./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/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_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:46:48,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:46:48,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:46:48,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:46:48,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:46:48,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:46:48,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:46:48,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:46:48,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:46:48,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:46:48,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:46:48,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:46:48,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:46:48,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:46:48,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:46:48,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:46:48,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:46:48,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:46:48,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:46:48,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:46:48,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:46:48,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:46:48,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:46:48,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:46:48,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:46:48,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:46:48,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:46:48,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:46:48,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:46:48,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:46:48,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:46:48,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:46:48,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:46:48,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:46:48,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:46:48,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:46:48,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:46:48,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:46:48,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:46:48,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:46:48,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:46:48,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:46:48,311 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:46:48,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:46:48,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:46:48,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:46:48,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:46:48,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:46:48,315 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:46:48,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:46:48,315 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:46:48,316 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:46:48,317 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:46:48,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:46:48,318 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:46:48,318 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:46:48,319 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:46:48,319 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:46:48,319 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:46:48,320 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:46:48,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:46:48,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:46:48,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:46:48,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:46:48,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:46:48,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:46:48,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:46:48,323 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:46:48,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:46:48,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:46:48,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:46:48,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:46:48,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:46:48,325 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:46:48,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:46:48,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:46:48,326 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:46:48,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:46:48,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:46:48,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:46:48,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-11-03 03:46:48,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:46:48,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:46:48,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:46:48,737 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:46:48,738 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:46:48,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-03 03:46:48,819 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/data/5edbbae50/5cd94a14b78144b69fde2eb09f26820d/FLAG626014867 [2022-11-03 03:46:49,854 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:46:49,855 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-03 03:46:49,908 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/data/5edbbae50/5cd94a14b78144b69fde2eb09f26820d/FLAG626014867 [2022-11-03 03:46:50,202 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/data/5edbbae50/5cd94a14b78144b69fde2eb09f26820d [2022-11-03 03:46:50,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:46:50,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:46:50,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:46:50,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:46:50,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:46:50,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:46:50" (1/1) ... [2022-11-03 03:46:50,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40fdca60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50, skipping insertion in model container [2022-11-03 03:46:50,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:46:50" (1/1) ... [2022-11-03 03:46:50,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:46:50,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:46:52,872 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_b2d971d1-84c4-483e-9c4f-67050b3e18b2/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-03 03:46:52,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:46:53,010 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:46:53,583 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_b2d971d1-84c4-483e-9c4f-67050b3e18b2/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-03 03:46:53,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:46:53,709 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:46:53,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53 WrapperNode [2022-11-03 03:46:53,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:46:53,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:46:53,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:46:53,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:46:53,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:53,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:54,103 INFO L138 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6648 [2022-11-03 03:46:54,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:46:54,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:46:54,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:46:54,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:46:54,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:54,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:54,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:54,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:54,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:54,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:54,360 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:54,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:54,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:46:54,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:46:54,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:46:54,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:46:54,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (1/1) ... [2022-11-03 03:46:54,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:46:54,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:54,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:46:54,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:46:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-11-03 03:46:54,524 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-11-03 03:46:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-11-03 03:46:54,524 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-11-03 03:46:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-11-03 03:46:54,525 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-11-03 03:46:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-11-03 03:46:54,525 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-11-03 03:46:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 03:46:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 03:46:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-11-03 03:46:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-11-03 03:46:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:46:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-11-03 03:46:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-11-03 03:46:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:46:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-03 03:46:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-03 03:46:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-11-03 03:46:54,528 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-11-03 03:46:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-11-03 03:46:54,528 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-11-03 03:46:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-11-03 03:46:54,528 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-11-03 03:46:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-03 03:46:54,529 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-03 03:46:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 03:46:54,529 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 03:46:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 03:46:54,530 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 03:46:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-11-03 03:46:54,530 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-11-03 03:46:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:46:54,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:46:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-11-03 03:46:54,531 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-11-03 03:46:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:46:54,531 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:46:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:46:54,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:46:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-03 03:46:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 03:46:54,532 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 03:46:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-11-03 03:46:54,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-11-03 03:46:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-11-03 03:46:54,534 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-11-03 03:46:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-11-03 03:46:54,535 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-11-03 03:46:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-11-03 03:46:54,536 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-11-03 03:46:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-11-03 03:46:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-11-03 03:46:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2022-11-03 03:46:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2022-11-03 03:46:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 03:46:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 03:46:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:46:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:46:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 03:46:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 03:46:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-11-03 03:46:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-11-03 03:46:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-11-03 03:46:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-11-03 03:46:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:46:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:46:54,541 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:46:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-11-03 03:46:54,541 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-11-03 03:46:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-11-03 03:46:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-11-03 03:46:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:46:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:46:54,543 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:46:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-11-03 03:46:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-11-03 03:46:54,544 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-11-03 03:46:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-11-03 03:46:54,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:46:54,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:46:54,544 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-11-03 03:46:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-11-03 03:46:54,546 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-11-03 03:46:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-11-03 03:46:54,546 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 03:46:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 03:46:54,547 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-11-03 03:46:54,548 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-11-03 03:46:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-11-03 03:46:54,548 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-11-03 03:46:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:46:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:46:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 03:46:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 03:46:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:46:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:46:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-03 03:46:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-03 03:46:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 03:46:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 03:46:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-11-03 03:46:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-11-03 03:46:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-11-03 03:46:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-11-03 03:46:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-11-03 03:46:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-11-03 03:46:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-03 03:46:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-03 03:46:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 03:46:54,556 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 03:46:54,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:46:54,559 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 03:46:54,559 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 03:46:54,560 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-11-03 03:46:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-11-03 03:46:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 03:46:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 03:46:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:46:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-11-03 03:46:54,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-11-03 03:46:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:46:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-11-03 03:46:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-11-03 03:46:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-11-03 03:46:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-11-03 03:46:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-11-03 03:46:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-11-03 03:46:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-03 03:46:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-03 03:46:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:46:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:46:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-03 03:46:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-11-03 03:46:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-11-03 03:46:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:46:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 03:46:54,573 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 03:46:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-11-03 03:46:54,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-11-03 03:46:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-03 03:46:54,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-03 03:46:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-11-03 03:46:54,574 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-11-03 03:46:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-11-03 03:46:54,574 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-11-03 03:46:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-11-03 03:46:54,575 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-11-03 03:46:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-11-03 03:46:54,575 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-11-03 03:46:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-11-03 03:46:54,575 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-11-03 03:46:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 03:46:54,576 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 03:46:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 03:46:54,576 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 03:46:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:46:54,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:46:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-11-03 03:46:54,577 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-11-03 03:46:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-03 03:46:54,577 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-03 03:46:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:46:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-11-03 03:46:54,578 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-11-03 03:46:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 03:46:54,578 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 03:46:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-11-03 03:46:54,579 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-11-03 03:46:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:46:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-11-03 03:46:54,579 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-11-03 03:46:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-11-03 03:46:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-11-03 03:46:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-11-03 03:46:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-11-03 03:46:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:46:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 03:46:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 03:46:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:46:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-03 03:46:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-03 03:46:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:46:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:46:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-11-03 03:46:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-11-03 03:46:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 03:46:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 03:46:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-03 03:46:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-03 03:46:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-11-03 03:46:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-11-03 03:46:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:46:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:46:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2022-11-03 03:46:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2022-11-03 03:46:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 03:46:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 03:46:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-11-03 03:46:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-11-03 03:46:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-03 03:46:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-03 03:46:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:46:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:46:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-11-03 03:46:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-11-03 03:46:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-11-03 03:46:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-11-03 03:46:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-03 03:46:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-03 03:46:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-11-03 03:46:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-11-03 03:46:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-11-03 03:46:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-11-03 03:46:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:46:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:46:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-11-03 03:46:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-11-03 03:46:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 03:46:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 03:46:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:46:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:46:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-11-03 03:46:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-11-03 03:46:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:46:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-11-03 03:46:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-11-03 03:46:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-11-03 03:46:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-11-03 03:46:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 03:46:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 03:46:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:46:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:46:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 03:46:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 03:46:55,752 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:46:55,761 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:47:03,496 INFO L769 $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 [2022-11-03 03:47:03,496 INFO L769 $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; [2022-11-03 03:47:03,496 INFO L769 $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 [2022-11-03 03:47:03,496 INFO L769 $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; [2022-11-03 03:47:03,497 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-11-03 03:47:03,497 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-11-03 03:47:03,497 INFO L769 $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; [2022-11-03 03:47:03,497 INFO L769 $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; [2022-11-03 03:47:03,497 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-11-03 03:47:03,497 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-11-03 03:47:03,497 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-11-03 03:47:03,498 INFO L769 $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; [2022-11-03 03:47:03,498 INFO L769 $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; [2022-11-03 03:47:03,498 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-11-03 03:47:03,498 INFO L769 $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; [2022-11-03 03:47:03,498 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-03 03:47:03,498 INFO L769 $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; [2022-11-03 03:47:03,499 INFO L769 $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 [2022-11-03 03:47:03,499 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-03 03:47:03,499 INFO L769 $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; [2022-11-03 03:47:03,499 INFO L769 $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); [2022-11-03 03:47:03,499 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-03 03:47:03,499 INFO L769 $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; [2022-11-03 03:47:03,500 INFO L769 $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; [2022-11-03 03:47:03,500 INFO L769 $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; [2022-11-03 03:47:06,621 INFO L769 $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 [2022-11-03 03:47:06,622 INFO L769 $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; [2022-11-03 03:47:06,622 INFO L769 $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; [2022-11-03 03:47:06,622 INFO L769 $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; [2022-11-03 03:47:06,622 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-11-03 03:47:06,622 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-11-03 03:47:06,622 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-11-03 03:47:06,623 INFO L769 $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 [2022-11-03 03:47:06,623 INFO L769 $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; [2022-11-03 03:47:06,623 INFO L769 $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; [2022-11-03 03:47:06,623 INFO L769 $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; [2022-11-03 03:47:06,623 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-03 03:47:06,623 INFO L769 $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; [2022-11-03 03:47:06,623 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-03 03:47:06,624 INFO L769 $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; [2022-11-03 03:47:06,624 INFO L769 $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; [2022-11-03 03:47:06,624 INFO L769 $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; [2022-11-03 03:47:06,624 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-11-03 03:47:06,624 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-11-03 03:47:06,624 INFO L769 $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); [2022-11-03 03:47:06,624 INFO L769 $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 [2022-11-03 03:47:06,625 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-03 03:47:06,625 INFO L769 $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; [2022-11-03 03:47:06,625 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-11-03 03:47:06,625 INFO L769 $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; [2022-11-03 03:47:08,252 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:47:09,994 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:47:09,995 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:47:10,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:10 BoogieIcfgContainer [2022-11-03 03:47:10,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:47:10,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:47:10,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:47:10,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:47:10,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:46:50" (1/3) ... [2022-11-03 03:47:10,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e2d49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:47:10, skipping insertion in model container [2022-11-03 03:47:10,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:53" (2/3) ... [2022-11-03 03:47:10,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e2d49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:47:10, skipping insertion in model container [2022-11-03 03:47:10,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:10" (3/3) ... [2022-11-03 03:47:10,012 INFO L112 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-03 03:47:10,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:47:10,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:47:10,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:47:10,191 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d8c9634, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:47:10,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:47:10,206 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) [2022-11-03 03:47:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 03:47:10,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:10,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:10,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1664661916, now seen corresponding path program 1 times [2022-11-03 03:47:10,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:10,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470199236] [2022-11-03 03:47:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:10,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:10,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:10,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470199236] [2022-11-03 03:47:10,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470199236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:10,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:10,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:10,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367435703] [2022-11-03 03:47:10,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:10,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:10,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:11,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:11,044 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) [2022-11-03 03:47:13,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:14,213 INFO L93 Difference]: Finished difference Result 3622 states and 5351 transitions. [2022-11-03 03:47:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:14,216 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 [2022-11-03 03:47:14,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:14,245 INFO L225 Difference]: With dead ends: 3622 [2022-11-03 03:47:14,245 INFO L226 Difference]: Without dead ends: 1806 [2022-11-03 03:47:14,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:14,266 INFO L413 NwaCegarLoop]: 2411 mSDtfsCounter, 2628 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:14,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2630 Valid, 2411 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 03:47:14,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2022-11-03 03:47:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1806. [2022-11-03 03:47:14,461 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) [2022-11-03 03:47:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2626 transitions. [2022-11-03 03:47:14,481 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2626 transitions. Word has length 10 [2022-11-03 03:47:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:14,483 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2626 transitions. [2022-11-03 03:47:14,483 INFO L496 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) [2022-11-03 03:47:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2626 transitions. [2022-11-03 03:47:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 03:47:14,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:14,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:14,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:47:14,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:14,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash -65941382, now seen corresponding path program 1 times [2022-11-03 03:47:14,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:14,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892576612] [2022-11-03 03:47:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:14,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:14,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:14,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892576612] [2022-11-03 03:47:14,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892576612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:14,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:14,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43955843] [2022-11-03 03:47:14,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:14,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:14,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:14,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:14,636 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) [2022-11-03 03:47:16,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:19,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:19,788 INFO L93 Difference]: Finished difference Result 1825 states and 2647 transitions. [2022-11-03 03:47:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:19,789 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 [2022-11-03 03:47:19,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:19,805 INFO L225 Difference]: With dead ends: 1825 [2022-11-03 03:47:19,805 INFO L226 Difference]: Without dead ends: 1822 [2022-11-03 03:47:19,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:19,809 INFO L413 NwaCegarLoop]: 2406 mSDtfsCounter, 2594 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2603 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:19,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2603 Valid, 2430 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 03:47:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2022-11-03 03:47:19,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1819. [2022-11-03 03:47:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1127 states have (on average 1.3141082519964506) internal successors, (1481), 1169 states have internal predecessors, (1481), 579 states have call successors, (579), 113 states have call predecessors, (579), 112 states have return successors, (575), 570 states have call predecessors, (575), 575 states have call successors, (575) [2022-11-03 03:47:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2635 transitions. [2022-11-03 03:47:19,961 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2635 transitions. Word has length 11 [2022-11-03 03:47:19,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:19,962 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 2635 transitions. [2022-11-03 03:47:19,962 INFO L496 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) [2022-11-03 03:47:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2635 transitions. [2022-11-03 03:47:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:47:19,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:19,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:19,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:47:19,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:19,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:19,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2045207513, now seen corresponding path program 1 times [2022-11-03 03:47:19,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:19,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922124651] [2022-11-03 03:47:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:19,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:20,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:20,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922124651] [2022-11-03 03:47:20,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922124651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:20,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:20,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794698546] [2022-11-03 03:47:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:20,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:20,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:20,126 INFO L87 Difference]: Start difference. First operand 1819 states and 2635 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) [2022-11-03 03:47:22,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:24,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:25,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:25,369 INFO L93 Difference]: Finished difference Result 1824 states and 2645 transitions. [2022-11-03 03:47:25,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:25,370 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 [2022-11-03 03:47:25,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:25,383 INFO L225 Difference]: With dead ends: 1824 [2022-11-03 03:47:25,383 INFO L226 Difference]: Without dead ends: 1821 [2022-11-03 03:47:25,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:25,387 INFO L413 NwaCegarLoop]: 2404 mSDtfsCounter, 2591 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:25,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 2428 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2022-11-03 03:47:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2022-11-03 03:47:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1818. [2022-11-03 03:47:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1127 states have (on average 1.3132209405501332) internal successors, (1480), 1168 states have internal predecessors, (1480), 578 states have call successors, (578), 113 states have call predecessors, (578), 112 states have return successors, (575), 570 states have call predecessors, (575), 575 states have call successors, (575) [2022-11-03 03:47:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2633 transitions. [2022-11-03 03:47:25,704 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2633 transitions. Word has length 12 [2022-11-03 03:47:25,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:25,705 INFO L495 AbstractCegarLoop]: Abstraction has 1818 states and 2633 transitions. [2022-11-03 03:47:25,705 INFO L496 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) [2022-11-03 03:47:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2633 transitions. [2022-11-03 03:47:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 03:47:25,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:25,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:25,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:47:25,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1022056733, now seen corresponding path program 1 times [2022-11-03 03:47:25,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:25,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83946510] [2022-11-03 03:47:25,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:25,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:25,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:25,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83946510] [2022-11-03 03:47:25,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83946510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:25,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:25,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:25,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833292935] [2022-11-03 03:47:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:25,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:25,898 INFO L87 Difference]: Start difference. First operand 1818 states and 2633 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) [2022-11-03 03:47:28,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:31,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:32,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:32,091 INFO L93 Difference]: Finished difference Result 4140 states and 5975 transitions. [2022-11-03 03:47:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:32,092 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 [2022-11-03 03:47:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:32,112 INFO L225 Difference]: With dead ends: 4140 [2022-11-03 03:47:32,112 INFO L226 Difference]: Without dead ends: 2319 [2022-11-03 03:47:32,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:32,130 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 1015 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 4782 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:32,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 4782 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 464 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-11-03 03:47:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2022-11-03 03:47:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 2314. [2022-11-03 03:47:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 1416 states have (on average 1.2944915254237288) internal successors, (1833), 1478 states have internal predecessors, (1833), 717 states have call successors, (717), 184 states have call predecessors, (717), 180 states have return successors, (730), 694 states have call predecessors, (730), 704 states have call successors, (730) [2022-11-03 03:47:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3280 transitions. [2022-11-03 03:47:32,338 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3280 transitions. Word has length 13 [2022-11-03 03:47:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:32,338 INFO L495 AbstractCegarLoop]: Abstraction has 2314 states and 3280 transitions. [2022-11-03 03:47:32,338 INFO L496 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) [2022-11-03 03:47:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3280 transitions. [2022-11-03 03:47:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 03:47:32,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:32,354 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:47:32,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:47:32,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1039019793, now seen corresponding path program 1 times [2022-11-03 03:47:32,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:32,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894634632] [2022-11-03 03:47:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:32,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:47:32,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:32,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894634632] [2022-11-03 03:47:32,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894634632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:32,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:32,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:32,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331489593] [2022-11-03 03:47:32,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:32,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:32,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:32,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:32,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:32,651 INFO L87 Difference]: Start difference. First operand 2314 states and 3280 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) [2022-11-03 03:47:35,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:36,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:36,471 INFO L93 Difference]: Finished difference Result 4639 states and 6580 transitions. [2022-11-03 03:47:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:36,472 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 [2022-11-03 03:47:36,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:36,491 INFO L225 Difference]: With dead ends: 4639 [2022-11-03 03:47:36,491 INFO L226 Difference]: Without dead ends: 2329 [2022-11-03 03:47:36,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:36,505 INFO L413 NwaCegarLoop]: 2385 mSDtfsCounter, 12 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s 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, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:36,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4759 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 446 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 03:47:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2022-11-03 03:47:36,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2022-11-03 03:47:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 1427 states have (on average 1.2950245269796776) internal successors, (1848), 1489 states have internal predecessors, (1848), 721 states have call successors, (721), 184 states have call predecessors, (721), 180 states have return successors, (734), 698 states have call predecessors, (734), 708 states have call successors, (734) [2022-11-03 03:47:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3303 transitions. [2022-11-03 03:47:36,686 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3303 transitions. Word has length 46 [2022-11-03 03:47:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:36,686 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 3303 transitions. [2022-11-03 03:47:36,687 INFO L496 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) [2022-11-03 03:47:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3303 transitions. [2022-11-03 03:47:36,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 03:47:36,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:36,689 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:47:36,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:47:36,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:36,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:36,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2061190592, now seen corresponding path program 1 times [2022-11-03 03:47:36,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:36,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684761388] [2022-11-03 03:47:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:36,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:47:36,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:36,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684761388] [2022-11-03 03:47:36,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684761388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:36,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:36,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:36,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761940105] [2022-11-03 03:47:36,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:36,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:36,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:36,972 INFO L87 Difference]: Start difference. First operand 2329 states and 3303 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) [2022-11-03 03:47:39,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:41,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:44,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:44,709 INFO L93 Difference]: Finished difference Result 3846 states and 5394 transitions. [2022-11-03 03:47:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:44,710 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 [2022-11-03 03:47:44,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:44,724 INFO L225 Difference]: With dead ends: 3846 [2022-11-03 03:47:44,724 INFO L226 Difference]: Without dead ends: 1870 [2022-11-03 03:47:44,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:44,739 INFO L413 NwaCegarLoop]: 2217 mSDtfsCounter, 1740 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:44,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 2912 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 336 Invalid, 3 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 03:47:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-11-03 03:47:44,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1868. [2022-11-03 03:47:44,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1136 states have (on average 1.2799295774647887) internal successors, (1454), 1183 states have internal predecessors, (1454), 565 states have call successors, (565), 170 states have call predecessors, (565), 166 states have return successors, (559), 543 states have call predecessors, (559), 550 states have call successors, (559) [2022-11-03 03:47:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2578 transitions. [2022-11-03 03:47:44,970 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2578 transitions. Word has length 46 [2022-11-03 03:47:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:44,971 INFO L495 AbstractCegarLoop]: Abstraction has 1868 states and 2578 transitions. [2022-11-03 03:47:44,971 INFO L496 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) [2022-11-03 03:47:44,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2578 transitions. [2022-11-03 03:47:44,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 03:47:44,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:44,974 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:47:44,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:47:44,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:44,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash -14703897, now seen corresponding path program 1 times [2022-11-03 03:47:44,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:44,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689079709] [2022-11-03 03:47:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:44,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:47:45,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:47:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:47:45,385 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:47:45,385 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:47:45,386 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:47:45,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:47:45,393 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:45,397 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:47:45,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:47:45 BoogieIcfgContainer [2022-11-03 03:47:45,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:47:45,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:47:45,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:47:45,510 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:47:45,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:10" (3/4) ... [2022-11-03 03:47:45,514 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 03:47:45,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:47:45,514 INFO L158 Benchmark]: Toolchain (without parser) took 55308.32ms. Allocated memory was 98.6MB in the beginning and 622.9MB in the end (delta: 524.3MB). Free memory was 67.7MB in the beginning and 368.7MB in the end (delta: -300.9MB). Peak memory consumption was 222.8MB. Max. memory is 16.1GB. [2022-11-03 03:47:45,515 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:47:45,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3499.67ms. Allocated memory was 98.6MB in the beginning and 220.2MB in the end (delta: 121.6MB). Free memory was 67.5MB in the beginning and 127.4MB in the end (delta: -59.9MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. [2022-11-03 03:47:45,516 INFO L158 Benchmark]: Boogie Procedure Inliner took 401.58ms. Allocated memory is still 220.2MB. Free memory was 127.4MB in the beginning and 137.7MB in the end (delta: -10.3MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2022-11-03 03:47:45,516 INFO L158 Benchmark]: Boogie Preprocessor took 313.99ms. Allocated memory is still 220.2MB. Free memory was 137.7MB in the beginning and 101.0MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-03 03:47:45,517 INFO L158 Benchmark]: RCFGBuilder took 15573.18ms. Allocated memory was 220.2MB in the beginning and 455.1MB in the end (delta: 234.9MB). Free memory was 101.0MB in the beginning and 302.0MB in the end (delta: -201.0MB). Peak memory consumption was 230.0MB. Max. memory is 16.1GB. [2022-11-03 03:47:45,517 INFO L158 Benchmark]: TraceAbstraction took 35504.70ms. Allocated memory was 455.1MB in the beginning and 622.9MB in the end (delta: 167.8MB). Free memory was 300.9MB in the beginning and 368.7MB in the end (delta: -67.7MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. [2022-11-03 03:47:45,517 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 622.9MB. Free memory is still 368.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:47:45,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3499.67ms. Allocated memory was 98.6MB in the beginning and 220.2MB in the end (delta: 121.6MB). Free memory was 67.5MB in the beginning and 127.4MB in the end (delta: -59.9MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 401.58ms. Allocated memory is still 220.2MB. Free memory was 127.4MB in the beginning and 137.7MB in the end (delta: -10.3MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 313.99ms. Allocated memory is still 220.2MB. Free memory was 137.7MB in the beginning and 101.0MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * RCFGBuilder took 15573.18ms. Allocated memory was 220.2MB in the beginning and 455.1MB in the end (delta: 234.9MB). Free memory was 101.0MB in the beginning and 302.0MB in the end (delta: -201.0MB). Peak memory consumption was 230.0MB. Max. memory is 16.1GB. * TraceAbstraction took 35504.70ms. Allocated memory was 455.1MB in the beginning and 622.9MB in the end (delta: 167.8MB). Free memory was 300.9MB in the beginning and 368.7MB in the end (delta: -67.7MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 622.9MB. Free memory is still 368.7MB. 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 shiftLeft at line 6296, 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={1074310973:1074310966}, 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={1074310973:1074310966}, 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={1074310973:1074310966}, 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={1074310973:1074310966}, 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={1074310973:1074310966}, 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={1074310973:1074310966}, 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={1074310965:-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={1074310973:1074310966}, 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={1074310965:-17400}, lock={1074310965:-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={1074310973:1074310966}, experimental_zcopytx=0, ldv_func_arg1={1074310965:-17400}, ldv_func_arg1={1074310965:-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={1074310973:1074310966}, experimental_zcopytx=0, ldv_func_arg1={1074310965:-17400}, ldv_func_arg1={1074310965:-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={1074310973:1074310966}, dev={1074310965:-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={1074310973:1074310966}, dev={1074310965:-17416}, dev={1074310965:-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={1074310973:1074310966}, 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={1074310973:1074310966}, dev={1074310965:-17416}, dev={1074310965:-17416}, experimental_zcopytx=0, get_current()={1074310971:-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={1074310973:1074310966}, 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={1074310965:-17416}, n={1074310965:-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={1074310973:1074310966}, 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={1074310965:-17416}, n={1074310965:-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={1074310973:1074310966}, 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={1074310965:-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={1074310973:1074310966}, 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={1074310965:-17416}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={1074310965:0}] [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={1074310973:1074310966}, 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={1074310965:8}, 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={1074310973:1074310966}, 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={1074310965:8}, lock={1074310965:8}, 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={1074310973:1074310966}, 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={1074310973:1074310966}, 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: 35.3s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 31.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 10619 SdHoareTripleChecker+Valid, 30.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10580 mSDsluCounter, 19722 SdHoareTripleChecker+Invalid, 28.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5690 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1936 IncrementalHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 14557 mSDtfsCounter, 1936 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 11 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=2329occurred 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: 1.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s 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 [2022-11-03 03:47:45,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/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_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:47:48,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:47:48,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:47:48,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:47:48,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:47:48,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:47:48,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:47:48,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:47:48,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:47:48,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:47:48,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:47:48,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:47:48,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:47:48,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:47:48,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:47:48,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:47:48,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:47:48,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:47:48,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:47:48,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:47:48,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:47:48,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:47:48,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:47:48,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:47:48,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:47:48,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:47:48,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:47:48,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:47:48,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:47:48,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:47:48,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:47:48,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:47:48,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:47:48,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:47:48,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:47:48,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:47:48,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:47:48,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:47:48,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:47:48,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:47:48,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:47:48,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 03:47:48,340 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:47:48,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:47:48,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:47:48,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:47:48,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:47:48,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:47:48,343 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:47:48,343 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:47:48,343 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:47:48,344 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:47:48,344 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:47:48,344 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:47:48,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:47:48,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:47:48,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:47:48,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:47:48,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:47:48,347 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:47:48,348 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:47:48,348 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:47:48,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:47:48,349 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:47:48,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:47:48,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:47:48,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:47:48,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:47:48,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:47:48,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:47:48,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:47:48,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:47:48,352 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:47:48,352 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:47:48,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:47:48,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:47:48,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:47:48,353 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_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-11-03 03:47:48,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:47:48,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:47:48,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:47:48,763 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:47:48,764 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:47:48,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-03 03:47:48,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/data/d070edb55/2b8d33fdfccc4e9d8bf951927ff00705/FLAGb19831133 [2022-11-03 03:47:50,025 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:47:50,026 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-03 03:47:50,079 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/data/d070edb55/2b8d33fdfccc4e9d8bf951927ff00705/FLAGb19831133 [2022-11-03 03:47:50,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/data/d070edb55/2b8d33fdfccc4e9d8bf951927ff00705 [2022-11-03 03:47:50,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:47:50,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:47:50,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:47:50,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:47:50,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:47:50,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:50" (1/1) ... [2022-11-03 03:47:50,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139bd783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:50, skipping insertion in model container [2022-11-03 03:47:50,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:50" (1/1) ... [2022-11-03 03:47:50,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:47:50,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:47:52,943 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-03 03:47:53,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:53,101 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 03:47:53,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:47:53,680 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_b2d971d1-84c4-483e-9c4f-67050b3e18b2/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-03 03:47:53,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:53,699 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:47:54,400 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_b2d971d1-84c4-483e-9c4f-67050b3e18b2/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-03 03:47:54,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:54,540 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:47:54,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54 WrapperNode [2022-11-03 03:47:54,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:47:54,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:47:54,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:47:54,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:47:54,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:54,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:54,881 INFO L138 Inliner]: procedures = 350, calls = 2627, calls flagged for inlining = 143, calls inlined = 135, statements flattened = 6447 [2022-11-03 03:47:54,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:47:54,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:47:54,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:47:54,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:47:54,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:54,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:54,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:54,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:55,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:55,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:55,298 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:55,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:55,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:47:55,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:47:55,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:47:55,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:47:55,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (1/1) ... [2022-11-03 03:47:55,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:47:55,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:55,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:47:55,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:47:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-11-03 03:47:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-11-03 03:47:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-11-03 03:47:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-11-03 03:47:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-11-03 03:47:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-11-03 03:47:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 03:47:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-11-03 03:47:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-11-03 03:47:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 03:47:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 03:47:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 03:47:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 03:47:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-11-03 03:47:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-11-03 03:47:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:47:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 03:47:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-11-03 03:47:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-11-03 03:47:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:47:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-03 03:47:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-03 03:47:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-11-03 03:47:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-11-03 03:47:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-11-03 03:47:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-11-03 03:47:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-11-03 03:47:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-11-03 03:47:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-03 03:47:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-03 03:47:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 03:47:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 03:47:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 03:47:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 03:47:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-11-03 03:47:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-11-03 03:47:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:47:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:47:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-11-03 03:47:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-11-03 03:47:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:47:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:47:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:47:55,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:47:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-03 03:47:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 03:47:55,480 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 03:47:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-11-03 03:47:55,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-11-03 03:47:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-11-03 03:47:55,482 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-11-03 03:47:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-11-03 03:47:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-11-03 03:47:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-11-03 03:47:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-11-03 03:47:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-11-03 03:47:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-11-03 03:47:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 03:47:55,487 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 03:47:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:47:55,487 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:47:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 03:47:55,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 03:47:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-11-03 03:47:55,488 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-11-03 03:47:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-11-03 03:47:55,489 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-11-03 03:47:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:47:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:47:55,490 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:47:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-11-03 03:47:55,491 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-11-03 03:47:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-11-03 03:47:55,491 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-11-03 03:47:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:47:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:47:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:47:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-11-03 03:47:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-11-03 03:47:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-11-03 03:47:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-11-03 03:47:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 03:47:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 03:47:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 03:47:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:47:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 03:47:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:47:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-11-03 03:47:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-11-03 03:47:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-11-03 03:47:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-11-03 03:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 03:47:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 03:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-03 03:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-11-03 03:47:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-11-03 03:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 03:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 03:47:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-11-03 03:47:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-11-03 03:47:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 03:47:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 03:47:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:47:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:47:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-03 03:47:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-03 03:47:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 03:47:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 03:47:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-11-03 03:47:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-11-03 03:47:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-11-03 03:47:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-11-03 03:47:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-11-03 03:47:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-11-03 03:47:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-03 03:47:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-03 03:47:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 03:47:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 03:47:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 03:47:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 03:47:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-11-03 03:47:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-11-03 03:47:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 03:47:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 03:47:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-11-03 03:47:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-11-03 03:47:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-11-03 03:47:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-11-03 03:47:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-11-03 03:47:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-11-03 03:47:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-11-03 03:47:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-11-03 03:47:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-03 03:47:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-03 03:47:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:47:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:47:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-03 03:47:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-11-03 03:47:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-11-03 03:47:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 03:47:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 03:47:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-11-03 03:47:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-11-03 03:47:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-03 03:47:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-03 03:47:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-11-03 03:47:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-11-03 03:47:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-11-03 03:47:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-11-03 03:47:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-11-03 03:47:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-11-03 03:47:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-11-03 03:47:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-11-03 03:47:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 03:47:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 03:47:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 03:47:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 03:47:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-11-03 03:47:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-11-03 03:47:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 03:47:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 03:47:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 03:47:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 03:47:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:47:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:47:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-11-03 03:47:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-11-03 03:47:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-03 03:47:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-03 03:47:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:47:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-11-03 03:47:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-11-03 03:47:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 03:47:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 03:47:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-11-03 03:47:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-11-03 03:47:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:47:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-11-03 03:47:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-11-03 03:47:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-11-03 03:47:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-11-03 03:47:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-11-03 03:47:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-11-03 03:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 03:47:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 03:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 03:47:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 03:47:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-03 03:47:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-03 03:47:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:47:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:47:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 03:47:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-11-03 03:47:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-11-03 03:47:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 03:47:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 03:47:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-03 03:47:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-03 03:47:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-11-03 03:47:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-11-03 03:47:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:47:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:47:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 03:47:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 03:47:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-11-03 03:47:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-11-03 03:47:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-03 03:47:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-03 03:47:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:47:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:47:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-11-03 03:47:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-11-03 03:47:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-11-03 03:47:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-11-03 03:47:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-03 03:47:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-03 03:47:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-11-03 03:47:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-11-03 03:47:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-11-03 03:47:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-11-03 03:47:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-11-03 03:47:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-11-03 03:47:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 03:47:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 03:47:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:47:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:47:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-11-03 03:47:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-11-03 03:47:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 03:47:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-11-03 03:47:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-11-03 03:47:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-11-03 03:47:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-11-03 03:47:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 03:47:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 03:47:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:47:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:47:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 03:47:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 03:47:56,576 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:47:56,581 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:48:25,036 INFO L769 $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 [2022-11-03 03:48:25,036 INFO L769 $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; [2022-11-03 03:48:25,036 INFO L769 $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 [2022-11-03 03:48:25,037 INFO L769 $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; [2022-11-03 03:48:25,037 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-11-03 03:48:25,037 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-11-03 03:48:25,037 INFO L769 $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; [2022-11-03 03:48:25,037 INFO L769 $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; [2022-11-03 03:48:25,038 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-11-03 03:48:25,038 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-11-03 03:48:25,038 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-11-03 03:48:25,038 INFO L769 $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; [2022-11-03 03:48:25,039 INFO L769 $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; [2022-11-03 03:48:25,039 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-11-03 03:48:25,039 INFO L769 $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; [2022-11-03 03:48:25,039 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-03 03:48:25,040 INFO L769 $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; [2022-11-03 03:48:25,040 INFO L769 $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 [2022-11-03 03:48:25,040 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-03 03:48:25,040 INFO L769 $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; [2022-11-03 03:48:25,040 INFO L769 $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]; [2022-11-03 03:48:25,041 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-03 03:48:25,041 INFO L769 $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; [2022-11-03 03:48:25,041 INFO L769 $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; [2022-11-03 03:48:25,041 INFO L769 $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; [2022-11-03 03:48:42,573 INFO L769 $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 [2022-11-03 03:48:42,573 INFO L769 $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; [2022-11-03 03:48:42,574 INFO L769 $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; [2022-11-03 03:48:42,574 INFO L769 $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; [2022-11-03 03:48:42,574 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-11-03 03:48:42,574 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-11-03 03:48:42,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-11-03 03:48:42,575 INFO L769 $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 [2022-11-03 03:48:42,575 INFO L769 $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; [2022-11-03 03:48:42,575 INFO L769 $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; [2022-11-03 03:48:42,576 INFO L769 $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; [2022-11-03 03:48:42,576 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-03 03:48:42,576 INFO L769 $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; [2022-11-03 03:48:42,576 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-03 03:48:42,576 INFO L769 $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; [2022-11-03 03:48:42,577 INFO L769 $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; [2022-11-03 03:48:42,577 INFO L769 $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; [2022-11-03 03:48:42,577 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-11-03 03:48:42,577 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-11-03 03:48:42,578 INFO L769 $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]; [2022-11-03 03:48:42,578 INFO L769 $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 [2022-11-03 03:48:42,578 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-03 03:48:42,578 INFO L769 $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; [2022-11-03 03:48:42,578 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-11-03 03:48:42,579 INFO L769 $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; [2022-11-03 03:48:51,237 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:48:51,274 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:48:51,274 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:48:51,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:51 BoogieIcfgContainer [2022-11-03 03:48:51,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:48:51,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:48:51,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:48:51,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:48:51,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:47:50" (1/3) ... [2022-11-03 03:48:51,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4103d490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:51, skipping insertion in model container [2022-11-03 03:48:51,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:54" (2/3) ... [2022-11-03 03:48:51,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4103d490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:51, skipping insertion in model container [2022-11-03 03:48:51,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:51" (3/3) ... [2022-11-03 03:48:51,291 INFO L112 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-03 03:48:51,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:48:51,313 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:48:51,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:48:51,465 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36ff709, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:48:51,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:48:51,479 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) [2022-11-03 03:48:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 03:48:51,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:51,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:51,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash -801145376, now seen corresponding path program 1 times [2022-11-03 03:48:51,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:51,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961049477] [2022-11-03 03:48:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:51,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:51,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:51,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:51,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:48:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:52,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:48:52,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:52,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:52,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:52,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961049477] [2022-11-03 03:48:52,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961049477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:52,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:52,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233910151] [2022-11-03 03:48:52,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:52,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:52,657 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 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:48:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:53,159 INFO L93 Difference]: Finished difference Result 4422 states and 6498 transitions. [2022-11-03 03:48:53,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:53,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-03 03:48:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:53,209 INFO L225 Difference]: With dead ends: 4422 [2022-11-03 03:48:53,209 INFO L226 Difference]: Without dead ends: 2207 [2022-11-03 03:48:53,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:53,239 INFO L413 NwaCegarLoop]: 3205 mSDtfsCounter, 3193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-03 03:48:53,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3193 Valid, 3205 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:48:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2022-11-03 03:48:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2022-11-03 03:48:53,494 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) [2022-11-03 03:48:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3194 transitions. [2022-11-03 03:48:53,523 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3194 transitions. Word has length 16 [2022-11-03 03:48:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:53,525 INFO L495 AbstractCegarLoop]: Abstraction has 2207 states and 3194 transitions. [2022-11-03 03:48:53,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:48:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3194 transitions. [2022-11-03 03:48:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:48:53,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:53,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:53,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 03:48:53,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:53,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:53,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:53,751 INFO L85 PathProgramCache]: Analyzing trace with hash 933280137, now seen corresponding path program 1 times [2022-11-03 03:48:53,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:53,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182454632] [2022-11-03 03:48:53,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:53,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:53,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:53,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:53,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:48:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:54,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:48:54,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:54,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:54,751 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:54,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182454632] [2022-11-03 03:48:54,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182454632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:54,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:54,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:54,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056854889] [2022-11-03 03:48:54,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:54,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:54,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:54,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:54,755 INFO L87 Difference]: Start difference. First operand 2207 states and 3194 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:48:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:55,001 INFO L93 Difference]: Finished difference Result 2209 states and 3195 transitions. [2022-11-03 03:48:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:55,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 03:48:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:55,016 INFO L225 Difference]: With dead ends: 2209 [2022-11-03 03:48:55,016 INFO L226 Difference]: Without dead ends: 2206 [2022-11-03 03:48:55,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:55,020 INFO L413 NwaCegarLoop]: 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 [2022-11-03 03:48:55,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3178 Valid, 3191 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:48:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-11-03 03:48:55,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2206. [2022-11-03 03:48:55,174 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) [2022-11-03 03:48:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3192 transitions. [2022-11-03 03:48:55,190 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3192 transitions. Word has length 17 [2022-11-03 03:48:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:55,191 INFO L495 AbstractCegarLoop]: Abstraction has 2206 states and 3192 transitions. [2022-11-03 03:48:55,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:48:55,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3192 transitions. [2022-11-03 03:48:55,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:48:55,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:55,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:55,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:55,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:55,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:55,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:55,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1134098941, now seen corresponding path program 1 times [2022-11-03 03:48:55,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:55,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134828254] [2022-11-03 03:48:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:55,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:55,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:55,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:55,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:48:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:56,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:48:56,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:56,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:56,522 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:56,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134828254] [2022-11-03 03:48:56,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134828254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:56,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:56,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:56,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077074012] [2022-11-03 03:48:56,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:56,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:56,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:56,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:56,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:56,525 INFO L87 Difference]: Start difference. First operand 2206 states and 3192 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:48:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:56,815 INFO L93 Difference]: Finished difference Result 2208 states and 3193 transitions. [2022-11-03 03:48:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:56,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-03 03:48:56,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:56,833 INFO L225 Difference]: With dead ends: 2208 [2022-11-03 03:48:56,833 INFO L226 Difference]: Without dead ends: 2205 [2022-11-03 03:48:56,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:56,837 INFO L413 NwaCegarLoop]: 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 [2022-11-03 03:48:56,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3175 Valid, 3189 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:48:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2022-11-03 03:48:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2205. [2022-11-03 03:48:57,008 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) [2022-11-03 03:48:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3190 transitions. [2022-11-03 03:48:57,024 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3190 transitions. Word has length 18 [2022-11-03 03:48:57,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:57,025 INFO L495 AbstractCegarLoop]: Abstraction has 2205 states and 3190 transitions. [2022-11-03 03:48:57,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:48:57,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3190 transitions. [2022-11-03 03:48:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:48:57,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:57,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:57,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:57,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:57,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash -798336052, now seen corresponding path program 1 times [2022-11-03 03:48:57,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:57,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747693623] [2022-11-03 03:48:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:57,245 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:57,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:57,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:57,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 03:48:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:57,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:48:57,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:58,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:58,175 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:58,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747693623] [2022-11-03 03:48:58,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747693623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:58,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:58,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:58,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295718138] [2022-11-03 03:48:58,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:58,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:58,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:58,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:58,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:58,177 INFO L87 Difference]: Start difference. First operand 2205 states and 3190 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:48:58,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:58,698 INFO L93 Difference]: Finished difference Result 4994 states and 7160 transitions. [2022-11-03 03:48:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:58,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-03 03:48:58,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:58,716 INFO L225 Difference]: With dead ends: 4994 [2022-11-03 03:48:58,717 INFO L226 Difference]: Without dead ends: 2791 [2022-11-03 03:48:58,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:58,729 INFO L413 NwaCegarLoop]: 3540 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, 6266 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 [2022-11-03 03:48:58,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 6266 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:48:58,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2022-11-03 03:48:58,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2788. [2022-11-03 03:48:58,995 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) [2022-11-03 03:48:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3935 transitions. [2022-11-03 03:48:59,014 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3935 transitions. Word has length 19 [2022-11-03 03:48:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:59,015 INFO L495 AbstractCegarLoop]: Abstraction has 2788 states and 3935 transitions. [2022-11-03 03:48:59,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:48:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3935 transitions. [2022-11-03 03:48:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 03:48:59,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:59,031 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:48:59,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:59,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:59,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:59,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:59,249 INFO L85 PathProgramCache]: Analyzing trace with hash -587069341, now seen corresponding path program 1 times [2022-11-03 03:48:59,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:59,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285433695] [2022-11-03 03:48:59,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:59,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:59,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:59,252 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:59,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:49:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:00,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:49:00,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:00,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:00,324 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:00,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285433695] [2022-11-03 03:49:00,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285433695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:00,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:00,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:00,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016567868] [2022-11-03 03:49:00,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:00,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:00,327 INFO L87 Difference]: Start difference. First operand 2788 states and 3935 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:49:00,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:00,720 INFO L93 Difference]: Finished difference Result 5585 states and 7888 transitions. [2022-11-03 03:49:00,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:00,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-11-03 03:49:00,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:00,741 INFO L225 Difference]: With dead ends: 5585 [2022-11-03 03:49:00,741 INFO L226 Difference]: Without dead ends: 2808 [2022-11-03 03:49:00,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:00,758 INFO L413 NwaCegarLoop]: 3172 mSDtfsCounter, 43 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6290 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:00,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 6290 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:49:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2022-11-03 03:49:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2808. [2022-11-03 03:49:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 1946 states have (on average 1.3232271325796505) internal successors, (2575), 2006 states have internal predecessors, (2575), 692 states have call successors, (692), 172 states have call predecessors, (692), 169 states have return successors, (697), 671 states have call predecessors, (697), 683 states have call successors, (697) [2022-11-03 03:49:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 3964 transitions. [2022-11-03 03:49:01,003 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 3964 transitions. Word has length 55 [2022-11-03 03:49:01,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:01,004 INFO L495 AbstractCegarLoop]: Abstraction has 2808 states and 3964 transitions. [2022-11-03 03:49:01,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:49:01,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 3964 transitions. [2022-11-03 03:49:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 03:49:01,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:01,007 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:49:01,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:01,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:01,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:01,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:01,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1997599171, now seen corresponding path program 1 times [2022-11-03 03:49:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:01,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603641151] [2022-11-03 03:49:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:01,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:01,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:01,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:01,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 03:49:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:02,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:49:02,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:49:02,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:02,115 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:02,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603641151] [2022-11-03 03:49:02,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603641151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:02,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:02,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:02,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49560198] [2022-11-03 03:49:02,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:02,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:02,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:02,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:02,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:02,117 INFO L87 Difference]: Start difference. First operand 2808 states and 3964 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) [2022-11-03 03:49:02,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:02,548 INFO L93 Difference]: Finished difference Result 5607 states and 7983 transitions. [2022-11-03 03:49:02,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:02,549 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 [2022-11-03 03:49:02,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:02,569 INFO L225 Difference]: With dead ends: 5607 [2022-11-03 03:49:02,569 INFO L226 Difference]: Without dead ends: 2810 [2022-11-03 03:49:02,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:02,594 INFO L413 NwaCegarLoop]: 3167 mSDtfsCounter, 0 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:02,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6327 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:49:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-11-03 03:49:02,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 2808. [2022-11-03 03:49:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 1946 states have (on average 1.3201438848920863) internal successors, (2569), 2006 states have internal predecessors, (2569), 692 states have call successors, (692), 172 states have call predecessors, (692), 169 states have return successors, (697), 671 states have call predecessors, (697), 683 states have call successors, (697) [2022-11-03 03:49:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 3958 transitions. [2022-11-03 03:49:02,863 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 3958 transitions. Word has length 59 [2022-11-03 03:49:02,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:02,865 INFO L495 AbstractCegarLoop]: Abstraction has 2808 states and 3958 transitions. [2022-11-03 03:49:02,866 INFO L496 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) [2022-11-03 03:49:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 3958 transitions. [2022-11-03 03:49:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 03:49:02,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:02,870 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:49:02,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:03,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:03,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:03,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1160460849, now seen corresponding path program 1 times [2022-11-03 03:49:03,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:03,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156184594] [2022-11-03 03:49:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:03,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:03,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:03,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:03,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 03:49:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:03,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:49:03,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:49:04,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:04,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:04,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156184594] [2022-11-03 03:49:04,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156184594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:04,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:04,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:04,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351448508] [2022-11-03 03:49:04,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:04,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:04,299 INFO L87 Difference]: Start difference. First operand 2808 states and 3958 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-11-03 03:49:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:04,710 INFO L93 Difference]: Finished difference Result 4622 states and 6465 transitions. [2022-11-03 03:49:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:04,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 65 [2022-11-03 03:49:04,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:04,728 INFO L225 Difference]: With dead ends: 4622 [2022-11-03 03:49:04,728 INFO L226 Difference]: Without dead ends: 2330 [2022-11-03 03:49:04,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:04,743 INFO L413 NwaCegarLoop]: 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 [2022-11-03 03:49:04,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2146 Valid, 4068 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:49:04,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2022-11-03 03:49:04,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2330. [2022-11-03 03:49:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 1621 states have (on average 1.3084515731030228) internal successors, (2121), 1666 states have internal predecessors, (2121), 551 states have call successors, (551), 161 states have call predecessors, (551), 157 states have return successors, (538), 531 states have call predecessors, (538), 538 states have call successors, (538) [2022-11-03 03:49:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3210 transitions. [2022-11-03 03:49:04,988 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3210 transitions. Word has length 65 [2022-11-03 03:49:04,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:04,988 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3210 transitions. [2022-11-03 03:49:04,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-11-03 03:49:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3210 transitions. [2022-11-03 03:49:04,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 03:49:04,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:04,993 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:49:05,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:05,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:05,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1430062309, now seen corresponding path program 1 times [2022-11-03 03:49:05,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:05,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203006371] [2022-11-03 03:49:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:05,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:05,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:05,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:05,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 03:49:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:06,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:49:06,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:49:06,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:06,345 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:06,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203006371] [2022-11-03 03:49:06,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203006371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:06,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:06,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:49:06,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688993812] [2022-11-03 03:49:06,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:06,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:49:06,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:49:06,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:49:06,347 INFO L87 Difference]: Start difference. First operand 2330 states and 3210 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 03:49:06,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:06,839 INFO L93 Difference]: Finished difference Result 2360 states and 3251 transitions. [2022-11-03 03:49:06,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:49:06,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 68 [2022-11-03 03:49:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:06,857 INFO L225 Difference]: With dead ends: 2360 [2022-11-03 03:49:06,857 INFO L226 Difference]: Without dead ends: 2350 [2022-11-03 03:49:06,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:49:06,861 INFO L413 NwaCegarLoop]: 2565 mSDtfsCounter, 13 mSDsluCounter, 10246 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 12811 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:06,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 12811 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:49:06,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2022-11-03 03:49:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2335. [2022-11-03 03:49:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 1625 states have (on average 1.3076923076923077) internal successors, (2125), 1670 states have internal predecessors, (2125), 551 states have call successors, (551), 161 states have call predecessors, (551), 158 states have return successors, (541), 532 states have call predecessors, (541), 538 states have call successors, (541) [2022-11-03 03:49:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3217 transitions. [2022-11-03 03:49:07,084 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3217 transitions. Word has length 68 [2022-11-03 03:49:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:07,085 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3217 transitions. [2022-11-03 03:49:07,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 03:49:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3217 transitions. [2022-11-03 03:49:07,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 03:49:07,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:07,088 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:49:07,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:07,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:07,312 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:07,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2110680448, now seen corresponding path program 1 times [2022-11-03 03:49:07,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:07,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079016924] [2022-11-03 03:49:07,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:07,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:07,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:07,316 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:07,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 03:49:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:49:14,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:49:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:49:21,696 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-03 03:49:21,696 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:49:21,697 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:49:21,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:21,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:21,929 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:21,932 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:49:22,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:49:22 BoogieIcfgContainer [2022-11-03 03:49:22,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:49:22,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:49:22,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:49:22,043 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:49:22,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:51" (3/4) ... [2022-11-03 03:49:22,046 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 03:49:22,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:49:22,047 INFO L158 Benchmark]: Toolchain (without parser) took 91805.15ms. Allocated memory was 67.1MB in the beginning and 664.8MB in the end (delta: 597.7MB). Free memory was 41.4MB in the beginning and 223.5MB in the end (delta: -182.0MB). Peak memory consumption was 416.2MB. Max. memory is 16.1GB. [2022-11-03 03:49:22,048 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 48.2MB. Free memory was 27.6MB in the beginning and 27.6MB in the end (delta: 36.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:49:22,048 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4296.88ms. Allocated memory was 67.1MB in the beginning and 176.2MB in the end (delta: 109.1MB). Free memory was 41.3MB in the beginning and 92.6MB in the end (delta: -51.3MB). Peak memory consumption was 91.1MB. Max. memory is 16.1GB. [2022-11-03 03:49:22,049 INFO L158 Benchmark]: Boogie Procedure Inliner took 342.56ms. Allocated memory was 176.2MB in the beginning and 341.8MB in the end (delta: 165.7MB). Free memory was 92.6MB in the beginning and 263.5MB in the end (delta: -170.9MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2022-11-03 03:49:22,049 INFO L158 Benchmark]: Boogie Preprocessor took 493.90ms. Allocated memory is still 341.8MB. Free memory was 263.5MB in the beginning and 224.7MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-03 03:49:22,050 INFO L158 Benchmark]: RCFGBuilder took 55899.48ms. Allocated memory was 341.8MB in the beginning and 664.8MB in the end (delta: 323.0MB). Free memory was 224.7MB in the beginning and 260.7MB in the end (delta: -36.0MB). Peak memory consumption was 288.4MB. Max. memory is 16.1GB. [2022-11-03 03:49:22,051 INFO L158 Benchmark]: TraceAbstraction took 30758.00ms. Allocated memory is still 664.8MB. Free memory was 260.7MB in the beginning and 223.5MB in the end (delta: 37.2MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2022-11-03 03:49:22,051 INFO L158 Benchmark]: Witness Printer took 4.47ms. Allocated memory is still 664.8MB. Free memory is still 223.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:49:22,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 48.2MB. Free memory was 27.6MB in the beginning and 27.6MB in the end (delta: 36.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4296.88ms. Allocated memory was 67.1MB in the beginning and 176.2MB in the end (delta: 109.1MB). Free memory was 41.3MB in the beginning and 92.6MB in the end (delta: -51.3MB). Peak memory consumption was 91.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 342.56ms. Allocated memory was 176.2MB in the beginning and 341.8MB in the end (delta: 165.7MB). Free memory was 92.6MB in the beginning and 263.5MB in the end (delta: -170.9MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 493.90ms. Allocated memory is still 341.8MB. Free memory was 263.5MB in the beginning and 224.7MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * RCFGBuilder took 55899.48ms. Allocated memory was 341.8MB in the beginning and 664.8MB in the end (delta: 323.0MB). Free memory was 224.7MB in the beginning and 260.7MB in the end (delta: -36.0MB). Peak memory consumption was 288.4MB. Max. memory is 16.1GB. * TraceAbstraction took 30758.00ms. Allocated memory is still 664.8MB. Free memory was 260.7MB in the beginning and 223.5MB in the end (delta: 37.2MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. * Witness Printer took 4.47ms. Allocated memory is still 664.8MB. Free memory is still 223.5MB. 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: 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=2, tmp___1=2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10670] 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=2, tmp___1=2147483648, 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={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={2305895925358662721:9223372036804444168}, 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={2305895925358662721:9223372036804444168}, lock={2305895925358662721:9223372036804444168}, 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={2305895925358662721:9223372036804444168}, lock={2305895925358662721:9223372036804444168}, 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={2305895925358662721:9223372036804444168}, ldv_func_arg1={2305895925358662721:9223372036804444168}, 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={2305895925358662721:9223372036804444168}, ldv_func_arg1={2305895925358662721:9223372036804444168}, 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={2305895925358662721:9223372036804444152}, 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={2305895925358662721:9223372036804444152}, dev={2305895925358662721:9223372036804444152}, 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={8796093022208:536871424}, __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__={8796093022208:536871424}, 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={2305895925358662721:9223372036804444152}, dev={2305895925358662721:9223372036804444152}, experimental_zcopytx=0, get_current()={8796093022208:536871424}, 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={2305895925358662721:9223372036804444152}, dev={2305895925358662721:9223372036804444152}, dev->mm={562949953421344:1224486517435531232}, 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={8796093022208:536871424}, tmp->mm={17592186044416:1225031875202908160}, 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={2305895925358662721:9223372036804444152}, dev={2305895925358662721:9223372036804444152}, dev->mm={562949953421344:1224486517435531232}, 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={8796093022208:536871424}, tmp->mm={17592186044416:1225031875202908160}, 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={2305895925358662721:9223372036804444152}, n={2305895925358662721:9223372036804444152}, 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={2305895925358662721:9223372036804444152}, n={2305895925358662721:9223372036804444152}, 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={2305895925358662721:9223372036804444152}, 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={2305895925358662721:9223372036804444152}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={2305895925358662721:9223372036804461568}] [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={2305895925358662721:9223372036804461576}, 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={2305895925358662721:9223372036804461576}, lock={2305895925358662721:9223372036804461576}, 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: 30.5s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12968 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12949 mSDsluCounter, 45347 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20252 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 25095 mSDtfsCounter, 64 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2808occurred in iteration=5, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 8.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 382 NumberOfCodeBlocks, 382 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 524 SizeOfPredicates, 1 NumberOfNonLiveVariables, 5127 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 10/10 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 [2022-11-03 03:49:22,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d971d1-84c4-483e-9c4f-67050b3e18b2/bin/utaipan-7li7fVZpFI/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