./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:53:47,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:53:47,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:53:47,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:53:47,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:53:47,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:53:47,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:53:47,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:53:47,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:53:47,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:53:47,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:53:47,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:53:47,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:53:47,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:53:47,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:53:47,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:53:47,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:53:47,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:53:47,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:53:47,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:53:47,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:53:47,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:53:47,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:53:47,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:53:47,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:53:47,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:53:47,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:53:47,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:53:47,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:53:47,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:53:47,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:53:47,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:53:47,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:53:47,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:53:47,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:53:47,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:53:47,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:53:47,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:53:47,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:53:47,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:53:47,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:53:47,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:53:47,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:53:47,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:53:47,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:53:47,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:53:47,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:53:47,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:53:47,240 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:53:47,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:53:47,240 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:53:47,240 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:53:47,241 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:53:47,242 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:53:47,242 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:53:47,242 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:53:47,243 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:53:47,243 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:53:47,243 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:53:47,243 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:53:47,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:53:47,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:53:47,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:53:47,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:53:47,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:53:47,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:53:47,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:53:47,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:53:47,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:53:47,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:53:47,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:53:47,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:53:47,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:53:47,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:53:47,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:53:47,248 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:53:47,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:53:47,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:53:47,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:53:47,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:53:47,249 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_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-11-21 00:53:47,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:53:47,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:53:47,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:53:47,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:53:47,556 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:53:47,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-21 00:53:47,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/data/c2e70510d/a5e202f821794bec9d22987a63259be9/FLAG09ee85e2a [2021-11-21 00:53:48,582 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:53:48,582 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-21 00:53:48,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/data/c2e70510d/a5e202f821794bec9d22987a63259be9/FLAG09ee85e2a [2021-11-21 00:53:48,970 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/data/c2e70510d/a5e202f821794bec9d22987a63259be9 [2021-11-21 00:53:48,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:53:48,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:53:48,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:53:48,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:53:48,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:53:48,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:53:48" (1/1) ... [2021-11-21 00:53:48,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531248e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:48, skipping insertion in model container [2021-11-21 00:53:48,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:53:48" (1/1) ... [2021-11-21 00:53:48,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:53:49,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:53:51,667 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_f3587e50-ed18-420a-bf43-b659c845a871/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-21 00:53:51,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:53:51,815 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:53:52,330 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_f3587e50-ed18-420a-bf43-b659c845a871/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-21 00:53:52,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:53:52,447 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:53:52,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52 WrapperNode [2021-11-21 00:53:52,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:53:52,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:53:52,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:53:52,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:53:52,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (1/1) ... [2021-11-21 00:53:52,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (1/1) ... [2021-11-21 00:53:52,880 INFO L137 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6648 [2021-11-21 00:53:52,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:53:52,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:53:52,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:53:52,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:53:52,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (1/1) ... [2021-11-21 00:53:52,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (1/1) ... [2021-11-21 00:53:52,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (1/1) ... [2021-11-21 00:53:52,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (1/1) ... [2021-11-21 00:53:53,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (1/1) ... [2021-11-21 00:53:53,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (1/1) ... [2021-11-21 00:53:53,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (1/1) ... [2021-11-21 00:53:53,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:53:53,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:53:53,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:53:53,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:53:53,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (1/1) ... [2021-11-21 00:53:53,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:53:53,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:53:53,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:53:53,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:53:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-11-21 00:53:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-11-21 00:53:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-11-21 00:53:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-11-21 00:53:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-11-21 00:53:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-11-21 00:53:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-21 00:53:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-21 00:53:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-21 00:53:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-21 00:53:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-21 00:53:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-21 00:53:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:53:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-21 00:53:53,306 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-21 00:53:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:53:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-21 00:53:53,306 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-21 00:53:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-11-21 00:53:53,307 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-11-21 00:53:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-21 00:53:53,307 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-21 00:53:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-11-21 00:53:53,307 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-11-21 00:53:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-21 00:53:53,308 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-21 00:53:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-21 00:53:53,308 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-21 00:53:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-21 00:53:53,308 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-21 00:53:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-21 00:53:53,309 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-21 00:53:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:53:53,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:53:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-21 00:53:53,309 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-21 00:53:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 00:53:53,310 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 00:53:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-21 00:53:53,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-21 00:53:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-21 00:53:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 00:53:53,311 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 00:53:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-11-21 00:53:53,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-11-21 00:53:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-11-21 00:53:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-11-21 00:53:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-21 00:53:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-21 00:53:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-11-21 00:53:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-11-21 00:53:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-11-21 00:53:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-11-21 00:53:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2021-11-21 00:53:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2021-11-21 00:53:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-21 00:53:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-21 00:53:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:53:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:53:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-21 00:53:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-21 00:53:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-21 00:53:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-21 00:53:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-11-21 00:53:53,317 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-11-21 00:53:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:53:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:53:53,317 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:53:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-21 00:53:53,317 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-21 00:53:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-11-21 00:53:53,318 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-11-21 00:53:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:53:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:53:53,319 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:53:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-21 00:53:53,319 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-21 00:53:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-11-21 00:53:53,319 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-11-21 00:53:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:53:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:53:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-21 00:53:53,385 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-21 00:53:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-11-21 00:53:53,385 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-11-21 00:53:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 00:53:53,385 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 00:53:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-11-21 00:53:53,386 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-11-21 00:53:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-11-21 00:53:53,386 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-11-21 00:53:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-21 00:53:53,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-21 00:53:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-21 00:53:53,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-21 00:53:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:53:53,386 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:53:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-21 00:53:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-21 00:53:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 00:53:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 00:53:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-21 00:53:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-21 00:53:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-11-21 00:53:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-11-21 00:53:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-11-21 00:53:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-11-21 00:53:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-21 00:53:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-21 00:53:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-21 00:53:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-21 00:53:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:53:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 00:53:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 00:53:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-21 00:53:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-21 00:53:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 00:53:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 00:53:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:53:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-21 00:53:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-21 00:53:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:53:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-21 00:53:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-21 00:53:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-21 00:53:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-21 00:53:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-11-21 00:53:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-11-21 00:53:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-21 00:53:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-21 00:53:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:53:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:53:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-21 00:53:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-11-21 00:53:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-11-21 00:53:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:53:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-21 00:53:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-21 00:53:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-21 00:53:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-21 00:53:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-21 00:53:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-21 00:53:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-21 00:53:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-21 00:53:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-21 00:53:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-21 00:53:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-11-21 00:53:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-11-21 00:53:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-11-21 00:53:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-11-21 00:53:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-21 00:53:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-21 00:53:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-21 00:53:53,394 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-21 00:53:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-21 00:53:53,394 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-21 00:53:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:53:53,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:53:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-11-21 00:53:53,394 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-11-21 00:53:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-21 00:53:53,394 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-21 00:53:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:53:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-21 00:53:53,395 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-21 00:53:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-21 00:53:53,395 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-21 00:53:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-11-21 00:53:53,395 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-11-21 00:53:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:53:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-21 00:53:53,395 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-21 00:53:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-11-21 00:53:53,396 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-11-21 00:53:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-21 00:53:53,396 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-21 00:53:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:53:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-21 00:53:53,396 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-21 00:53:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:53:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-21 00:53:53,396 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-21 00:53:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:53:53,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:53:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-21 00:53:53,405 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-21 00:53:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-21 00:53:53,405 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-21 00:53:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-21 00:53:53,406 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-21 00:53:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-21 00:53:53,406 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-21 00:53:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 00:53:53,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 00:53:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2021-11-21 00:53:53,407 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2021-11-21 00:53:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 00:53:53,407 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 00:53:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-21 00:53:53,407 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-21 00:53:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-21 00:53:53,408 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-21 00:53:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:53:53,408 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:53:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-21 00:53:53,408 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-21 00:53:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-11-21 00:53:53,408 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-11-21 00:53:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-21 00:53:53,409 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-21 00:53:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-21 00:53:53,409 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-21 00:53:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-21 00:53:53,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-21 00:53:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 00:53:53,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 00:53:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-21 00:53:53,411 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-21 00:53:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-21 00:53:53,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-21 00:53:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:53:53,412 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:53:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-21 00:53:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-21 00:53:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:53:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-11-21 00:53:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-11-21 00:53:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-11-21 00:53:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-11-21 00:53:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-21 00:53:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-21 00:53:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:53:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:53:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 00:53:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 00:53:54,337 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:53:54,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:53:59,088 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-11-21 00:53:59,088 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: assume -9223372036854775808 <= __copy_to_user_#t~ret139#1 && __copy_to_user_#t~ret139#1 <= 9223372036854775807;__copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2021-11-21 00:53:59,088 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-11-21 00:53:59,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: assume -9223372036854775808 <= __copy_to_user_#t~ret138#1 && __copy_to_user_#t~ret138#1 <= 9223372036854775807;__copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2021-11-21 00:53:59,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-11-21 00:53:59,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-11-21 00:53:59,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:53:59,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:53:59,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-11-21 00:53:59,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-11-21 00:53:59,089 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-11-21 00:53:59,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:53:59,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:53:59,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-11-21 00:53:59,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16 == __copy_to_user_~size#1; [2021-11-21 00:53:59,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:53:59,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10 == __copy_to_user_~size#1; [2021-11-21 00:53:59,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2021-11-21 00:53:59,090 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:53:59,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8 == __copy_to_user_~size#1; [2021-11-21 00:53:59,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := (if __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 else __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-21 00:53:59,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:53:59,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4 == __copy_to_user_~size#1; [2021-11-21 00:53:59,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:53:59,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2 == __copy_to_user_~size#1; [2021-11-21 00:54:02,305 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2021-11-21 00:54:02,305 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: assume -9223372036854775808 <= __copy_from_user_#t~ret133#1 && __copy_from_user_#t~ret133#1 <= 9223372036854775807;__copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2021-11-21 00:54:02,305 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:02,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:02,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-11-21 00:54:02,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-11-21 00:54:02,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-11-21 00:54:02,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2021-11-21 00:54:02,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: assume -9223372036854775808 <= __copy_from_user_#t~ret134#1 && __copy_from_user_#t~ret134#1 <= 9223372036854775807;__copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2021-11-21 00:54:02,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:02,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:02,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:02,307 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4 == __copy_from_user_~size#1; [2021-11-21 00:54:02,307 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:02,307 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8 == __copy_from_user_~size#1; [2021-11-21 00:54:02,307 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2 == __copy_from_user_~size#1; [2021-11-21 00:54:02,307 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:02,307 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-11-21 00:54:02,307 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-11-21 00:54:02,307 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-21 00:54:02,307 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2021-11-21 00:54:02,307 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:02,308 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10 == __copy_from_user_~size#1; [2021-11-21 00:54:02,308 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-11-21 00:54:02,308 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16 == __copy_from_user_~size#1; [2021-11-21 00:54:03,430 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:54:04,882 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:54:04,882 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:54:04,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:54:04 BoogieIcfgContainer [2021-11-21 00:54:04,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:54:04,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:54:04,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:54:04,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:54:04,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:53:48" (1/3) ... [2021-11-21 00:54:04,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3426e32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:54:04, skipping insertion in model container [2021-11-21 00:54:04,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:53:52" (2/3) ... [2021-11-21 00:54:04,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3426e32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:54:04, skipping insertion in model container [2021-11-21 00:54:04,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:54:04" (3/3) ... [2021-11-21 00:54:04,900 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-21 00:54:04,908 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:54:04,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:54:04,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:54:04,994 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 [2021-11-21 00:54:04,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:54:05,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 1814 states, 1125 states have (on average 1.3217777777777777) internal successors, (1487), 1171 states have internal predecessors, (1487), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) [2021-11-21 00:54:05,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:54:05,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:05,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:05,070 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:54:05,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1664661916, now seen corresponding path program 1 times [2021-11-21 00:54:05,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:05,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824274808] [2021-11-21 00:54:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:05,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:54:05,550 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:05,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824274808] [2021-11-21 00:54:05,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824274808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:05,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:05,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:05,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693613365] [2021-11-21 00:54:05,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:05,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:54:05,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:05,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:54:05,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:05,592 INFO L87 Difference]: Start difference. First operand has 1814 states, 1125 states have (on average 1.3217777777777777) internal successors, (1487), 1171 states have internal predecessors, (1487), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-21 00:54:07,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:54:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:08,677 INFO L93 Difference]: Finished difference Result 3622 states and 5351 transitions. [2021-11-21 00:54:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:54:08,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 10 [2021-11-21 00:54:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:08,711 INFO L225 Difference]: With dead ends: 3622 [2021-11-21 00:54:08,712 INFO L226 Difference]: Without dead ends: 1806 [2021-11-21 00:54:08,741 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 [2021-11-21 00:54:08,748 INFO L933 BasicCegarLoop]: 2411 mSDtfsCounter, 2628 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:08,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2630 Valid, 2411 Invalid, 225 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:54:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-11-21 00:54:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1806. [2021-11-21 00:54:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1120 states have (on average 1.3169642857142858) internal successors, (1475), 1163 states have internal predecessors, (1475), 578 states have call successors, (578), 108 states have call predecessors, (578), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-21 00:54:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2626 transitions. [2021-11-21 00:54:09,038 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2626 transitions. Word has length 10 [2021-11-21 00:54:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:09,039 INFO L470 AbstractCegarLoop]: Abstraction has 1806 states and 2626 transitions. [2021-11-21 00:54:09,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-21 00:54:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2626 transitions. [2021-11-21 00:54:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:54:09,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:09,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:09,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:54:09,044 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:54:09,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash -65941382, now seen corresponding path program 1 times [2021-11-21 00:54:09,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:09,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813933108] [2021-11-21 00:54:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:09,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:54:09,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:09,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813933108] [2021-11-21 00:54:09,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813933108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:09,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:09,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:09,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219465501] [2021-11-21 00:54:09,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:09,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:54:09,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:09,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:54:09,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:09,191 INFO L87 Difference]: Start difference. First operand 1806 states and 2626 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-21 00:54:11,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:54:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:11,887 INFO L93 Difference]: Finished difference Result 1808 states and 2627 transitions. [2021-11-21 00:54:11,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:54:11,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 11 [2021-11-21 00:54:11,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:11,903 INFO L225 Difference]: With dead ends: 1808 [2021-11-21 00:54:11,904 INFO L226 Difference]: Without dead ends: 1805 [2021-11-21 00:54:11,906 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 [2021-11-21 00:54:11,907 INFO L933 BasicCegarLoop]: 2400 mSDtfsCounter, 2615 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:11,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2617 Valid, 2400 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 00:54:11,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2021-11-21 00:54:12,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1805. [2021-11-21 00:54:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1120 states have (on average 1.3160714285714286) internal successors, (1474), 1162 states have internal predecessors, (1474), 577 states have call successors, (577), 108 states have call predecessors, (577), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-21 00:54:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2624 transitions. [2021-11-21 00:54:12,033 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2624 transitions. Word has length 11 [2021-11-21 00:54:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:12,034 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 2624 transitions. [2021-11-21 00:54:12,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-21 00:54:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2624 transitions. [2021-11-21 00:54:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:54:12,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:12,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:12,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:54:12,036 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:54:12,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:12,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2045207513, now seen corresponding path program 1 times [2021-11-21 00:54:12,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:12,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364645665] [2021-11-21 00:54:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:12,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:54:12,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:12,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364645665] [2021-11-21 00:54:12,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364645665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:12,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:12,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:12,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140065682] [2021-11-21 00:54:12,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:12,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:54:12,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:12,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:54:12,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:12,118 INFO L87 Difference]: Start difference. First operand 1805 states and 2624 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-21 00:54:14,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:54:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:14,892 INFO L93 Difference]: Finished difference Result 1807 states and 2625 transitions. [2021-11-21 00:54:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:54:14,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 12 [2021-11-21 00:54:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:14,902 INFO L225 Difference]: With dead ends: 1807 [2021-11-21 00:54:14,903 INFO L226 Difference]: Without dead ends: 1804 [2021-11-21 00:54:14,904 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 [2021-11-21 00:54:14,907 INFO L933 BasicCegarLoop]: 2398 mSDtfsCounter, 2612 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:14,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2614 Valid, 2398 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:54:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2021-11-21 00:54:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1804. [2021-11-21 00:54:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1120 states have (on average 1.3151785714285715) internal successors, (1473), 1161 states have internal predecessors, (1473), 576 states have call successors, (576), 108 states have call predecessors, (576), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-21 00:54:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2622 transitions. [2021-11-21 00:54:15,145 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2622 transitions. Word has length 12 [2021-11-21 00:54:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:15,146 INFO L470 AbstractCegarLoop]: Abstraction has 1804 states and 2622 transitions. [2021-11-21 00:54:15,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-21 00:54:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2622 transitions. [2021-11-21 00:54:15,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:54:15,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:15,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:15,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:54:15,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:54:15,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1022056733, now seen corresponding path program 1 times [2021-11-21 00:54:15,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:15,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721641692] [2021-11-21 00:54:15,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:15,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:54:15,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:15,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721641692] [2021-11-21 00:54:15,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721641692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:15,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:15,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:15,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653985468] [2021-11-21 00:54:15,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:15,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:54:15,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:15,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:54:15,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:15,238 INFO L87 Difference]: Start difference. First operand 1804 states and 2622 transitions. 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) [2021-11-21 00:54:17,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:54:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:18,391 INFO L93 Difference]: Finished difference Result 4135 states and 5979 transitions. [2021-11-21 00:54:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:54:18,392 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 [2021-11-21 00:54:18,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:18,412 INFO L225 Difference]: With dead ends: 4135 [2021-11-21 00:54:18,412 INFO L226 Difference]: Without dead ends: 2328 [2021-11-21 00:54:18,423 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 [2021-11-21 00:54:18,424 INFO L933 BasicCegarLoop]: 2757 mSDtfsCounter, 1045 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 4805 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:18,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 4805 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 471 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 00:54:18,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-11-21 00:54:18,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2324. [2021-11-21 00:54:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 1424 states have (on average 1.2949438202247192) internal successors, (1844), 1486 states have internal predecessors, (1844), 721 states have call successors, (721), 182 states have call predecessors, (721), 178 states have return successors, (731), 698 states have call predecessors, (731), 708 states have call successors, (731) [2021-11-21 00:54:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 3296 transitions. [2021-11-21 00:54:18,601 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 3296 transitions. Word has length 13 [2021-11-21 00:54:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:18,601 INFO L470 AbstractCegarLoop]: Abstraction has 2324 states and 3296 transitions. [2021-11-21 00:54:18,601 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) [2021-11-21 00:54:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 3296 transitions. [2021-11-21 00:54:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-21 00:54:18,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:18,606 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] [2021-11-21 00:54:18,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:54:18,607 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:54:18,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1039019793, now seen corresponding path program 1 times [2021-11-21 00:54:18,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:18,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630546363] [2021-11-21 00:54:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:18,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:54:18,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:18,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630546363] [2021-11-21 00:54:18,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630546363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:18,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:18,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:18,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732649720] [2021-11-21 00:54:18,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:18,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:54:18,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:18,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:54:18,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:18,710 INFO L87 Difference]: Start difference. First operand 2324 states and 3296 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:54:20,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:54:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:21,853 INFO L93 Difference]: Finished difference Result 4659 states and 6612 transitions. [2021-11-21 00:54:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:54:21,853 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), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2021-11-21 00:54:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:21,876 INFO L225 Difference]: With dead ends: 4659 [2021-11-21 00:54:21,877 INFO L226 Difference]: Without dead ends: 2339 [2021-11-21 00:54:21,892 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 [2021-11-21 00:54:21,894 INFO L933 BasicCegarLoop]: 2385 mSDtfsCounter, 12 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4759 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:21,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 4759 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 446 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 00:54:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2021-11-21 00:54:22,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2339. [2021-11-21 00:54:22,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 1435 states have (on average 1.2954703832752614) internal successors, (1859), 1497 states have internal predecessors, (1859), 725 states have call successors, (725), 182 states have call predecessors, (725), 178 states have return successors, (735), 702 states have call predecessors, (735), 712 states have call successors, (735) [2021-11-21 00:54:22,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3319 transitions. [2021-11-21 00:54:22,107 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3319 transitions. Word has length 46 [2021-11-21 00:54:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:22,108 INFO L470 AbstractCegarLoop]: Abstraction has 2339 states and 3319 transitions. [2021-11-21 00:54:22,108 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), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:54:22,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3319 transitions. [2021-11-21 00:54:22,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-21 00:54:22,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:22,116 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] [2021-11-21 00:54:22,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:54:22,116 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:54:22,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:22,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2061190592, now seen corresponding path program 1 times [2021-11-21 00:54:22,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:22,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713698255] [2021-11-21 00:54:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:22,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:54:22,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713698255] [2021-11-21 00:54:22,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713698255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:22,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:22,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:22,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235675964] [2021-11-21 00:54:22,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:22,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:54:22,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:54:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:22,278 INFO L87 Difference]: Start difference. First operand 2339 states and 3319 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:54:24,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:54:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:25,299 INFO L93 Difference]: Finished difference Result 3865 states and 5419 transitions. [2021-11-21 00:54:25,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:54:25,300 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2021-11-21 00:54:25,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:25,316 INFO L225 Difference]: With dead ends: 3865 [2021-11-21 00:54:25,316 INFO L226 Difference]: Without dead ends: 1879 [2021-11-21 00:54:25,329 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 [2021-11-21 00:54:25,331 INFO L933 BasicCegarLoop]: 2234 mSDtfsCounter, 1761 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:25,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1762 Valid, 2929 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 00:54:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2021-11-21 00:54:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1878. [2021-11-21 00:54:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1144 states have (on average 1.2805944055944056) internal successors, (1465), 1190 states have internal predecessors, (1465), 569 states have call successors, (569), 169 states have call predecessors, (569), 164 states have return successors, (554), 547 states have call predecessors, (554), 554 states have call successors, (554) [2021-11-21 00:54:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2588 transitions. [2021-11-21 00:54:25,456 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2588 transitions. Word has length 46 [2021-11-21 00:54:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:25,457 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 2588 transitions. [2021-11-21 00:54:25,457 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:54:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2588 transitions. [2021-11-21 00:54:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-21 00:54:25,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:25,462 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] [2021-11-21 00:54:25,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:54:25,463 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:54:25,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:25,463 INFO L85 PathProgramCache]: Analyzing trace with hash -14703897, now seen corresponding path program 1 times [2021-11-21 00:54:25,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:25,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746014489] [2021-11-21 00:54:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:25,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:54:25,599 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:54:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:54:25,801 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 00:54:25,801 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:54:25,802 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 00:54:25,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:54:25,807 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:25,809 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:54:25,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:54:25 BoogieIcfgContainer [2021-11-21 00:54:25,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:54:25,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:54:25,908 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:54:25,908 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:54:25,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:54:04" (3/4) ... [2021-11-21 00:54:25,911 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:54:25,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:54:25,912 INFO L158 Benchmark]: Toolchain (without parser) took 36937.87ms. Allocated memory was 90.2MB in the beginning and 692.1MB in the end (delta: 601.9MB). Free memory was 57.9MB in the beginning and 230.3MB in the end (delta: -172.5MB). Peak memory consumption was 428.6MB. Max. memory is 16.1GB. [2021-11-21 00:54:25,912 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 69.6MB in the beginning and 69.6MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:54:25,913 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3472.31ms. Allocated memory was 90.2MB in the beginning and 199.2MB in the end (delta: 109.1MB). Free memory was 57.6MB in the beginning and 101.4MB in the end (delta: -43.7MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. [2021-11-21 00:54:25,913 INFO L158 Benchmark]: Boogie Procedure Inliner took 432.38ms. Allocated memory is still 199.2MB. Free memory was 101.4MB in the beginning and 113.2MB in the end (delta: -11.9MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2021-11-21 00:54:25,913 INFO L158 Benchmark]: Boogie Preprocessor took 336.08ms. Allocated memory is still 199.2MB. Free memory was 113.2MB in the beginning and 78.4MB in the end (delta: 34.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-11-21 00:54:25,914 INFO L158 Benchmark]: RCFGBuilder took 11670.88ms. Allocated memory was 199.2MB in the beginning and 490.7MB in the end (delta: 291.5MB). Free memory was 78.4MB in the beginning and 233.5MB in the end (delta: -155.2MB). Peak memory consumption was 198.5MB. Max. memory is 16.1GB. [2021-11-21 00:54:25,914 INFO L158 Benchmark]: TraceAbstraction took 21014.01ms. Allocated memory was 490.7MB in the beginning and 692.1MB in the end (delta: 201.3MB). Free memory was 232.5MB in the beginning and 230.3MB in the end (delta: 2.1MB). Peak memory consumption was 202.4MB. Max. memory is 16.1GB. [2021-11-21 00:54:25,915 INFO L158 Benchmark]: Witness Printer took 3.78ms. Allocated memory is still 692.1MB. Free memory is still 230.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:54:25,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 69.6MB in the beginning and 69.6MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3472.31ms. Allocated memory was 90.2MB in the beginning and 199.2MB in the end (delta: 109.1MB). Free memory was 57.6MB in the beginning and 101.4MB in the end (delta: -43.7MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 432.38ms. Allocated memory is still 199.2MB. Free memory was 101.4MB in the beginning and 113.2MB in the end (delta: -11.9MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 336.08ms. Allocated memory is still 199.2MB. Free memory was 113.2MB in the beginning and 78.4MB in the end (delta: 34.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * RCFGBuilder took 11670.88ms. Allocated memory was 199.2MB in the beginning and 490.7MB in the end (delta: 291.5MB). Free memory was 78.4MB in the beginning and 233.5MB in the end (delta: -155.2MB). Peak memory consumption was 198.5MB. Max. memory is 16.1GB. * TraceAbstraction took 21014.01ms. Allocated memory was 490.7MB in the beginning and 692.1MB in the end (delta: 201.3MB). Free memory was 232.5MB in the beginning and 230.3MB in the end (delta: 2.1MB). Peak memory consumption was 202.4MB. Max. memory is 16.1GB. * Witness Printer took 3.78ms. Allocated memory is still 692.1MB. Free memory is still 230.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: 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 10595, overapproximation of bitwiseOr at line 6296. Possible FailurePath: [L5971] static unsigned int vhost_zcopy_mask ; [L9348] static int experimental_zcopytx ; [L10590-L10593] static struct file_operations const vhost_net_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_net_ioctl, & vhost_net_compat_ioctl, 0, & vhost_net_open, 0, & vhost_net_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L10620] int LDV_IN_INTERRUPT ; [L11002] static int ldv_mutex_cred_guard_mutex ; [L11109] static int ldv_mutex_lock ; [L11216] static int ldv_mutex_mtx ; [L11323] static int ldv_mutex_mutex ; [L10623] struct inode *var_group1 ; [L10624] struct file *var_group2 ; [L10625] unsigned int var_vhost_net_ioctl_27_p1 ; [L10626] unsigned long var_vhost_net_ioctl_27_p2 ; [L10627] unsigned int var_vhost_net_compat_ioctl_28_p1 ; [L10628] unsigned long var_vhost_net_compat_ioctl_28_p2 ; [L10629] int res_vhost_net_open_13 ; [L10630] int ldv_s_vhost_net_fops_file_operations ; [L10631] int tmp ; [L10632] int tmp___0 ; [L10633] int tmp___1 ; [L10635] ldv_s_vhost_net_fops_file_operations = 0 [L10636] LDV_IN_INTERRUPT = 1 [L10637] CALL ldv_initialize() [L11433] ldv_mutex_cred_guard_mutex = 1 [L11434] ldv_mutex_lock = 1 [L11435] ldv_mutex_mtx = 1 [L11436] ldv_mutex_mutex = 1 [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; [L10600] COND FALSE !(experimental_zcopytx != 0) [L10604] CALL, EXPR misc_register(& vhost_net_misc) [L11595] return __VERIFIER_nondet_int(); [L10604] RET, EXPR misc_register(& vhost_net_misc) [L10604] tmp = misc_register(& vhost_net_misc) [L10605] return (tmp); [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10682] tmp___1 = __VERIFIER_nondet_int() [L10683] COND TRUE tmp___1 != 0 || ldv_s_vhost_net_fops_file_operations != 0 [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: VAL [__this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=2, tmp___1=-2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10670] FCALL ldv_handler_precall() VAL [__this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=2, tmp___1=-2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10671] CALL vhost_net_ioctl(var_group2, var_vhost_net_ioctl_27_p1, var_vhost_net_ioctl_27_p2) VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={44806:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={44806:-17400}, lock={44806:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, experimental_zcopytx=0, ldv_func_arg1={44806:-17400}, ldv_func_arg1={44806:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, experimental_zcopytx=0, ldv_func_arg1={44806:-17400}, ldv_func_arg1={44806:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, dev={44806:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, dev={44806:-17416}, dev={44806:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5283] struct task_struct *pfo_ret__ ; [L5286] case 1UL: [L5289] case 2UL: [L5292] case 4UL: [L5295] case 8UL: [L5302] return (pfo_ret__); [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, dev={44806:-17416}, dev={44806:-17416}, experimental_zcopytx=0, get_current()={44805:-4}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm [L6413] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, n={44806:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={44810:44811}, err=0, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, n={44806:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={44806:0}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={44806:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={44806:8}, lock={44806:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={44810:44811}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 109 procedures, 1814 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.8s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 10688 SdHoareTripleChecker+Valid, 16.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10673 mSDsluCounter, 19702 SdHoareTripleChecker+Invalid, 15.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5626 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1928 IncrementalHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 14585 mSDtfsCounter, 1928 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2339occurred in iteration=5, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 220 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 4/4 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 [2021-11-21 00:54:25,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:54:28,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:54:28,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:54:28,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:54:28,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:54:28,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:54:28,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:54:28,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:54:28,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:54:28,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:54:28,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:54:28,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:54:28,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:54:28,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:54:28,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:54:28,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:54:28,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:54:28,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:54:28,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:54:28,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:54:28,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:54:28,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:54:28,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:54:28,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:54:28,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:54:28,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:54:28,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:54:28,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:54:28,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:54:28,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:54:28,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:54:28,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:54:28,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:54:28,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:54:28,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:54:28,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:54:28,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:54:28,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:54:28,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:54:28,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:54:28,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:54:28,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-21 00:54:28,431 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:54:28,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:54:28,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:54:28,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:54:28,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:54:28,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:54:28,435 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:54:28,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:54:28,435 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:54:28,436 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:54:28,437 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:54:28,437 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:54:28,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:54:28,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:54:28,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:54:28,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:54:28,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:54:28,440 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:54:28,440 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:54:28,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:54:28,441 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:54:28,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:54:28,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:54:28,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:54:28,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:54:28,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:54:28,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:54:28,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:54:28,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:54:28,444 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:54:28,444 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:54:28,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:54:28,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:54:28,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:54:28,446 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_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-11-21 00:54:28,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:54:28,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:54:28,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:54:28,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:54:28,895 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:54:28,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-21 00:54:28,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/data/38dfdf4d4/6e5e3c2d15a445b4856e14d2fa45bd34/FLAGacf4347e2 [2021-11-21 00:54:29,958 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:54:29,960 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-21 00:54:30,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/data/38dfdf4d4/6e5e3c2d15a445b4856e14d2fa45bd34/FLAGacf4347e2 [2021-11-21 00:54:30,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/data/38dfdf4d4/6e5e3c2d15a445b4856e14d2fa45bd34 [2021-11-21 00:54:30,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:54:30,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:54:30,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:54:30,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:54:30,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:54:30,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:54:30" (1/1) ... [2021-11-21 00:54:30,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188e5b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:30, skipping insertion in model container [2021-11-21 00:54:30,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:54:30" (1/1) ... [2021-11-21 00:54:30,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:54:30,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:54:33,229 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_f3587e50-ed18-420a-bf43-b659c845a871/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-21 00:54:33,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:54:33,354 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:54:33,846 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_f3587e50-ed18-420a-bf43-b659c845a871/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-21 00:54:33,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:54:33,967 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:54:33,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33 WrapperNode [2021-11-21 00:54:33,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:54:33,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:54:33,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:54:33,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:54:33,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (1/1) ... [2021-11-21 00:54:34,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (1/1) ... [2021-11-21 00:54:34,364 INFO L137 Inliner]: procedures = 350, calls = 2627, calls flagged for inlining = 143, calls inlined = 135, statements flattened = 6447 [2021-11-21 00:54:34,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:54:34,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:54:34,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:54:34,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:54:34,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (1/1) ... [2021-11-21 00:54:34,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (1/1) ... [2021-11-21 00:54:34,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (1/1) ... [2021-11-21 00:54:34,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (1/1) ... [2021-11-21 00:54:34,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (1/1) ... [2021-11-21 00:54:34,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (1/1) ... [2021-11-21 00:54:34,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (1/1) ... [2021-11-21 00:54:34,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:54:34,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:54:34,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:54:34,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:54:34,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (1/1) ... [2021-11-21 00:54:34,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:54:34,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:54:34,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:54:34,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:54:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-11-21 00:54:34,760 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-11-21 00:54:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-11-21 00:54:34,761 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-11-21 00:54:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-11-21 00:54:34,761 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-11-21 00:54:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-21 00:54:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-21 00:54:34,761 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-21 00:54:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-21 00:54:34,762 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-21 00:54:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-21 00:54:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 00:54:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-21 00:54:34,762 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-21 00:54:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:54:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-21 00:54:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-21 00:54:34,763 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-21 00:54:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:54:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-21 00:54:34,764 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-21 00:54:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-11-21 00:54:34,764 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-11-21 00:54:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-21 00:54:34,764 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-21 00:54:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-11-21 00:54:34,764 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-11-21 00:54:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-21 00:54:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-21 00:54:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-21 00:54:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-21 00:54:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-21 00:54:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-21 00:54:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-21 00:54:34,766 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-21 00:54:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:54:34,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:54:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-21 00:54:34,766 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-21 00:54:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 00:54:34,767 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 00:54:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-21 00:54:34,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-21 00:54:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-21 00:54:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 00:54:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 00:54:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-11-21 00:54:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-11-21 00:54:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-11-21 00:54:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-11-21 00:54:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-21 00:54:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-21 00:54:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-11-21 00:54:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-11-21 00:54:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-11-21 00:54:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-11-21 00:54:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-21 00:54:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-21 00:54:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:54:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:54:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-21 00:54:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-21 00:54:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-21 00:54:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-21 00:54:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-11-21 00:54:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-11-21 00:54:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:54:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:54:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:54:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-21 00:54:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-21 00:54:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-11-21 00:54:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-11-21 00:54:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:54:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:54:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:54:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-21 00:54:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-21 00:54:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-11-21 00:54:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-11-21 00:54:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-21 00:54:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-21 00:54:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-21 00:54:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:54:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 00:54:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:54:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-21 00:54:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-21 00:54:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-11-21 00:54:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-11-21 00:54:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 00:54:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 00:54:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-21 00:54:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-11-21 00:54:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-11-21 00:54:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:54:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-21 00:54:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-11-21 00:54:34,776 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-11-21 00:54:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-21 00:54:34,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-21 00:54:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:54:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:54:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-21 00:54:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-21 00:54:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 00:54:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 00:54:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-21 00:54:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-21 00:54:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-11-21 00:54:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-11-21 00:54:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-11-21 00:54:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-11-21 00:54:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-21 00:54:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-21 00:54:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-21 00:54:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-21 00:54:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 00:54:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 00:54:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-21 00:54:34,780 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-21 00:54:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 00:54:34,780 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 00:54:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-21 00:54:34,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-21 00:54:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-21 00:54:34,780 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-21 00:54:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-21 00:54:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-21 00:54:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-11-21 00:54:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-11-21 00:54:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-21 00:54:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-21 00:54:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:54:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:54:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-21 00:54:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-11-21 00:54:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-11-21 00:54:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-21 00:54:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-21 00:54:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-21 00:54:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-21 00:54:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-21 00:54:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-21 00:54:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-21 00:54:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-21 00:54:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-21 00:54:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-21 00:54:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-11-21 00:54:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-11-21 00:54:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-11-21 00:54:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-11-21 00:54:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-21 00:54:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-21 00:54:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-21 00:54:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-21 00:54:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-21 00:54:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-21 00:54:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-21 00:54:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-21 00:54:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-21 00:54:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-21 00:54:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:54:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:54:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-11-21 00:54:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-11-21 00:54:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-21 00:54:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-21 00:54:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:54:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-21 00:54:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-21 00:54:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-21 00:54:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-21 00:54:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-11-21 00:54:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-11-21 00:54:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:54:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-21 00:54:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-21 00:54:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-11-21 00:54:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-11-21 00:54:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-21 00:54:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-21 00:54:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:54:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-21 00:54:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-21 00:54:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:54:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-21 00:54:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-21 00:54:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-21 00:54:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-21 00:54:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:54:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:54:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-21 00:54:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-21 00:54:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-21 00:54:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-21 00:54:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-21 00:54:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-21 00:54:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-21 00:54:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-21 00:54:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-21 00:54:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 00:54:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 00:54:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 00:54:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 00:54:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-21 00:54:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-21 00:54:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-21 00:54:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-21 00:54:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:54:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:54:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-21 00:54:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-21 00:54:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-11-21 00:54:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-11-21 00:54:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-21 00:54:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-21 00:54:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-21 00:54:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-21 00:54:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-21 00:54:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-21 00:54:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-21 00:54:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-21 00:54:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-21 00:54:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-21 00:54:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:54:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:54:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-21 00:54:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-21 00:54:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-21 00:54:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-11-21 00:54:34,796 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-11-21 00:54:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-11-21 00:54:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-11-21 00:54:34,797 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-21 00:54:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-21 00:54:34,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:54:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:54:34,797 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 00:54:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 00:54:35,756 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:54:35,760 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:54:50,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-21 00:54:50,911 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: __copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2021-11-21 00:54:50,911 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-21 00:54:50,912 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: __copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2021-11-21 00:54:50,912 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-11-21 00:54:50,912 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-11-21 00:54:50,912 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0bv64 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:54:50,912 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0bv64 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:54:50,913 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-11-21 00:54:50,913 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-11-21 00:54:50,913 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-11-21 00:54:50,913 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0bv64 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:54:50,913 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0bv64 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:54:50,914 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-11-21 00:54:50,914 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16bv32 == __copy_to_user_~size#1; [2021-11-21 00:54:50,914 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:54:50,914 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10bv32 == __copy_to_user_~size#1; [2021-11-21 00:54:50,914 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2021-11-21 00:54:50,915 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:54:50,915 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8bv32 == __copy_to_user_~size#1; [2021-11-21 00:54:50,915 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := __copy_to_user_~tmp___2~4#1[32:0]; [2021-11-21 00:54:50,915 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:54:50,915 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4bv32 == __copy_to_user_~size#1; [2021-11-21 00:54:50,916 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-21 00:54:50,916 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2bv32 == __copy_to_user_~size#1; [2021-11-21 00:54:59,534 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-21 00:54:59,534 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: __copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2021-11-21 00:54:59,534 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0bv64 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:59,535 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0bv64 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:59,535 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-11-21 00:54:59,535 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-11-21 00:54:59,535 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-11-21 00:54:59,535 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-21 00:54:59,535 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: __copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2021-11-21 00:54:59,535 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0bv64 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:59,536 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0bv64 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:59,536 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:59,536 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4bv32 == __copy_from_user_~size#1; [2021-11-21 00:54:59,536 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:59,536 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8bv32 == __copy_from_user_~size#1; [2021-11-21 00:54:59,536 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2bv32 == __copy_from_user_~size#1; [2021-11-21 00:54:59,536 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:59,537 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-11-21 00:54:59,537 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-11-21 00:54:59,537 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := __copy_from_user_~tmp___2~3#1[32:0]; [2021-11-21 00:54:59,537 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2021-11-21 00:54:59,537 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-21 00:54:59,537 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10bv32 == __copy_from_user_~size#1; [2021-11-21 00:54:59,537 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-11-21 00:54:59,538 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16bv32 == __copy_from_user_~size#1; [2021-11-21 00:55:04,586 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:55:04,607 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:55:04,607 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:55:04,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:55:04 BoogieIcfgContainer [2021-11-21 00:55:04,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:55:04,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:55:04,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:55:04,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:55:04,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:54:30" (1/3) ... [2021-11-21 00:55:04,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36170bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:55:04, skipping insertion in model container [2021-11-21 00:55:04,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:33" (2/3) ... [2021-11-21 00:55:04,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36170bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:55:04, skipping insertion in model container [2021-11-21 00:55:04,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:55:04" (3/3) ... [2021-11-21 00:55:04,621 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-21 00:55:04,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:55:04,631 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:55:04,723 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:55:04,729 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 [2021-11-21 00:55:04,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:55:04,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 2218 states, 1540 states have (on average 1.346103896103896) internal successors, (2073), 1586 states have internal predecessors, (2073), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) [2021-11-21 00:55:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 00:55:04,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:04,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:04,803 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:55:04,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash -801145376, now seen corresponding path program 1 times [2021-11-21 00:55:04,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:55:04,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045084306] [2021-11-21 00:55:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:04,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:55:04,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:55:04,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:55:04,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:55:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:05,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:55:05,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:55:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:55:05,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:55:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:55:05,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:55:05,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045084306] [2021-11-21 00:55:05,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045084306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:05,914 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:05,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:55:05,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956514058] [2021-11-21 00:55:05,916 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:05,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:55:05,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:55:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:55:05,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:05,950 INFO L87 Difference]: Start difference. First operand has 2218 states, 1540 states have (on average 1.346103896103896) internal successors, (2073), 1586 states have internal predecessors, (2073), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:55:06,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:06,301 INFO L93 Difference]: Finished difference Result 4422 states and 6498 transitions. [2021-11-21 00:55:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:55:06,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-21 00:55:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:06,347 INFO L225 Difference]: With dead ends: 4422 [2021-11-21 00:55:06,348 INFO L226 Difference]: Without dead ends: 2207 [2021-11-21 00:55:06,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:06,375 INFO L933 BasicCegarLoop]: 3205 mSDtfsCounter, 3193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3193 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:06,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3193 Valid, 3205 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:55:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-21 00:55:06,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-11-21 00:55:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1532 states have (on average 1.3426892950391645) internal successors, (2057), 1575 states have internal predecessors, (2057), 571 states have call successors, (571), 104 states have call predecessors, (571), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-21 00:55:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3194 transitions. [2021-11-21 00:55:06,641 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3194 transitions. Word has length 16 [2021-11-21 00:55:06,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:06,643 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3194 transitions. [2021-11-21 00:55:06,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:55:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3194 transitions. [2021-11-21 00:55:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:55:06,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:06,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:06,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:55:06,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:55:06,862 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:55:06,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash 933280137, now seen corresponding path program 1 times [2021-11-21 00:55:06,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:55:06,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436609173] [2021-11-21 00:55:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:06,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:55:06,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:55:06,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:55:06,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:55:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:07,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:55:07,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:55:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:55:07,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:55:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:55:07,763 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:55:07,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436609173] [2021-11-21 00:55:07,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436609173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:07,764 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:07,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:55:07,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827972444] [2021-11-21 00:55:07,764 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:07,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:55:07,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:55:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:55:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:07,767 INFO L87 Difference]: Start difference. First operand 2207 states and 3194 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:55:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:07,964 INFO L93 Difference]: Finished difference Result 2209 states and 3195 transitions. [2021-11-21 00:55:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:55:07,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-21 00:55:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:07,981 INFO L225 Difference]: With dead ends: 2209 [2021-11-21 00:55:07,981 INFO L226 Difference]: Without dead ends: 2206 [2021-11-21 00:55:07,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:07,985 INFO L933 BasicCegarLoop]: 3191 mSDtfsCounter, 3178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:07,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3178 Valid, 3191 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:55:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-11-21 00:55:08,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2206. [2021-11-21 00:55:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1532 states have (on average 1.3420365535248042) internal successors, (2056), 1574 states have internal predecessors, (2056), 570 states have call successors, (570), 104 states have call predecessors, (570), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-21 00:55:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3192 transitions. [2021-11-21 00:55:08,185 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3192 transitions. Word has length 17 [2021-11-21 00:55:08,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:08,185 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 3192 transitions. [2021-11-21 00:55:08,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:55:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3192 transitions. [2021-11-21 00:55:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 00:55:08,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:08,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:08,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:55:08,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:55:08,406 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:55:08,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:08,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1134098941, now seen corresponding path program 1 times [2021-11-21 00:55:08,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:55:08,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987857098] [2021-11-21 00:55:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:08,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:55:08,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:55:08,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:55:08,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:55:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:09,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:55:09,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:55:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:55:09,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:55:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:55:09,313 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:55:09,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987857098] [2021-11-21 00:55:09,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987857098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:09,314 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:09,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:55:09,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203761171] [2021-11-21 00:55:09,314 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:09,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:55:09,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:55:09,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:55:09,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:09,315 INFO L87 Difference]: Start difference. First operand 2206 states and 3192 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:55:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:09,524 INFO L93 Difference]: Finished difference Result 2208 states and 3193 transitions. [2021-11-21 00:55:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:55:09,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-21 00:55:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:09,542 INFO L225 Difference]: With dead ends: 2208 [2021-11-21 00:55:09,542 INFO L226 Difference]: Without dead ends: 2205 [2021-11-21 00:55:09,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:09,548 INFO L933 BasicCegarLoop]: 3189 mSDtfsCounter, 3175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3175 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:09,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3175 Valid, 3189 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:55:09,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2021-11-21 00:55:09,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2205. [2021-11-21 00:55:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1532 states have (on average 1.3413838120104438) internal successors, (2055), 1573 states have internal predecessors, (2055), 569 states have call successors, (569), 104 states have call predecessors, (569), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-21 00:55:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3190 transitions. [2021-11-21 00:55:09,708 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3190 transitions. Word has length 18 [2021-11-21 00:55:09,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:09,708 INFO L470 AbstractCegarLoop]: Abstraction has 2205 states and 3190 transitions. [2021-11-21 00:55:09,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:55:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3190 transitions. [2021-11-21 00:55:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:55:09,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:09,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:09,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-21 00:55:09,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:55:09,925 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:55:09,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash -798336052, now seen corresponding path program 1 times [2021-11-21 00:55:09,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:55:09,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123002998] [2021-11-21 00:55:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:09,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:55:09,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:55:09,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:55:09,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 00:55:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:10,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:55:10,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:55:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:55:10,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:55:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:55:10,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:55:10,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123002998] [2021-11-21 00:55:10,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123002998] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:10,997 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:10,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:55:10,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317543329] [2021-11-21 00:55:10,998 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:10,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:55:10,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:55:10,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:55:10,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:10,999 INFO L87 Difference]: Start difference. First operand 2205 states and 3190 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:55:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:11,349 INFO L93 Difference]: Finished difference Result 4994 states and 7160 transitions. [2021-11-21 00:55:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:55:11,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-21 00:55:11,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:11,380 INFO L225 Difference]: With dead ends: 4994 [2021-11-21 00:55:11,380 INFO L226 Difference]: Without dead ends: 2791 [2021-11-21 00:55:11,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:11,400 INFO L933 BasicCegarLoop]: 3581 mSDtfsCounter, 1201 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 6307 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:11,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 6307 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:55:11,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-11-21 00:55:11,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2788. [2021-11-21 00:55:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 1930 states have (on average 1.3233160621761657) internal successors, (2554), 1990 states have internal predecessors, (2554), 688 states have call successors, (688), 172 states have call predecessors, (688), 169 states have return successors, (693), 667 states have call predecessors, (693), 679 states have call successors, (693) [2021-11-21 00:55:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3935 transitions. [2021-11-21 00:55:11,623 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3935 transitions. Word has length 19 [2021-11-21 00:55:11,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:11,623 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 3935 transitions. [2021-11-21 00:55:11,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:55:11,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3935 transitions. [2021-11-21 00:55:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-21 00:55:11,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:11,637 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] [2021-11-21 00:55:11,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-21 00:55:11,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:55:11,852 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:55:11,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:11,852 INFO L85 PathProgramCache]: Analyzing trace with hash -587069341, now seen corresponding path program 1 times [2021-11-21 00:55:11,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:55:11,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103790751] [2021-11-21 00:55:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:11,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:55:11,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:55:11,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:55:11,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 00:55:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:12,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:55:12,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:55:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:55:12,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:55:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:55:13,178 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:55:13,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103790751] [2021-11-21 00:55:13,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103790751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:13,178 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:13,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:55:13,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604278617] [2021-11-21 00:55:13,179 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:13,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:55:13,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:55:13,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:55:13,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:55:13,180 INFO L87 Difference]: Start difference. First operand 2788 states and 3935 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-21 00:55:13,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:13,581 INFO L93 Difference]: Finished difference Result 5605 states and 7919 transitions. [2021-11-21 00:55:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:55:13,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 55 [2021-11-21 00:55:13,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:13,604 INFO L225 Difference]: With dead ends: 5605 [2021-11-21 00:55:13,604 INFO L226 Difference]: Without dead ends: 2828 [2021-11-21 00:55:13,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:55:13,619 INFO L933 BasicCegarLoop]: 3176 mSDtfsCounter, 58 mSDsluCounter, 6250 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 9426 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:13,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 9426 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:55:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2021-11-21 00:55:13,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2828. [2021-11-21 00:55:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 1962 states have (on average 1.3236493374108054) internal successors, (2597), 2022 states have internal predecessors, (2597), 696 states have call successors, (696), 172 states have call predecessors, (696), 169 states have return successors, (701), 675 states have call predecessors, (701), 687 states have call successors, (701) [2021-11-21 00:55:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3994 transitions. [2021-11-21 00:55:13,826 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3994 transitions. Word has length 55 [2021-11-21 00:55:13,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:13,827 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 3994 transitions. [2021-11-21 00:55:13,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-21 00:55:13,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3994 transitions. [2021-11-21 00:55:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-21 00:55:13,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:13,830 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] [2021-11-21 00:55:13,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:55:14,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:55:14,046 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:55:14,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:14,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1997599171, now seen corresponding path program 1 times [2021-11-21 00:55:14,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:55:14,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87921888] [2021-11-21 00:55:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:14,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:55:14,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:55:14,049 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:55:14,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 00:55:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:14,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:55:14,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:55:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:55:14,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:55:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:55:15,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:55:15,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87921888] [2021-11-21 00:55:15,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87921888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:15,172 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:15,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:55:15,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104795140] [2021-11-21 00:55:15,173 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:15,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:55:15,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:55:15,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:55:15,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:15,174 INFO L87 Difference]: Start difference. First operand 2828 states and 3994 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:55:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:15,447 INFO L93 Difference]: Finished difference Result 5647 states and 8045 transitions. [2021-11-21 00:55:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:55:15,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2021-11-21 00:55:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:15,469 INFO L225 Difference]: With dead ends: 5647 [2021-11-21 00:55:15,469 INFO L226 Difference]: Without dead ends: 2830 [2021-11-21 00:55:15,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:15,491 INFO L933 BasicCegarLoop]: 3167 mSDtfsCounter, 0 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6327 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:15,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6327 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:55:15,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2021-11-21 00:55:15,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2828. [2021-11-21 00:55:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 1962 states have (on average 1.32059123343527) internal successors, (2591), 2022 states have internal predecessors, (2591), 696 states have call successors, (696), 172 states have call predecessors, (696), 169 states have return successors, (701), 675 states have call predecessors, (701), 687 states have call successors, (701) [2021-11-21 00:55:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3988 transitions. [2021-11-21 00:55:15,685 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3988 transitions. Word has length 59 [2021-11-21 00:55:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:15,686 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 3988 transitions. [2021-11-21 00:55:15,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:55:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3988 transitions. [2021-11-21 00:55:15,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 00:55:15,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:15,689 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, 1, 1, 1, 1, 1] [2021-11-21 00:55:15,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:55:15,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:55:15,905 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:55:15,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1160460849, now seen corresponding path program 1 times [2021-11-21 00:55:15,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:55:15,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396495785] [2021-11-21 00:55:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:15,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:55:15,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:55:15,909 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:55:15,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 00:55:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:16,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:55:16,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:55:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:55:17,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:55:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:55:17,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:55:17,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396495785] [2021-11-21 00:55:17,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396495785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:17,259 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:17,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:55:17,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266603531] [2021-11-21 00:55:17,259 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:17,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:55:17,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:55:17,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:55:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:17,261 INFO L87 Difference]: Start difference. First operand 2828 states and 3988 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-11-21 00:55:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:17,488 INFO L93 Difference]: Finished difference Result 4642 states and 6495 transitions. [2021-11-21 00:55:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:55:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 65 [2021-11-21 00:55:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:17,506 INFO L225 Difference]: With dead ends: 4642 [2021-11-21 00:55:17,506 INFO L226 Difference]: Without dead ends: 2350 [2021-11-21 00:55:17,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:55:17,522 INFO L933 BasicCegarLoop]: 3066 mSDtfsCounter, 2146 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:17,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2146 Valid, 4068 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:55:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2021-11-21 00:55:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2350. [2021-11-21 00:55:17,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 1637 states have (on average 1.3091020158827122) internal successors, (2143), 1682 states have internal predecessors, (2143), 555 states have call successors, (555), 161 states have call predecessors, (555), 157 states have return successors, (542), 535 states have call predecessors, (542), 542 states have call successors, (542) [2021-11-21 00:55:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3240 transitions. [2021-11-21 00:55:17,741 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3240 transitions. Word has length 65 [2021-11-21 00:55:17,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:17,742 INFO L470 AbstractCegarLoop]: Abstraction has 2350 states and 3240 transitions. [2021-11-21 00:55:17,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-11-21 00:55:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3240 transitions. [2021-11-21 00:55:17,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 00:55:17,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:17,746 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, 1, 1, 1, 1] [2021-11-21 00:55:17,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:55:17,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:55:17,961 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:55:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:17,962 INFO L85 PathProgramCache]: Analyzing trace with hash 904423170, now seen corresponding path program 1 times [2021-11-21 00:55:17,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:55:17,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196310299] [2021-11-21 00:55:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:17,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:55:17,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:55:17,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:55:18,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 00:55:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:18,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:55:18,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:55:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:55:18,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:55:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:55:19,332 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:55:19,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196310299] [2021-11-21 00:55:19,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196310299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:19,333 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:19,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-21 00:55:19,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027014286] [2021-11-21 00:55:19,333 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:19,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:55:19,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:55:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:55:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:55:19,334 INFO L87 Difference]: Start difference. First operand 2350 states and 3240 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-21 00:55:19,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:19,698 INFO L93 Difference]: Finished difference Result 2382 states and 3290 transitions. [2021-11-21 00:55:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:55:19,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2021-11-21 00:55:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:19,720 INFO L225 Difference]: With dead ends: 2382 [2021-11-21 00:55:19,720 INFO L226 Difference]: Without dead ends: 2372 [2021-11-21 00:55:19,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:55:19,723 INFO L933 BasicCegarLoop]: 2566 mSDtfsCounter, 37 mSDsluCounter, 12814 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 15380 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:19,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 15380 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:55:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-11-21 00:55:19,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2355. [2021-11-21 00:55:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 1641 states have (on average 1.3083485679463742) internal successors, (2147), 1686 states have internal predecessors, (2147), 555 states have call successors, (555), 161 states have call predecessors, (555), 158 states have return successors, (545), 536 states have call predecessors, (545), 542 states have call successors, (545) [2021-11-21 00:55:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3247 transitions. [2021-11-21 00:55:19,886 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3247 transitions. Word has length 65 [2021-11-21 00:55:19,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:19,886 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 3247 transitions. [2021-11-21 00:55:19,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-21 00:55:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3247 transitions. [2021-11-21 00:55:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-21 00:55:19,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:19,890 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:19,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:55:20,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:55:20,105 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:55:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:20,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1585041309, now seen corresponding path program 1 times [2021-11-21 00:55:20,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:55:20,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576518610] [2021-11-21 00:55:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:20,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:55:20,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:55:20,108 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:55:20,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 00:55:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:55:23,852 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:55:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:55:29,487 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 00:55:29,487 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:55:29,489 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 00:55:29,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:55:29,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:55:29,716 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:29,720 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:55:29,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:55:29 BoogieIcfgContainer [2021-11-21 00:55:29,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:55:29,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:55:29,827 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:55:29,827 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:55:29,828 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:55:04" (3/4) ... [2021-11-21 00:55:29,831 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:55:29,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:55:29,831 INFO L158 Benchmark]: Toolchain (without parser) took 59506.85ms. Allocated memory was 54.5MB in the beginning and 532.7MB in the end (delta: 478.2MB). Free memory was 27.6MB in the beginning and 115.1MB in the end (delta: -87.5MB). Peak memory consumption was 390.8MB. Max. memory is 16.1GB. [2021-11-21 00:55:29,831 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory is still 34.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:55:29,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3642.29ms. Allocated memory was 54.5MB in the beginning and 159.4MB in the end (delta: 104.9MB). Free memory was 27.3MB in the beginning and 76.8MB in the end (delta: -49.6MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2021-11-21 00:55:29,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 395.75ms. Allocated memory is still 159.4MB. Free memory was 76.8MB in the beginning and 78.2MB in the end (delta: -1.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2021-11-21 00:55:29,833 INFO L158 Benchmark]: Boogie Preprocessor took 313.22ms. Allocated memory is still 159.4MB. Free memory was 78.2MB in the beginning and 67.5MB in the end (delta: 10.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2021-11-21 00:55:29,833 INFO L158 Benchmark]: RCFGBuilder took 29934.38ms. Allocated memory was 159.4MB in the beginning and 442.5MB in the end (delta: 283.1MB). Free memory was 67.5MB in the beginning and 207.8MB in the end (delta: -140.3MB). Peak memory consumption was 148.9MB. Max. memory is 16.1GB. [2021-11-21 00:55:29,834 INFO L158 Benchmark]: TraceAbstraction took 25211.11ms. Allocated memory was 442.5MB in the beginning and 532.7MB in the end (delta: 90.2MB). Free memory was 207.8MB in the beginning and 115.1MB in the end (delta: 92.7MB). Peak memory consumption was 184.0MB. Max. memory is 16.1GB. [2021-11-21 00:55:29,834 INFO L158 Benchmark]: Witness Printer took 4.06ms. Allocated memory is still 532.7MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:55:29,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory is still 34.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3642.29ms. Allocated memory was 54.5MB in the beginning and 159.4MB in the end (delta: 104.9MB). Free memory was 27.3MB in the beginning and 76.8MB in the end (delta: -49.6MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 395.75ms. Allocated memory is still 159.4MB. Free memory was 76.8MB in the beginning and 78.2MB in the end (delta: -1.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 313.22ms. Allocated memory is still 159.4MB. Free memory was 78.2MB in the beginning and 67.5MB in the end (delta: 10.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * RCFGBuilder took 29934.38ms. Allocated memory was 159.4MB in the beginning and 442.5MB in the end (delta: 283.1MB). Free memory was 67.5MB in the beginning and 207.8MB in the end (delta: -140.3MB). Peak memory consumption was 148.9MB. Max. memory is 16.1GB. * TraceAbstraction took 25211.11ms. Allocated memory was 442.5MB in the beginning and 532.7MB in the end (delta: 90.2MB). Free memory was 207.8MB in the beginning and 115.1MB in the end (delta: 92.7MB). Peak memory consumption was 184.0MB. Max. memory is 16.1GB. * Witness Printer took 4.06ms. Allocated memory is still 532.7MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: 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 10595. Possible FailurePath: [L5971] static unsigned int vhost_zcopy_mask ; [L9348] static int experimental_zcopytx ; [L10590-L10593] static struct file_operations const vhost_net_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_net_ioctl, & vhost_net_compat_ioctl, 0, & vhost_net_open, 0, & vhost_net_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L10620] int LDV_IN_INTERRUPT ; [L11002] static int ldv_mutex_cred_guard_mutex ; [L11109] static int ldv_mutex_lock ; [L11216] static int ldv_mutex_mtx ; [L11323] static int ldv_mutex_mutex ; VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=0, ldv_mutex_cred_guard_mutex=0, ldv_mutex_lock=0, ldv_mutex_mtx=0, ldv_mutex_mutex=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10623] struct inode *var_group1 ; [L10624] struct file *var_group2 ; [L10625] unsigned int var_vhost_net_ioctl_27_p1 ; [L10626] unsigned long var_vhost_net_ioctl_27_p2 ; [L10627] unsigned int var_vhost_net_compat_ioctl_28_p1 ; [L10628] unsigned long var_vhost_net_compat_ioctl_28_p2 ; [L10629] int res_vhost_net_open_13 ; [L10630] int ldv_s_vhost_net_fops_file_operations ; [L10631] int tmp ; [L10632] int tmp___0 ; [L10633] int tmp___1 ; [L10635] ldv_s_vhost_net_fops_file_operations = 0 [L10636] LDV_IN_INTERRUPT = 1 [L10637] CALL ldv_initialize() [L11433] ldv_mutex_cred_guard_mutex = 1 [L11434] ldv_mutex_lock = 1 [L11435] ldv_mutex_mtx = 1 [L11436] ldv_mutex_mutex = 1 VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10604] CALL, EXPR misc_register(& vhost_net_misc) [L11595] return __VERIFIER_nondet_int(); [L10604] RET, EXPR misc_register(& vhost_net_misc) [L10604] tmp = misc_register(& vhost_net_misc) [L10605] return (tmp); VAL [\result=0, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10682] tmp___1 = __VERIFIER_nondet_int() [L10683] COND TRUE tmp___1 != 0 || ldv_s_vhost_net_fops_file_operations != 0 VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: [L10673] case 3: VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10675] CALL vhost_net_compat_ioctl(var_group2, var_vhost_net_compat_ioctl_28_p1, var_vhost_net_compat_ioctl_28_p2) [L10582] void *tmp ; [L10583] long tmp___0 ; [L10585] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L9300] return ((void *)((unsigned long )uptr)); VAL [\old(uptr)=0, \result={0:0}, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, uptr=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10585] RET, EXPR compat_ptr((compat_uptr_t )arg) [L10585] tmp = compat_ptr((compat_uptr_t )arg) [L10586] CALL vhost_net_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={6989586647450910720:65552}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={6989586647450910720:65552}, lock={6989586647450910720:65552}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={6989586647450910720:65552}, lock={6989586647450910720:65552}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, ldv_func_arg1={6989586647450910720:65552}, ldv_func_arg1={6989586647450910720:65552}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, ldv_func_arg1={6989586647450910720:65552}, ldv_func_arg1={6989586647450910720:65552}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={6989586647450910720:65536}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={6989586647450910720:65536}, dev={6989586647450910720:65536}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5283] struct task_struct *pfo_ret__ ; [L5286] case 1UL: [L5289] case 2UL: [L5292] case 4UL: [L5295] case 8UL: VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(ldv_mutex_mutex)=1, \result={144115188075859968:18014398509514880}, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, pfo_ret__={144115188075859968:18014398509514880}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={6989586647450910720:65536}, dev={6989586647450910720:65536}, experimental_zcopytx=0, get_current()={144115188075859968:18014398509514880}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={6989586647450910720:65536}, dev={6989586647450910720:65536}, dev->mm={18014398509481984:54078379900534792}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={144115188075859968:18014398509514880}, tmp->mm={0:72092778410016776}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L VAL [(unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L=0, \old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={6989586647450910720:65536}, dev={6989586647450910720:65536}, dev->mm={18014398509481984:54078379900534792}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={144115188075859968:18014398509514880}, tmp->mm={0:72092778410016776}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={6989586647450910720:65536}, n={6989586647450910720:65536}, rx_sock={222:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, err=0, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={6989586647450910720:65536}, n={6989586647450910720:65536}, rx_sock={222:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={6989586647450910720:65536}, rx_sock={222:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={6989586647450910720:65536}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={6989586647450910720:82952}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={6989586647450910720:82960}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={6989586647450910720:82960}, lock={6989586647450910720:82960}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 105 procedures, 2218 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.0s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13015 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12988 mSDsluCounter, 51093 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25952 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 25141 mSDtfsCounter, 82 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 612 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2828occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 382 NumberOfCodeBlocks, 382 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 999 SizeOfPredicates, 1 NumberOfNonLiveVariables, 4990 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 20/20 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 [2021-11-21 00:55:29,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3587e50-ed18-420a-bf43-b659c845a871/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample