./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 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/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_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 14:29:47,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:29:47,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:29:47,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:29:47,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:29:47,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:29:47,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:29:47,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:29:47,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:29:47,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:29:47,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:29:47,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:29:47,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:29:47,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:29:47,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:29:47,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:29:47,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:29:47,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:29:47,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:29:47,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:29:47,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:29:47,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:29:47,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:29:47,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:29:47,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:29:47,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:29:47,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:29:47,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:29:47,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:29:47,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:29:47,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:29:47,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:29:47,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:29:47,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:29:47,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:29:47,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:29:47,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:29:47,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:29:47,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:29:47,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:29:47,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:29:47,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:29:47,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:29:47,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:29:47,533 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:29:47,533 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:29:47,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:29:47,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:29:47,535 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:29:47,535 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:29:47,535 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:29:47,535 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:29:47,536 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:29:47,537 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:29:47,537 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:29:47,537 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:29:47,538 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:29:47,538 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:29:47,538 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:29:47,538 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:29:47,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:29:47,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:29:47,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:29:47,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:29:47,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:29:47,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:29:47,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:29:47,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:29:47,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:29:47,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:29:47,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:29:47,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:29:47,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:29:47,543 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:29:47,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:29:47,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:29:47,544 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:29:47,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:29:47,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:29:47,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:29:47,545 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_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-11-23 14:29:47,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:29:47,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:29:47,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:29:47,918 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:29:47,920 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:29:47,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-23 14:29:50,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:29:51,586 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:29:51,587 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-23 14:29:51,643 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/data/905caff6c/ac04d163ce9a4bf28925ffe66ead2a5e/FLAG4bd07be11 [2022-11-23 14:29:51,662 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/data/905caff6c/ac04d163ce9a4bf28925ffe66ead2a5e [2022-11-23 14:29:51,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:29:51,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:29:51,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:29:51,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:29:51,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:29:51,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:51,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64047662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51, skipping insertion in model container [2022-11-23 14:29:51,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:51,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:29:51,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:29:54,204 WARN L237 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_80f2b361-078a-4c3f-9137-09818f043c36/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-23 14:29:54,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:29:54,338 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:29:54,896 WARN L237 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_80f2b361-078a-4c3f-9137-09818f043c36/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-23 14:29:54,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:29:55,018 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:29:55,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55 WrapperNode [2022-11-23 14:29:55,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:29:55,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:29:55,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:29:55,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:29:55,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,316 INFO L138 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6646 [2022-11-23 14:29:55,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:29:55,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:29:55,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:29:55,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:29:55,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,688 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:29:55,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:29:55,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:29:55,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:29:55,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (1/1) ... [2022-11-23 14:29:55,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:29:55,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:29:55,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:29:55,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:29:55,851 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-11-23 14:29:55,851 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-11-23 14:29:55,851 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-11-23 14:29:55,851 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-11-23 14:29:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-11-23 14:29:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-11-23 14:29:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-11-23 14:29:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-11-23 14:29:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-23 14:29:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-23 14:29:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-11-23 14:29:55,853 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-11-23 14:29:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:29:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-11-23 14:29:55,853 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-11-23 14:29:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:29:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-23 14:29:55,854 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-23 14:29:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-11-23 14:29:55,854 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-11-23 14:29:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-11-23 14:29:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-11-23 14:29:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-11-23 14:29:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-11-23 14:29:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-23 14:29:55,856 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-23 14:29:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-23 14:29:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-23 14:29:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 14:29:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 14:29:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-11-23 14:29:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-11-23 14:29:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:29:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:29:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-11-23 14:29:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-11-23 14:29:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:29:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:29:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:29:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:29:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-23 14:29:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 14:29:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 14:29:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-11-23 14:29:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-11-23 14:29:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-11-23 14:29:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-11-23 14:29:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-11-23 14:29:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-11-23 14:29:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-11-23 14:29:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-11-23 14:29:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-11-23 14:29:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-11-23 14:29:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2022-11-23 14:29:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2022-11-23 14:29:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 14:29:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 14:29:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:29:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:29:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 14:29:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 14:29:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-11-23 14:29:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-11-23 14:29:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-11-23 14:29:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-11-23 14:29:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:29:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:29:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:29:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-11-23 14:29:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-11-23 14:29:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-11-23 14:29:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-11-23 14:29:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:29:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:29:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:29:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-11-23 14:29:55,866 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-11-23 14:29:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-11-23 14:29:55,867 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-11-23 14:29:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:29:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:29:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-11-23 14:29:55,868 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-11-23 14:29:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-11-23 14:29:55,868 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-11-23 14:29:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 14:29:55,869 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 14:29:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-11-23 14:29:55,869 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-11-23 14:29:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-11-23 14:29:55,869 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-11-23 14:29:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 14:29:55,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 14:29:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 14:29:55,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 14:29:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:29:55,871 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:29:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-23 14:29:55,871 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-23 14:29:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 14:29:55,872 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 14:29:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-11-23 14:29:55,872 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-11-23 14:29:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-11-23 14:29:55,873 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-11-23 14:29:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-11-23 14:29:55,873 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-11-23 14:29:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-23 14:29:55,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-23 14:29:55,874 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-23 14:29:55,875 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-23 14:29:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:29:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 14:29:55,878 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 14:29:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-11-23 14:29:55,880 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-11-23 14:29:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 14:29:55,882 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 14:29:55,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:29:55,882 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-11-23 14:29:55,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-11-23 14:29:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:29:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-11-23 14:29:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-11-23 14:29:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-11-23 14:29:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-11-23 14:29:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-11-23 14:29:55,889 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-11-23 14:29:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-23 14:29:55,889 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-23 14:29:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:29:55,890 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:29:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-23 14:29:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-11-23 14:29:55,890 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-11-23 14:29:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:29:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-23 14:29:55,891 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-23 14:29:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-11-23 14:29:55,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-11-23 14:29:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-23 14:29:55,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-23 14:29:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-11-23 14:29:55,891 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-11-23 14:29:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-11-23 14:29:55,892 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-11-23 14:29:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-11-23 14:29:55,892 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-11-23 14:29:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-11-23 14:29:55,892 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-11-23 14:29:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-11-23 14:29:55,893 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-11-23 14:29:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-23 14:29:55,893 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-23 14:29:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-23 14:29:55,893 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-23 14:29:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:29:55,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:29:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-11-23 14:29:55,894 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-11-23 14:29:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-23 14:29:55,894 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-23 14:29:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:29:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-11-23 14:29:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-11-23 14:29:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 14:29:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 14:29:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-11-23 14:29:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-11-23 14:29:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:29:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-11-23 14:29:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-11-23 14:29:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-11-23 14:29:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-11-23 14:29:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-11-23 14:29:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-11-23 14:29:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:29:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-23 14:29:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-23 14:29:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:29:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-23 14:29:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-23 14:29:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:29:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:29:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-11-23 14:29:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-11-23 14:29:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-23 14:29:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-23 14:29:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-23 14:29:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-23 14:29:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-11-23 14:29:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-11-23 14:29:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 14:29:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 14:29:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2022-11-23 14:29:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2022-11-23 14:29:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 14:29:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 14:29:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-11-23 14:29:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-11-23 14:29:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-23 14:29:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-23 14:29:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:29:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:29:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-11-23 14:29:55,901 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-11-23 14:29:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-11-23 14:29:55,901 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-11-23 14:29:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-23 14:29:55,901 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-23 14:29:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-11-23 14:29:55,901 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-11-23 14:29:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-11-23 14:29:55,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-11-23 14:29:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:29:55,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:29:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-11-23 14:29:55,902 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-11-23 14:29:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 14:29:55,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 14:29:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:29:55,903 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:29:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-11-23 14:29:55,903 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-11-23 14:29:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:29:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-11-23 14:29:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-11-23 14:29:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-11-23 14:29:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-11-23 14:29:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-23 14:29:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-23 14:29:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:29:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:29:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:29:55,905 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:29:56,876 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:29:56,879 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:30:01,794 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 [2022-11-23 14:30:01,795 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; [2022-11-23 14:30:01,795 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 [2022-11-23 14:30:01,795 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; [2022-11-23 14:30:01,795 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-11-23 14:30:01,795 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-11-23 14:30:01,795 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; [2022-11-23 14:30:01,795 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; [2022-11-23 14:30:01,796 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-11-23 14:30:01,796 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-11-23 14:30:01,796 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-11-23 14:30:01,796 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; [2022-11-23 14:30:01,796 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; [2022-11-23 14:30:01,796 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-11-23 14:30:01,796 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; [2022-11-23 14:30:01,796 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; [2022-11-23 14:30:01,797 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; [2022-11-23 14:30:01,797 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 [2022-11-23 14:30:01,797 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; [2022-11-23 14:30:01,797 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; [2022-11-23 14:30:01,797 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); [2022-11-23 14:30:01,797 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; [2022-11-23 14:30:01,797 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; [2022-11-23 14:30:01,797 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; [2022-11-23 14:30:01,798 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; [2022-11-23 14:30:04,709 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 [2022-11-23 14:30:04,710 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; [2022-11-23 14:30:04,710 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; [2022-11-23 14:30:04,710 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; [2022-11-23 14:30:04,710 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-11-23 14:30:04,710 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-11-23 14:30:04,710 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-11-23 14:30:04,710 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 [2022-11-23 14:30:04,711 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; [2022-11-23 14:30:04,711 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; [2022-11-23 14:30:04,711 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; [2022-11-23 14:30:04,711 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; [2022-11-23 14:30:04,711 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; [2022-11-23 14:30:04,711 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; [2022-11-23 14:30:04,711 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; [2022-11-23 14:30:04,712 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; [2022-11-23 14:30:04,712 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; [2022-11-23 14:30:04,712 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-11-23 14:30:04,712 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-11-23 14:30:04,712 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); [2022-11-23 14:30:04,712 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 [2022-11-23 14:30:04,712 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; [2022-11-23 14:30:04,713 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; [2022-11-23 14:30:04,713 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-11-23 14:30:04,713 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; [2022-11-23 14:30:06,003 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:30:07,509 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:30:07,509 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:30:07,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:07 BoogieIcfgContainer [2022-11-23 14:30:07,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:30:07,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:30:07,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:30:07,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:30:07,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:29:51" (1/3) ... [2022-11-23 14:30:07,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9aadd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:07, skipping insertion in model container [2022-11-23 14:30:07,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:55" (2/3) ... [2022-11-23 14:30:07,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9aadd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:07, skipping insertion in model container [2022-11-23 14:30:07,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:07" (3/3) ... [2022-11-23 14:30:07,525 INFO L112 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-23 14:30:07,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:30:07,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:30:07,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:30:07,724 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;@848d4e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:30:07,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:30:07,734 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) [2022-11-23 14:30:07,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:30:07,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:07,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:30:07,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:30:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:07,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1086771212, now seen corresponding path program 1 times [2022-11-23 14:30:07,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:07,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926538691] [2022-11-23 14:30:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:07,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:30:08,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:08,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926538691] [2022-11-23 14:30:08,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926538691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:08,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:08,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:30:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878797769] [2022-11-23 14:30:08,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:08,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:30:08,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:30:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:30:08,288 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) [2022-11-23 14:30:10,625 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 [] [2022-11-23 14:30:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:11,409 INFO L93 Difference]: Finished difference Result 3622 states and 5351 transitions. [2022-11-23 14:30:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:30:11,412 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 [2022-11-23 14:30:11,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:11,455 INFO L225 Difference]: With dead ends: 3622 [2022-11-23 14:30:11,455 INFO L226 Difference]: Without dead ends: 1806 [2022-11-23 14:30:11,473 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 [2022-11-23 14:30:11,479 INFO L413 NwaCegarLoop]: 2415 mSDtfsCounter, 2628 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:11,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2630 Valid, 2415 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 14:30:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2022-11-23 14:30:11,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1806. [2022-11-23 14:30:11,712 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) [2022-11-23 14:30:11,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2626 transitions. [2022-11-23 14:30:11,737 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2626 transitions. Word has length 10 [2022-11-23 14:30:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:11,740 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2626 transitions. [2022-11-23 14:30:11,740 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) [2022-11-23 14:30:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2626 transitions. [2022-11-23 14:30:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:30:11,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:11,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:30:11,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:30:11,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:30:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:11,744 INFO L85 PathProgramCache]: Analyzing trace with hash 668800319, now seen corresponding path program 1 times [2022-11-23 14:30:11,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:11,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897786213] [2022-11-23 14:30:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:11,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:30:11,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:11,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897786213] [2022-11-23 14:30:11,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897786213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:11,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:11,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:30:11,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961392071] [2022-11-23 14:30:11,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:11,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:30:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:30:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:30:11,969 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) [2022-11-23 14:30:14,230 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 [] [2022-11-23 14:30:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:14,894 INFO L93 Difference]: Finished difference Result 1808 states and 2627 transitions. [2022-11-23 14:30:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:30:14,895 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 [2022-11-23 14:30:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:14,907 INFO L225 Difference]: With dead ends: 1808 [2022-11-23 14:30:14,907 INFO L226 Difference]: Without dead ends: 1805 [2022-11-23 14:30:14,909 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 [2022-11-23 14:30:14,911 INFO L413 NwaCegarLoop]: 2404 mSDtfsCounter, 2615 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:14,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 2404 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 219 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 14:30:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2022-11-23 14:30:15,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1805. [2022-11-23 14:30:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1120 states have (on average 1.3160714285714286) internal successors, (1474), 1162 states have internal predecessors, (1474), 577 states have call successors, (577), 108 states have call predecessors, (577), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-11-23 14:30:15,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2624 transitions. [2022-11-23 14:30:15,151 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2624 transitions. Word has length 11 [2022-11-23 14:30:15,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:15,151 INFO L495 AbstractCegarLoop]: Abstraction has 1805 states and 2624 transitions. [2022-11-23 14:30:15,152 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) [2022-11-23 14:30:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2624 transitions. [2022-11-23 14:30:15,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:30:15,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:15,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:30:15,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:30:15,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:30:15,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:15,155 INFO L85 PathProgramCache]: Analyzing trace with hash -743052201, now seen corresponding path program 1 times [2022-11-23 14:30:15,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:15,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718795310] [2022-11-23 14:30:15,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:15,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:30:15,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718795310] [2022-11-23 14:30:15,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718795310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:15,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:15,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:30:15,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524744715] [2022-11-23 14:30:15,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:15,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:30:15,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:15,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:30:15,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:30:15,338 INFO L87 Difference]: Start difference. First operand 1805 states and 2624 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:30:17,532 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 [] [2022-11-23 14:30:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:18,113 INFO L93 Difference]: Finished difference Result 1807 states and 2625 transitions. [2022-11-23 14:30:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:30:18,114 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 [2022-11-23 14:30:18,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:18,123 INFO L225 Difference]: With dead ends: 1807 [2022-11-23 14:30:18,124 INFO L226 Difference]: Without dead ends: 1804 [2022-11-23 14:30:18,125 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 [2022-11-23 14:30:18,126 INFO L413 NwaCegarLoop]: 2402 mSDtfsCounter, 2612 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:18,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2614 Valid, 2402 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 219 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 14:30:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2022-11-23 14:30:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1804. [2022-11-23 14:30:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1120 states have (on average 1.3151785714285715) internal successors, (1473), 1161 states have internal predecessors, (1473), 576 states have call successors, (576), 108 states have call predecessors, (576), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-11-23 14:30:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2622 transitions. [2022-11-23 14:30:18,251 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2622 transitions. Word has length 12 [2022-11-23 14:30:18,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:18,251 INFO L495 AbstractCegarLoop]: Abstraction has 1804 states and 2622 transitions. [2022-11-23 14:30:18,252 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) [2022-11-23 14:30:18,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2622 transitions. [2022-11-23 14:30:18,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:30:18,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:18,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:30:18,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:30:18,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:30:18,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:18,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1560802494, now seen corresponding path program 1 times [2022-11-23 14:30:18,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:18,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538589937] [2022-11-23 14:30:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:18,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:30:18,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:18,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538589937] [2022-11-23 14:30:18,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538589937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:18,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:18,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:30:18,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904679478] [2022-11-23 14:30:18,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:18,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:30:18,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:30:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:30:18,378 INFO L87 Difference]: Start difference. First operand 1804 states and 2622 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:30:20,616 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 [] [2022-11-23 14:30:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:21,854 INFO L93 Difference]: Finished difference Result 4135 states and 5979 transitions. [2022-11-23 14:30:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:30:21,860 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 [2022-11-23 14:30:21,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:21,877 INFO L225 Difference]: With dead ends: 4135 [2022-11-23 14:30:21,877 INFO L226 Difference]: Without dead ends: 2328 [2022-11-23 14:30:21,888 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 [2022-11-23 14:30:21,893 INFO L413 NwaCegarLoop]: 2761 mSDtfsCounter, 1045 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 4813 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:21,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 4813 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 463 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-23 14:30:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2022-11-23 14:30:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2324. [2022-11-23 14:30:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 1424 states have (on average 1.2949438202247192) internal successors, (1844), 1486 states have internal predecessors, (1844), 721 states have call successors, (721), 182 states have call predecessors, (721), 178 states have return successors, (731), 698 states have call predecessors, (731), 708 states have call successors, (731) [2022-11-23 14:30:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 3296 transitions. [2022-11-23 14:30:22,107 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 3296 transitions. Word has length 13 [2022-11-23 14:30:22,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:22,107 INFO L495 AbstractCegarLoop]: Abstraction has 2324 states and 3296 transitions. [2022-11-23 14:30:22,107 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) [2022-11-23 14:30:22,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 3296 transitions. [2022-11-23 14:30:22,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 14:30:22,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:22,120 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] [2022-11-23 14:30:22,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:30:22,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:30:22,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:22,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1855027896, now seen corresponding path program 1 times [2022-11-23 14:30:22,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:22,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085120419] [2022-11-23 14:30:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:22,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:30:22,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:22,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085120419] [2022-11-23 14:30:22,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085120419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:22,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:22,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:30:22,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370662825] [2022-11-23 14:30:22,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:22,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:30:22,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:22,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:30:22,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:30:22,506 INFO L87 Difference]: Start difference. First operand 2324 states and 3296 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) [2022-11-23 14:30:25,137 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 [] [2022-11-23 14:30:26,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:26,129 INFO L93 Difference]: Finished difference Result 3850 states and 5396 transitions. [2022-11-23 14:30:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:30:26,130 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 [2022-11-23 14:30:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:26,145 INFO L225 Difference]: With dead ends: 3850 [2022-11-23 14:30:26,145 INFO L226 Difference]: Without dead ends: 1864 [2022-11-23 14:30:26,158 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 [2022-11-23 14:30:26,159 INFO L413 NwaCegarLoop]: 2240 mSDtfsCounter, 1761 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:26,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 2935 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-23 14:30:26,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-11-23 14:30:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1863. [2022-11-23 14:30:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1133 states have (on average 1.2797881729920564) internal successors, (1450), 1179 states have internal predecessors, (1450), 565 states have call successors, (565), 169 states have call predecessors, (565), 164 states have return successors, (550), 543 states have call predecessors, (550), 550 states have call successors, (550) [2022-11-23 14:30:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2565 transitions. [2022-11-23 14:30:26,346 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2565 transitions. Word has length 46 [2022-11-23 14:30:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:26,346 INFO L495 AbstractCegarLoop]: Abstraction has 1863 states and 2565 transitions. [2022-11-23 14:30:26,347 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) [2022-11-23 14:30:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2565 transitions. [2022-11-23 14:30:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 14:30:26,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:26,351 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] [2022-11-23 14:30:26,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:30:26,351 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:30:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 965260543, now seen corresponding path program 1 times [2022-11-23 14:30:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:26,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58732778] [2022-11-23 14:30:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:30:26,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:30:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:30:26,904 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:30:26,905 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:30:26,906 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:30:26,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:30:26,913 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-23 14:30:26,918 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:30:27,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:30:27 BoogieIcfgContainer [2022-11-23 14:30:27,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:30:27,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:30:27,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:30:27,022 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:30:27,023 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:07" (3/4) ... [2022-11-23 14:30:27,026 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:30:27,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:30:27,027 INFO L158 Benchmark]: Toolchain (without parser) took 35360.50ms. Allocated memory was 192.9MB in the beginning and 834.7MB in the end (delta: 641.7MB). Free memory was 153.0MB in the beginning and 496.9MB in the end (delta: -343.9MB). Peak memory consumption was 296.9MB. Max. memory is 16.1GB. [2022-11-23 14:30:27,027 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 134.2MB. Free memory is still 109.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:30:27,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3348.81ms. Allocated memory was 192.9MB in the beginning and 276.8MB in the end (delta: 83.9MB). Free memory was 152.1MB in the beginning and 176.5MB in the end (delta: -24.3MB). Peak memory consumption was 103.5MB. Max. memory is 16.1GB. [2022-11-23 14:30:27,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 297.10ms. Allocated memory is still 276.8MB. Free memory was 176.5MB in the beginning and 141.9MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-23 14:30:27,029 INFO L158 Benchmark]: Boogie Preprocessor took 440.45ms. Allocated memory is still 276.8MB. Free memory was 141.9MB in the beginning and 168.1MB in the end (delta: -26.2MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2022-11-23 14:30:27,029 INFO L158 Benchmark]: RCFGBuilder took 11756.04ms. Allocated memory was 276.8MB in the beginning and 541.1MB in the end (delta: 264.2MB). Free memory was 168.1MB in the beginning and 147.3MB in the end (delta: 20.8MB). Peak memory consumption was 288.1MB. Max. memory is 16.1GB. [2022-11-23 14:30:27,030 INFO L158 Benchmark]: TraceAbstraction took 19502.84ms. Allocated memory was 541.1MB in the beginning and 834.7MB in the end (delta: 293.6MB). Free memory was 147.3MB in the beginning and 496.9MB in the end (delta: -349.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:30:27,030 INFO L158 Benchmark]: Witness Printer took 4.87ms. Allocated memory is still 834.7MB. Free memory is still 496.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:30:27,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 134.2MB. Free memory is still 109.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3348.81ms. Allocated memory was 192.9MB in the beginning and 276.8MB in the end (delta: 83.9MB). Free memory was 152.1MB in the beginning and 176.5MB in the end (delta: -24.3MB). Peak memory consumption was 103.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 297.10ms. Allocated memory is still 276.8MB. Free memory was 176.5MB in the beginning and 141.9MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 440.45ms. Allocated memory is still 276.8MB. Free memory was 141.9MB in the beginning and 168.1MB in the end (delta: -26.2MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. * RCFGBuilder took 11756.04ms. Allocated memory was 276.8MB in the beginning and 541.1MB in the end (delta: 264.2MB). Free memory was 168.1MB in the beginning and 147.3MB in the end (delta: 20.8MB). Peak memory consumption was 288.1MB. Max. memory is 16.1GB. * TraceAbstraction took 19502.84ms. Allocated memory was 541.1MB in the beginning and 834.7MB in the end (delta: 293.6MB). Free memory was 147.3MB in the beginning and 496.9MB in the end (delta: -349.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.87ms. Allocated memory is still 834.7MB. Free memory is still 496.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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={4294967303:4294967308}, 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={4294967303:4294967308}, 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: [L10673] case 3: VAL [__this_module={4294967303:4294967308}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={4294967303:4294967308}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10675] CALL vhost_net_compat_ioctl(var_group2, var_vhost_net_compat_ioctl_28_p1, var_vhost_net_compat_ioctl_28_p2) [L10582] void *tmp ; [L10583] long tmp___0 ; [L10585] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L9300] return ((void *)((unsigned long )uptr)); [L10585] RET, EXPR compat_ptr((compat_uptr_t )arg) [L10585] tmp = compat_ptr((compat_uptr_t )arg) [L10586] CALL vhost_net_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, __this_module={4294967303:4294967308}, 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 [#in~lock={4294967306:-17400}, \old(ldv_mutex_mutex)=1, __this_module={4294967303:4294967308}, 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] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [#in~lock={4294967306:-17400}, \old(ldv_mutex_mutex)=1, __this_module={4294967303:4294967308}, 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={4294967306:-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 [#in~ldv_func_arg1={4294967306:-17400}, \old(ldv_mutex_mutex)=1, __this_module={4294967303:4294967308}, experimental_zcopytx=0, ldv_func_arg1={4294967306:-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 [#in~ldv_func_arg1={4294967306:-17400}, \old(ldv_mutex_mutex)=1, __this_module={4294967303:4294967308}, experimental_zcopytx=0, ldv_func_arg1={4294967306:-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 [#in~dev={4294967306:-17416}, \old(ldv_mutex_mutex)=1, __this_module={4294967303:4294967308}, 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 [#in~dev={4294967306:-17416}, \old(ldv_mutex_mutex)=1, __this_module={4294967303:4294967308}, dev={4294967306:-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={4294967303:4294967308}, 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 [#in~dev={4294967306:-17416}, \old(ldv_mutex_mutex)=1, __this_module={4294967303:4294967308}, dev={4294967306:-17416}, experimental_zcopytx=0, get_current()={4294967305:-3}, 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] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [#in~n={4294967306:-17416}, \old(ldv_mutex_mutex)=1, __this_module={4294967303:4294967308}, 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={4294967306:-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 [#in~n={4294967306:-17416}, \old(ldv_mutex_mutex)=1, __this_module={4294967303:4294967308}, 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={4294967306:-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 [#in~n={4294967306:-17416}, #in~rx_sock={220:0}, #in~tx_sock={217:0}, \old(ldv_mutex_mutex)=2, __this_module={4294967303:4294967308}, 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] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [#in~n={4294967306:-17416}, #in~vq={4294967306:0}, \old(ldv_mutex_mutex)=2, __this_module={4294967303:4294967308}, 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] [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 [#in~lock={4294967306:8}, \old(ldv_mutex_mutex)=2, __this_module={4294967303:4294967308}, 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] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [#in~lock={4294967306:8}, \old(ldv_mutex_mutex)=2, __this_module={4294967303:4294967308}, 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={4294967306:8}, 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={4294967303:4294967308}, 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={4294967303:4294967308}, 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: 19.3s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 10670 SdHoareTripleChecker+Valid, 14.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10661 mSDsluCounter, 14969 SdHoareTripleChecker+Invalid, 14.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2747 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1460 IncrementalHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 12222 mSDtfsCounter, 1460 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2324occurred in iteration=4, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 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 [2022-11-23 14:30:27,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/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_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 14:30:29,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:30:29,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:30:29,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:30:29,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:30:29,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:30:29,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:30:29,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:30:29,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:30:29,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:30:29,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:30:29,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:30:29,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:30:29,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:30:29,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:30:29,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:30:29,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:30:29,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:30:29,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:30:29,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:30:29,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:30:29,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:30:29,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:30:29,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:30:29,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:30:29,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:30:29,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:30:29,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:30:29,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:30:29,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:30:29,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:30:29,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:30:29,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:30:29,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:30:29,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:30:29,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:30:29,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:30:29,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:30:29,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:30:29,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:30:29,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:30:29,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 14:30:29,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:30:29,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:30:29,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:30:29,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:30:29,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:30:29,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:30:29,872 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:30:29,872 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:30:29,872 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:30:29,872 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:30:29,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:30:29,873 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:30:29,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:30:29,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:30:29,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:30:29,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:30:29,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:30:29,875 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:30:29,875 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:30:29,876 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:30:29,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:30:29,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:30:29,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:30:29,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:30:29,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:30:29,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:30:29,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:30:29,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:30:29,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:30:29,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:30:29,878 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:30:29,879 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:30:29,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:30:29,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:30:29,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:30:29,880 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_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-11-23 14:30:30,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:30:30,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:30:30,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:30:30,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:30:30,308 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:30:30,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-23 14:30:33,372 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:30:34,059 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:30:34,060 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-23 14:30:34,112 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/data/cc6edcae3/5af8d1fade264308af850cce6eb70f09/FLAG31f4bc7ef [2022-11-23 14:30:34,134 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/data/cc6edcae3/5af8d1fade264308af850cce6eb70f09 [2022-11-23 14:30:34,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:30:34,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:30:34,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:30:34,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:30:34,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:30:34,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:34" (1/1) ... [2022-11-23 14:30:34,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c722d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:34, skipping insertion in model container [2022-11-23 14:30:34,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:34" (1/1) ... [2022-11-23 14:30:34,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:30:34,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:30:36,859 WARN L237 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_80f2b361-078a-4c3f-9137-09818f043c36/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-23 14:30:36,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:30:37,012 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 14:30:37,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:30:37,458 WARN L237 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_80f2b361-078a-4c3f-9137-09818f043c36/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-23 14:30:37,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:30:37,500 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:30:38,020 WARN L237 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_80f2b361-078a-4c3f-9137-09818f043c36/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-23 14:30:38,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:30:38,109 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:30:38,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38 WrapperNode [2022-11-23 14:30:38,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:30:38,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:30:38,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:30:38,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:30:38,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,449 INFO L138 Inliner]: procedures = 350, calls = 2627, calls flagged for inlining = 143, calls inlined = 135, statements flattened = 6427 [2022-11-23 14:30:38,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:30:38,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:30:38,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:30:38,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:30:38,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:30:38,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:30:38,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:30:38,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:30:38,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (1/1) ... [2022-11-23 14:30:38,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:30:38,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:30:38,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:30:38,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:30:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-11-23 14:30:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-11-23 14:30:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-11-23 14:30:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-11-23 14:30:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-11-23 14:30:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-11-23 14:30:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-23 14:30:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-11-23 14:30:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-11-23 14:30:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-23 14:30:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-23 14:30:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-23 14:30:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 14:30:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-11-23 14:30:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-11-23 14:30:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:30:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-23 14:30:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-11-23 14:30:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-11-23 14:30:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:30:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-23 14:30:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-23 14:30:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-11-23 14:30:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-11-23 14:30:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-11-23 14:30:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-11-23 14:30:39,021 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-11-23 14:30:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-11-23 14:30:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-23 14:30:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-23 14:30:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-23 14:30:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-23 14:30:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 14:30:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 14:30:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-11-23 14:30:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-11-23 14:30:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:30:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:30:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-11-23 14:30:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-11-23 14:30:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:30:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:30:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:30:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:30:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-23 14:30:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 14:30:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 14:30:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-11-23 14:30:39,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-11-23 14:30:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-11-23 14:30:39,027 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-11-23 14:30:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-11-23 14:30:39,028 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-11-23 14:30:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-11-23 14:30:39,028 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-11-23 14:30:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-11-23 14:30:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-11-23 14:30:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 14:30:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 14:30:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:30:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:30:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 14:30:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 14:30:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-11-23 14:30:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-11-23 14:30:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-11-23 14:30:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-11-23 14:30:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:30:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:30:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:30:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-11-23 14:30:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-11-23 14:30:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-11-23 14:30:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-11-23 14:30:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:30:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:30:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:30:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-11-23 14:30:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-11-23 14:30:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-11-23 14:30:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-11-23 14:30:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-23 14:30:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-23 14:30:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-23 14:30:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:30:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 14:30:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:30:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-11-23 14:30:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-11-23 14:30:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-11-23 14:30:39,038 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-11-23 14:30:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 14:30:39,039 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 14:30:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-23 14:30:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-11-23 14:30:39,040 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-11-23 14:30:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:30:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-23 14:30:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-11-23 14:30:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-11-23 14:30:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 14:30:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 14:30:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:30:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:30:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-23 14:30:39,042 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-23 14:30:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 14:30:39,042 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 14:30:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-11-23 14:30:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-11-23 14:30:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-11-23 14:30:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-11-23 14:30:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-11-23 14:30:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-11-23 14:30:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-23 14:30:39,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-23 14:30:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-23 14:30:39,049 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-23 14:30:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 14:30:39,055 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 14:30:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-11-23 14:30:39,055 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-11-23 14:30:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 14:30:39,055 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 14:30:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-11-23 14:30:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-11-23 14:30:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-11-23 14:30:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-11-23 14:30:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-11-23 14:30:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-11-23 14:30:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-11-23 14:30:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-11-23 14:30:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-23 14:30:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-23 14:30:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:30:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:30:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-23 14:30:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-11-23 14:30:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-11-23 14:30:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-23 14:30:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-23 14:30:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-11-23 14:30:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-11-23 14:30:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-23 14:30:39,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-23 14:30:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-11-23 14:30:39,059 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-11-23 14:30:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-11-23 14:30:39,059 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-11-23 14:30:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-11-23 14:30:39,060 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-11-23 14:30:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-11-23 14:30:39,060 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-11-23 14:30:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-23 14:30:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-23 14:30:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 14:30:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-23 14:30:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-11-23 14:30:39,061 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-11-23 14:30:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-23 14:30:39,061 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-23 14:30:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-23 14:30:39,061 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-23 14:30:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:30:39,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:30:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-11-23 14:30:39,062 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-11-23 14:30:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-23 14:30:39,063 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-23 14:30:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:30:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-11-23 14:30:39,063 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-11-23 14:30:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 14:30:39,063 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 14:30:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-11-23 14:30:39,064 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-11-23 14:30:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:30:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-11-23 14:30:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-11-23 14:30:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-11-23 14:30:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-11-23 14:30:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-11-23 14:30:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-11-23 14:30:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:30:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-23 14:30:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-23 14:30:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:30:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-23 14:30:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-23 14:30:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-23 14:30:39,068 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-23 14:30:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:30:39,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:30:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-23 14:30:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-11-23 14:30:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-11-23 14:30:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-23 14:30:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-23 14:30:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-23 14:30:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-23 14:30:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-11-23 14:30:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-11-23 14:30:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 14:30:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 14:30:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 14:30:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 14:30:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-11-23 14:30:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-11-23 14:30:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-23 14:30:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-23 14:30:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:30:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:30:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-11-23 14:30:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-11-23 14:30:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-11-23 14:30:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-11-23 14:30:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-23 14:30:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-23 14:30:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-11-23 14:30:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-11-23 14:30:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-11-23 14:30:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-11-23 14:30:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-11-23 14:30:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-11-23 14:30:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 14:30:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 14:30:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:30:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:30:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-11-23 14:30:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-11-23 14:30:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-23 14:30:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-11-23 14:30:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-11-23 14:30:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-11-23 14:30:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-11-23 14:30:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-23 14:30:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-23 14:30:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:30:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:30:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:30:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:30:40,133 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:30:40,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:31:08,328 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 [2022-11-23 14:31:08,329 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; [2022-11-23 14:31:08,329 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 [2022-11-23 14:31:08,329 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; [2022-11-23 14:31:08,329 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-11-23 14:31:08,329 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-11-23 14:31:08,329 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; [2022-11-23 14:31:08,329 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; [2022-11-23 14:31:08,329 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-11-23 14:31:08,330 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-11-23 14:31:08,330 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-11-23 14:31:08,330 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; [2022-11-23 14:31:08,330 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; [2022-11-23 14:31:08,330 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-11-23 14:31:08,330 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; [2022-11-23 14:31:08,330 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; [2022-11-23 14:31:08,330 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; [2022-11-23 14:31:08,331 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 [2022-11-23 14:31:08,331 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; [2022-11-23 14:31:08,331 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; [2022-11-23 14:31:08,331 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]; [2022-11-23 14:31:08,331 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; [2022-11-23 14:31:08,331 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; [2022-11-23 14:31:08,331 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; [2022-11-23 14:31:08,331 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; [2022-11-23 14:31:26,540 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 [2022-11-23 14:31:26,541 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; [2022-11-23 14:31:26,541 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; [2022-11-23 14:31:26,541 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; [2022-11-23 14:31:26,541 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-11-23 14:31:26,541 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-11-23 14:31:26,541 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-11-23 14:31:26,542 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 [2022-11-23 14:31:26,542 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; [2022-11-23 14:31:26,542 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; [2022-11-23 14:31:26,542 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; [2022-11-23 14:31:26,542 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; [2022-11-23 14:31:26,542 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; [2022-11-23 14:31:26,542 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; [2022-11-23 14:31:26,542 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; [2022-11-23 14:31:26,543 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; [2022-11-23 14:31:26,543 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; [2022-11-23 14:31:26,543 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-11-23 14:31:26,543 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-11-23 14:31:26,543 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]; [2022-11-23 14:31:26,543 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 [2022-11-23 14:31:26,543 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; [2022-11-23 14:31:26,543 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; [2022-11-23 14:31:26,544 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-11-23 14:31:26,544 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; [2022-11-23 14:31:37,284 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:31:37,319 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:31:37,319 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:31:37,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:37 BoogieIcfgContainer [2022-11-23 14:31:37,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:31:37,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:31:37,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:31:37,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:31:37,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:30:34" (1/3) ... [2022-11-23 14:31:37,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aac9ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:37, skipping insertion in model container [2022-11-23 14:31:37,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:38" (2/3) ... [2022-11-23 14:31:37,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aac9ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:37, skipping insertion in model container [2022-11-23 14:31:37,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:37" (3/3) ... [2022-11-23 14:31:37,337 INFO L112 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-23 14:31:37,356 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:31:37,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:31:37,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:31:37,473 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;@6c9bc375, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:31:37,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:31:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 2200 states, 1522 states have (on average 1.3442838370565047) internal successors, (2046), 1568 states have internal predecessors, (2046), 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) [2022-11-23 14:31:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:31:37,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:37,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:31:37,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:37,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1066115318, now seen corresponding path program 1 times [2022-11-23 14:31:37,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:31:37,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559188753] [2022-11-23 14:31:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:37,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:37,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:31:37,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:31:37,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 14:31:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:38,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:31:38,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:31:38,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:31:38,719 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:31:38,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559188753] [2022-11-23 14:31:38,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559188753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:38,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:38,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:31:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175432764] [2022-11-23 14:31:38,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:38,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:31:38,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:31:38,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:31:38,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:38,797 INFO L87 Difference]: Start difference. First operand has 2200 states, 1522 states have (on average 1.3442838370565047) internal successors, (2046), 1568 states have internal predecessors, (2046), 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) [2022-11-23 14:31:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:39,337 INFO L93 Difference]: Finished difference Result 4386 states and 6444 transitions. [2022-11-23 14:31:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:31:39,340 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 [2022-11-23 14:31:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:39,378 INFO L225 Difference]: With dead ends: 4386 [2022-11-23 14:31:39,378 INFO L226 Difference]: Without dead ends: 2189 [2022-11-23 14:31:39,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:39,400 INFO L413 NwaCegarLoop]: 3178 mSDtfsCounter, 3166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3166 SdHoareTripleChecker+Valid, 3178 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 [2022-11-23 14:31:39,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3166 Valid, 3178 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:31:39,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2022-11-23 14:31:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2189. [2022-11-23 14:31:39,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 1514 states have (on average 1.3408190224570673) internal successors, (2030), 1557 states have internal predecessors, (2030), 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) [2022-11-23 14:31:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 3167 transitions. [2022-11-23 14:31:39,688 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 3167 transitions. Word has length 16 [2022-11-23 14:31:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:39,691 INFO L495 AbstractCegarLoop]: Abstraction has 2189 states and 3167 transitions. [2022-11-23 14:31:39,691 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) [2022-11-23 14:31:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 3167 transitions. [2022-11-23 14:31:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:31:39,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:39,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:31:39,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:31:39,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:39,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:39,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1309145204, now seen corresponding path program 1 times [2022-11-23 14:31:39,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:31:39,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601115759] [2022-11-23 14:31:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:39,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:39,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:31:39,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:31:39,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 14:31:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:40,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:31:40,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:31:40,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:31:40,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:31:40,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601115759] [2022-11-23 14:31:40,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601115759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:40,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:40,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:31:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046713125] [2022-11-23 14:31:40,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:40,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:31:40,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:31:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:31:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:40,883 INFO L87 Difference]: Start difference. First operand 2189 states and 3167 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) [2022-11-23 14:31:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:41,124 INFO L93 Difference]: Finished difference Result 2191 states and 3168 transitions. [2022-11-23 14:31:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:31:41,124 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 [2022-11-23 14:31:41,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:41,138 INFO L225 Difference]: With dead ends: 2191 [2022-11-23 14:31:41,138 INFO L226 Difference]: Without dead ends: 2188 [2022-11-23 14:31:41,143 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 [2022-11-23 14:31:41,145 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 3151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3151 SdHoareTripleChecker+Valid, 3164 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 [2022-11-23 14:31:41,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3151 Valid, 3164 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:31:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2022-11-23 14:31:41,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2188. [2022-11-23 14:31:41,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1514 states have (on average 1.3401585204755615) internal successors, (2029), 1556 states have internal predecessors, (2029), 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) [2022-11-23 14:31:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3165 transitions. [2022-11-23 14:31:41,301 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3165 transitions. Word has length 17 [2022-11-23 14:31:41,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:41,302 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3165 transitions. [2022-11-23 14:31:41,302 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) [2022-11-23 14:31:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3165 transitions. [2022-11-23 14:31:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 14:31:41,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:41,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:31:41,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:31:41,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:41,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:41,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1927782221, now seen corresponding path program 1 times [2022-11-23 14:31:41,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:31:41,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496486209] [2022-11-23 14:31:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:41,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:41,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:31:41,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:31:41,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 14:31:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:42,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:31:42,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:31:42,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:31:42,405 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:31:42,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496486209] [2022-11-23 14:31:42,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496486209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:42,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:42,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:31:42,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879878220] [2022-11-23 14:31:42,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:42,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:31:42,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:31:42,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:31:42,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:42,408 INFO L87 Difference]: Start difference. First operand 2188 states and 3165 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) [2022-11-23 14:31:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:42,749 INFO L93 Difference]: Finished difference Result 2190 states and 3166 transitions. [2022-11-23 14:31:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:31:42,750 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 [2022-11-23 14:31:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:42,765 INFO L225 Difference]: With dead ends: 2190 [2022-11-23 14:31:42,765 INFO L226 Difference]: Without dead ends: 2187 [2022-11-23 14:31:42,767 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 [2022-11-23 14:31:42,771 INFO L413 NwaCegarLoop]: 3162 mSDtfsCounter, 3148 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3148 SdHoareTripleChecker+Valid, 3162 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 [2022-11-23 14:31:42,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3148 Valid, 3162 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:31:42,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2022-11-23 14:31:42,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2187. [2022-11-23 14:31:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 1514 states have (on average 1.3394980184940555) internal successors, (2028), 1555 states have internal predecessors, (2028), 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) [2022-11-23 14:31:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3163 transitions. [2022-11-23 14:31:42,956 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3163 transitions. Word has length 18 [2022-11-23 14:31:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:42,957 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3163 transitions. [2022-11-23 14:31:42,957 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) [2022-11-23 14:31:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3163 transitions. [2022-11-23 14:31:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 14:31:42,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:42,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:31:42,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:31:43,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:43,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:43,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:43,180 INFO L85 PathProgramCache]: Analyzing trace with hash -369301865, now seen corresponding path program 1 times [2022-11-23 14:31:43,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:31:43,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14015393] [2022-11-23 14:31:43,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:43,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:43,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:31:43,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:31:43,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 14:31:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:44,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:31:44,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:31:44,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:31:44,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:31:44,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14015393] [2022-11-23 14:31:44,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14015393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:44,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:44,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:31:44,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76909534] [2022-11-23 14:31:44,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:44,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:31:44,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:31:44,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:31:44,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:44,236 INFO L87 Difference]: Start difference. First operand 2187 states and 3163 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) [2022-11-23 14:31:44,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:44,674 INFO L93 Difference]: Finished difference Result 4958 states and 7106 transitions. [2022-11-23 14:31:44,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:31:44,675 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 [2022-11-23 14:31:44,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:44,700 INFO L225 Difference]: With dead ends: 4958 [2022-11-23 14:31:44,700 INFO L226 Difference]: Without dead ends: 2773 [2022-11-23 14:31:44,715 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 [2022-11-23 14:31:44,717 INFO L413 NwaCegarLoop]: 3554 mSDtfsCounter, 1198 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 6256 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 [2022-11-23 14:31:44,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 6256 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:31:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2022-11-23 14:31:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2770. [2022-11-23 14:31:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 1912 states have (on average 1.3216527196652719) internal successors, (2527), 1972 states have internal predecessors, (2527), 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) [2022-11-23 14:31:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3908 transitions. [2022-11-23 14:31:45,028 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3908 transitions. Word has length 19 [2022-11-23 14:31:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:45,028 INFO L495 AbstractCegarLoop]: Abstraction has 2770 states and 3908 transitions. [2022-11-23 14:31:45,028 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) [2022-11-23 14:31:45,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3908 transitions. [2022-11-23 14:31:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 14:31:45,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:45,041 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] [2022-11-23 14:31:45,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:31:45,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:45,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 393489938, now seen corresponding path program 1 times [2022-11-23 14:31:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:31:45,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583458522] [2022-11-23 14:31:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:45,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:45,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:31:45,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:31:45,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 14:31:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:46,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:31:46,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:31:46,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:31:46,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:31:46,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583458522] [2022-11-23 14:31:46,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583458522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:46,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:46,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:31:46,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803979578] [2022-11-23 14:31:46,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:46,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:31:46,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:31:46,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:31:46,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:46,299 INFO L87 Difference]: Start difference. First operand 2770 states and 3908 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) [2022-11-23 14:31:46,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:46,671 INFO L93 Difference]: Finished difference Result 5549 states and 7834 transitions. [2022-11-23 14:31:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:31:46,672 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 [2022-11-23 14:31:46,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:46,687 INFO L225 Difference]: With dead ends: 5549 [2022-11-23 14:31:46,688 INFO L226 Difference]: Without dead ends: 2790 [2022-11-23 14:31:46,701 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 [2022-11-23 14:31:46,702 INFO L413 NwaCegarLoop]: 3145 mSDtfsCounter, 43 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6236 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 [2022-11-23 14:31:46,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 6236 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:31:46,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2022-11-23 14:31:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2790. [2022-11-23 14:31:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 1928 states have (on average 1.3215767634854771) internal successors, (2548), 1988 states have internal predecessors, (2548), 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) [2022-11-23 14:31:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3937 transitions. [2022-11-23 14:31:46,950 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3937 transitions. Word has length 55 [2022-11-23 14:31:46,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:46,951 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 3937 transitions. [2022-11-23 14:31:46,951 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) [2022-11-23 14:31:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3937 transitions. [2022-11-23 14:31:46,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 14:31:46,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:46,953 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] [2022-11-23 14:31:46,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:31:47,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:47,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:47,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:47,180 INFO L85 PathProgramCache]: Analyzing trace with hash -742912640, now seen corresponding path program 1 times [2022-11-23 14:31:47,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:31:47,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429133563] [2022-11-23 14:31:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:47,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:47,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:31:47,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:31:47,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 14:31:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:47,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:31:47,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:31:48,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:31:48,037 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:31:48,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429133563] [2022-11-23 14:31:48,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429133563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:48,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:48,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:31:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527739033] [2022-11-23 14:31:48,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:48,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:31:48,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:31:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:31:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:48,039 INFO L87 Difference]: Start difference. First operand 2790 states and 3937 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2022-11-23 14:31:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:48,376 INFO L93 Difference]: Finished difference Result 5571 states and 7929 transitions. [2022-11-23 14:31:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:31:48,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 57 [2022-11-23 14:31:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:48,395 INFO L225 Difference]: With dead ends: 5571 [2022-11-23 14:31:48,395 INFO L226 Difference]: Without dead ends: 2792 [2022-11-23 14:31:48,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:48,415 INFO L413 NwaCegarLoop]: 3140 mSDtfsCounter, 0 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6273 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 [2022-11-23 14:31:48,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6273 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:31:48,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2022-11-23 14:31:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2790. [2022-11-23 14:31:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 1928 states have (on average 1.3184647302904564) internal successors, (2542), 1988 states have internal predecessors, (2542), 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) [2022-11-23 14:31:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3931 transitions. [2022-11-23 14:31:48,707 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3931 transitions. Word has length 57 [2022-11-23 14:31:48,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:48,709 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 3931 transitions. [2022-11-23 14:31:48,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2022-11-23 14:31:48,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3931 transitions. [2022-11-23 14:31:48,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 14:31:48,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:48,713 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] [2022-11-23 14:31:48,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:31:48,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:48,935 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:48,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash -64168537, now seen corresponding path program 1 times [2022-11-23 14:31:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:31:48,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105108345] [2022-11-23 14:31:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:48,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:48,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:31:48,938 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:31:48,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 14:31:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:49,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:31:49,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:31:50,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:31:50,065 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:31:50,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105108345] [2022-11-23 14:31:50,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105108345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:50,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:50,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:31:50,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911134081] [2022-11-23 14:31:50,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:50,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:31:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:31:50,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:31:50,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:50,067 INFO L87 Difference]: Start difference. First operand 2790 states and 3931 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2022-11-23 14:31:50,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:50,416 INFO L93 Difference]: Finished difference Result 4594 states and 6423 transitions. [2022-11-23 14:31:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:31:50,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 63 [2022-11-23 14:31:50,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:50,430 INFO L225 Difference]: With dead ends: 4594 [2022-11-23 14:31:50,430 INFO L226 Difference]: Without dead ends: 2316 [2022-11-23 14:31:50,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:50,442 INFO L413 NwaCegarLoop]: 3045 mSDtfsCounter, 2130 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 4044 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 [2022-11-23 14:31:50,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 4044 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:31:50,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-11-23 14:31:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2316. [2022-11-23 14:31:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 1607 states have (on average 1.3067828251400124) internal successors, (2100), 1652 states have internal predecessors, (2100), 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) [2022-11-23 14:31:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3189 transitions. [2022-11-23 14:31:50,639 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3189 transitions. Word has length 63 [2022-11-23 14:31:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:50,639 INFO L495 AbstractCegarLoop]: Abstraction has 2316 states and 3189 transitions. [2022-11-23 14:31:50,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2022-11-23 14:31:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3189 transitions. [2022-11-23 14:31:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 14:31:50,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:50,642 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] [2022-11-23 14:31:50,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:31:50,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:50,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1064965082, now seen corresponding path program 1 times [2022-11-23 14:31:50,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:31:50,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995281479] [2022-11-23 14:31:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:50,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:31:50,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:31:50,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:31:50,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 14:31:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:31:56,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:32:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:32:03,036 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 14:32:03,037 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:32:03,038 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:32:03,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:32:03,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:32:03,265 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:32:03,269 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:32:03,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:32:03 BoogieIcfgContainer [2022-11-23 14:32:03,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:32:03,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:32:03,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:32:03,350 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:32:03,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:37" (3/4) ... [2022-11-23 14:32:03,359 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:32:03,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:32:03,359 INFO L158 Benchmark]: Toolchain (without parser) took 89219.04ms. Allocated memory was 71.3MB in the beginning and 469.8MB in the end (delta: 398.5MB). Free memory was 43.7MB in the beginning and 89.1MB in the end (delta: -45.4MB). Peak memory consumption was 354.6MB. Max. memory is 16.1GB. [2022-11-23 14:32:03,360 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 71.3MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 47.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:32:03,360 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3965.38ms. Allocated memory was 71.3MB in the beginning and 144.7MB in the end (delta: 73.4MB). Free memory was 43.5MB in the beginning and 46.0MB in the end (delta: -2.5MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. [2022-11-23 14:32:03,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 339.76ms. Allocated memory was 144.7MB in the beginning and 226.5MB in the end (delta: 81.8MB). Free memory was 46.0MB in the beginning and 127.3MB in the end (delta: -81.3MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-11-23 14:32:03,361 INFO L158 Benchmark]: Boogie Preprocessor took 476.73ms. Allocated memory is still 226.5MB. Free memory was 127.3MB in the beginning and 126.7MB in the end (delta: 592.2kB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2022-11-23 14:32:03,362 INFO L158 Benchmark]: RCFGBuilder took 58396.26ms. Allocated memory was 226.5MB in the beginning and 469.8MB in the end (delta: 243.3MB). Free memory was 126.7MB in the beginning and 319.5MB in the end (delta: -192.8MB). Peak memory consumption was 285.8MB. Max. memory is 16.1GB. [2022-11-23 14:32:03,362 INFO L158 Benchmark]: TraceAbstraction took 26021.62ms. Allocated memory is still 469.8MB. Free memory was 319.5MB in the beginning and 89.1MB in the end (delta: 230.4MB). Peak memory consumption was 230.4MB. Max. memory is 16.1GB. [2022-11-23 14:32:03,362 INFO L158 Benchmark]: Witness Printer took 9.22ms. Allocated memory is still 469.8MB. Free memory was 89.1MB in the beginning and 89.1MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:32:03,364 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 71.3MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 47.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3965.38ms. Allocated memory was 71.3MB in the beginning and 144.7MB in the end (delta: 73.4MB). Free memory was 43.5MB in the beginning and 46.0MB in the end (delta: -2.5MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 339.76ms. Allocated memory was 144.7MB in the beginning and 226.5MB in the end (delta: 81.8MB). Free memory was 46.0MB in the beginning and 127.3MB in the end (delta: -81.3MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 476.73ms. Allocated memory is still 226.5MB. Free memory was 127.3MB in the beginning and 126.7MB in the end (delta: 592.2kB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. * RCFGBuilder took 58396.26ms. Allocated memory was 226.5MB in the beginning and 469.8MB in the end (delta: 243.3MB). Free memory was 126.7MB in the beginning and 319.5MB in the end (delta: -192.8MB). Peak memory consumption was 285.8MB. Max. memory is 16.1GB. * TraceAbstraction took 26021.62ms. Allocated memory is still 469.8MB. Free memory was 319.5MB in the beginning and 89.1MB in the end (delta: 230.4MB). Peak memory consumption was 230.4MB. Max. memory is 16.1GB. * Witness Printer took 9.22ms. Allocated memory is still 469.8MB. Free memory was 89.1MB in the beginning and 89.1MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 [#in~lock={299092953661440:36028797018947664}, \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] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [#in~lock={299092953661440:36028797018947664}, \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={299092953661440:36028797018947664}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [#in~lock={299092953661440:36028797018947664}, \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={299092953661440:36028797018947664}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [#in~ldv_func_arg1={299092953661440:36028797018947664}, \old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, ldv_func_arg1={299092953661440:36028797018947664}, 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 [#in~ldv_func_arg1={299092953661440:36028797018947664}, \old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, ldv_func_arg1={299092953661440:36028797018947664}, 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 [#in~dev={299092953661440:36028797018947648}, \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] [L6410] struct task_struct *tmp ; VAL [#in~dev={299092953661440:36028797018947648}, \old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={299092953661440:36028797018947648}, 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={0:1024}, __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__={0:1024}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [#in~dev={299092953661440:36028797018947648}, \old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={299092953661440:36028797018947648}, experimental_zcopytx=0, get_current()={0:1024}, 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] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [#in~n={299092953661440:36028797018947648}, \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={299092953661440:36028797018947648}, rx_sock={254:0}, 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 [#in~n={299092953661440:36028797018947648}, \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={299092953661440:36028797018947648}, rx_sock={254:0}, 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 [#in~n={299092953661440:36028797018947648}, #in~rx_sock={254:0}, #in~tx_sock={217:0}, \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] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [#in~n={299092953661440:36028797018947648}, #in~vq={299092953661440:36028797018965064}, \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] [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 [#in~lock={299092953661440:36028797018965072}, \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] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [#in~lock={299092953661440:36028797018965072}, \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={299092953661440:36028797018965072}, 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, 2200 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.8s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12851 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12836 mSDsluCounter, 32313 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9925 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 22388 mSDtfsCounter, 37 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2790occurred in iteration=5, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 308 NumberOfCodeBlocks, 308 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 238 ConstructedInterpolants, 0 QuantifiedInterpolants, 429 SizeOfPredicates, 1 NumberOfNonLiveVariables, 4343 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 6/6 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 [2022-11-23 14:32:03,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f2b361-078a-4c3f-9137-09818f043c36/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample