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:42,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 19:37:42,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095831664] [2021-11-25 19:37:42,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:42,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:37:42,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:37:42,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:37:42,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:37:42,075 INFO L87 Difference]: Start difference. First operand 2730 states and 3820 transitions. Second operand has 12 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-25 19:37:46,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:37:57,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:57,645 INFO L93 Difference]: Finished difference Result 5435 states and 7615 transitions. [2021-11-25 19:37:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:37:57,646 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 87 [2021-11-25 19:37:57,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:57,688 INFO L225 Difference]: With dead ends: 5435 [2021-11-25 19:37:57,689 INFO L226 Difference]: Without dead ends: 2739 [2021-11-25 19:37:57,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:37:57,702 INFO L933 BasicCegarLoop]: 3281 mSDtfsCounter, 2 mSDsluCounter, 32661 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35942 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:57,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 35942 Invalid, 1506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 1500 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2021-11-25 19:37:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-11-25 19:37:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2737. [2021-11-25 19:37:57,958 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) [2021-11-25 19:37:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 3833 transitions. [2021-11-25 19:37:57,973 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 3833 transitions. Word has length 87 [2021-11-25 19:37:57,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:57,975 INFO L470 AbstractCegarLoop]: Abstraction has 2737 states and 3833 transitions. [2021-11-25 19:37:57,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-25 19:37:57,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 3833 transitions. [2021-11-25 19:37:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 19:37:57,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:57,980 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] [2021-11-25 19:37:58,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:37:58,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:37:58,194 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1429527131, now seen corresponding path program 1 times [2021-11-25 19:37:58,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:37:58,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628075612] [2021-11-25 19:37:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:58,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:37:58,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:37:58,197 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:37:58,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 19:37:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:59,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-25 19:37:59,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:38:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:38:05,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:38:05,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:38:05,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628075612] [2021-11-25 19:38:05,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628075612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:05,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:05,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-25 19:38:05,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576389893] [2021-11-25 19:38:05,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:05,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 19:38:05,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:38:05,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 19:38:05,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:38:05,255 INFO L87 Difference]: Start difference. First operand 2737 states and 3833 transitions. Second operand has 20 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 5 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-25 19:38:12,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:33,888 INFO L93 Difference]: Finished difference Result 5432 states and 7615 transitions. [2021-11-25 19:38:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 19:38:33,890 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 5 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 87 [2021-11-25 19:38:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:33,916 INFO L225 Difference]: With dead ends: 5432 [2021-11-25 19:38:33,916 INFO L226 Difference]: Without dead ends: 2734 [2021-11-25 19:38:33,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:38:33,931 INFO L933 BasicCegarLoop]: 3278 mSDtfsCounter, 13 mSDsluCounter, 52273 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 55551 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:33,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 55551 Invalid, 2444 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2155 Invalid, 1 Unknown, 276 Unchecked, 23.9s Time] [2021-11-25 19:38:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-11-25 19:38:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2725. [2021-11-25 19:38:34,136 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) [2021-11-25 19:38:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 3814 transitions. [2021-11-25 19:38:34,152 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 3814 transitions. Word has length 87 [2021-11-25 19:38:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:34,152 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 3814 transitions. [2021-11-25 19:38:34,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 5 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-25 19:38:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 3814 transitions. [2021-11-25 19:38:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 19:38:34,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:34,164 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] [2021-11-25 19:38:34,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:38:34,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:38:34,390 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash 239581160, now seen corresponding path program 1 times [2021-11-25 19:38:34,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:38:34,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043516519] [2021-11-25 19:38:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:34,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:38:34,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:38:34,395 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:38:34,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 19:38:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:36,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:38:36,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:38:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:38:36,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:38:36,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:38:36,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043516519] [2021-11-25 19:38:36,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043516519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:36,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:36,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:36,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255144876] [2021-11-25 19:38:36,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:36,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:36,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:38:36,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:36,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:36,584 INFO L87 Difference]: Start difference. First operand 2725 states and 3814 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:38:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:36,879 INFO L93 Difference]: Finished difference Result 3012 states and 4136 transitions. [2021-11-25 19:38:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:36,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2021-11-25 19:38:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:36,900 INFO L225 Difference]: With dead ends: 3012 [2021-11-25 19:38:36,900 INFO L226 Difference]: Without dead ends: 2518 [2021-11-25 19:38:36,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:36,905 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 [2021-11-25 19:38:36,906 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] [2021-11-25 19:38:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-25 19:38:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2021-11-25 19:38:37,166 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) [2021-11-25 19:38:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3484 transitions. [2021-11-25 19:38:37,179 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3484 transitions. Word has length 88 [2021-11-25 19:38:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:37,180 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3484 transitions. [2021-11-25 19:38:37,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:38:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3484 transitions. [2021-11-25 19:38:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-25 19:38:37,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:37,188 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] [2021-11-25 19:38:37,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:38:37,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:38:37,414 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:37,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:37,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1012007465, now seen corresponding path program 1 times [2021-11-25 19:38:37,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:38:37,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453588018] [2021-11-25 19:38:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:37,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:38:37,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:38:37,419 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:38:37,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 19:38:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:39,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:38:39,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:38:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:38:39,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:38:39,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:38:39,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453588018] [2021-11-25 19:38:39,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453588018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:39,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:39,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:39,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692387608] [2021-11-25 19:38:39,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:39,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:39,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:38:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:39,944 INFO L87 Difference]: Start difference. First operand 2516 states and 3484 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-11-25 19:38:40,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:40,125 INFO L93 Difference]: Finished difference Result 5021 states and 6977 transitions. [2021-11-25 19:38:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:40,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 106 [2021-11-25 19:38:40,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:40,141 INFO L225 Difference]: With dead ends: 5021 [2021-11-25 19:38:40,142 INFO L226 Difference]: Without dead ends: 2518 [2021-11-25 19:38:40,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:40,156 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 [2021-11-25 19:38:40,156 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] [2021-11-25 19:38:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-25 19:38:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2021-11-25 19:38:40,352 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) [2021-11-25 19:38:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3478 transitions. [2021-11-25 19:38:40,365 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3478 transitions. Word has length 106 [2021-11-25 19:38:40,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:40,366 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3478 transitions. [2021-11-25 19:38:40,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-11-25 19:38:40,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3478 transitions. [2021-11-25 19:38:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-25 19:38:40,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:40,375 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, 1, 1, 1] [2021-11-25 19:38:40,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:38:40,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:38:40,598 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:40,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:40,599 INFO L85 PathProgramCache]: Analyzing trace with hash -238240565, now seen corresponding path program 1 times [2021-11-25 19:38:40,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:38:40,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287421309] [2021-11-25 19:38:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:40,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:38:40,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:38:40,602 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:38:40,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40430fb2-1133-44c1-b8cc-20e4c04f8b15/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process