./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.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_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:35:26,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:35:26,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:35:26,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:35:26,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:35:26,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:35:26,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:35:26,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:35:26,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:35:26,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:35:26,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:35:26,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:35:26,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:35:26,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:35:26,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:35:26,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:35:26,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:35:26,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:35:26,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:35:26,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:35:26,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:35:26,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:35:26,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:35:26,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:35:26,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:35:26,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:35:26,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:35:26,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:35:26,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:35:26,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:35:26,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:35:26,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:35:26,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:35:26,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:35:26,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:35:26,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:35:26,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:35:26,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:35:26,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:35:26,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:35:26,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:35:26,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 05:35:26,705 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:35:26,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:35:26,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:35:26,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:35:26,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:35:26,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:35:26,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:35:26,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:35:26,718 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:35:26,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:35:26,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:35:26,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:35:26,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:35:26,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:35:26,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:35:26,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:35:26,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:35:26,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:35:26,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:35:26,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:35:26,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:35:26,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:35:26,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:35:26,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:35:26,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:35:26,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:35:26,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:35:26,727 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:35:26,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:35:26,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:35:26,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:35:26,730 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_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-11-20 05:35:27,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:35:27,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:35:27,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:35:27,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:35:27,085 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:35:27,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-20 05:35:27,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/data/c96eefdee/d5cf62b1afa94378afc29b7034c6243a/FLAG728696af5 [2021-11-20 05:35:28,448 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:35:28,449 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-20 05:35:28,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/data/c96eefdee/d5cf62b1afa94378afc29b7034c6243a/FLAG728696af5 [2021-11-20 05:35:28,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/data/c96eefdee/d5cf62b1afa94378afc29b7034c6243a [2021-11-20 05:35:28,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:35:28,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:35:28,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:35:28,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:35:28,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:35:28,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:35:28" (1/1) ... [2021-11-20 05:35:28,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9df12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:28, skipping insertion in model container [2021-11-20 05:35:28,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:35:28" (1/1) ... [2021-11-20 05:35:28,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:35:28,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:35:32,324 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-20 05:35:32,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:35:32,478 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:35:33,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-20 05:35:33,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:35:33,254 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:35:33,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33 WrapperNode [2021-11-20 05:35:33,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:35:33,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:35:33,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:35:33,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:35:33,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (1/1) ... [2021-11-20 05:35:33,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (1/1) ... [2021-11-20 05:35:33,761 INFO L137 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6648 [2021-11-20 05:35:33,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:35:33,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:35:33,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:35:33,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:35:33,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (1/1) ... [2021-11-20 05:35:33,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (1/1) ... [2021-11-20 05:35:33,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (1/1) ... [2021-11-20 05:35:33,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (1/1) ... [2021-11-20 05:35:34,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (1/1) ... [2021-11-20 05:35:34,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (1/1) ... [2021-11-20 05:35:34,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (1/1) ... [2021-11-20 05:35:34,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:35:34,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:35:34,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:35:34,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:35:34,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (1/1) ... [2021-11-20 05:35:34,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:35:34,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:35:34,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:35:34,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:35:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-11-20 05:35:34,337 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-11-20 05:35:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-11-20 05:35:34,338 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-11-20 05:35:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-11-20 05:35:34,338 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-11-20 05:35:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-20 05:35:34,339 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-20 05:35:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-20 05:35:34,339 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-20 05:35:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-20 05:35:34,340 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-20 05:35:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 05:35:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-20 05:35:34,340 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-20 05:35:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 05:35:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-20 05:35:34,341 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-20 05:35:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-11-20 05:35:34,342 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-11-20 05:35:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-20 05:35:34,342 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-20 05:35:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-11-20 05:35:34,343 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-11-20 05:35:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-20 05:35:34,343 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-20 05:35:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-20 05:35:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-20 05:35:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 05:35:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 05:35:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-20 05:35:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-20 05:35:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 05:35:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 05:35:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-20 05:35:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-20 05:35:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 05:35:34,346 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 05:35:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 05:35:34,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 05:35:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-20 05:35:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 05:35:34,347 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 05:35:34,348 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-11-20 05:35:34,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-11-20 05:35:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-11-20 05:35:34,349 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-11-20 05:35:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-20 05:35:34,349 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-20 05:35:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-11-20 05:35:34,350 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-11-20 05:35:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-11-20 05:35:34,350 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-11-20 05:35:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2021-11-20 05:35:34,351 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2021-11-20 05:35:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-20 05:35:34,352 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-20 05:35:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 05:35:34,353 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 05:35:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-20 05:35:34,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-20 05:35:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-20 05:35:34,354 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-20 05:35:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-11-20 05:35:34,355 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-11-20 05:35:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:35:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 05:35:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 05:35:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-20 05:35:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-20 05:35:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-11-20 05:35:34,358 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-11-20 05:35:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:35:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 05:35:34,359 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 05:35:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-20 05:35:34,360 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-20 05:35:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-11-20 05:35:34,360 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-11-20 05:35:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:35:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:35:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-20 05:35:34,361 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-20 05:35:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-11-20 05:35:34,361 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-11-20 05:35:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 05:35:34,362 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 05:35:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-11-20 05:35:34,362 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-11-20 05:35:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-11-20 05:35:34,363 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-11-20 05:35:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-20 05:35:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-20 05:35:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-20 05:35:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-20 05:35:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 05:35:34,366 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 05:35:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-20 05:35:34,366 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-20 05:35:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 05:35:34,368 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 05:35:34,368 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-20 05:35:34,368 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-20 05:35:34,368 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-11-20 05:35:34,368 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-11-20 05:35:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-11-20 05:35:34,369 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-11-20 05:35:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-20 05:35:34,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-20 05:35:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-20 05:35:34,370 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-20 05:35:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 05:35:34,371 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-20 05:35:34,371 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-20 05:35:34,371 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-20 05:35:34,371 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-20 05:35:34,372 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 05:35:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 05:35:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 05:35:34,376 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-20 05:35:34,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-20 05:35:34,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:35:34,377 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-20 05:35:34,378 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-20 05:35:34,380 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-20 05:35:34,380 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-20 05:35:34,381 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-11-20 05:35:34,381 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-11-20 05:35:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-20 05:35:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-20 05:35:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 05:35:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 05:35:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-20 05:35:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-11-20 05:35:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-11-20 05:35:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:35:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-20 05:35:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-20 05:35:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-20 05:35:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-20 05:35:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-20 05:35:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-20 05:35:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-20 05:35:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-20 05:35:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-20 05:35:34,390 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-20 05:35:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-11-20 05:35:34,390 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-11-20 05:35:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-11-20 05:35:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-11-20 05:35:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-20 05:35:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-20 05:35:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-20 05:35:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-20 05:35:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-20 05:35:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-20 05:35:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 05:35:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 05:35:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-11-20 05:35:34,393 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-11-20 05:35:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-20 05:35:34,393 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-20 05:35:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:35:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-20 05:35:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-20 05:35:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-20 05:35:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-20 05:35:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-11-20 05:35:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-11-20 05:35:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:35:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-20 05:35:34,395 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-20 05:35:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-11-20 05:35:34,395 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-11-20 05:35:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-20 05:35:34,396 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-20 05:35:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:35:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-20 05:35:34,397 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-20 05:35:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 05:35:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-20 05:35:34,397 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-20 05:35:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 05:35:34,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 05:35:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-20 05:35:34,398 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-20 05:35:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-20 05:35:34,398 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-20 05:35:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-20 05:35:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-20 05:35:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-20 05:35:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-20 05:35:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 05:35:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 05:35:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2021-11-20 05:35:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2021-11-20 05:35:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 05:35:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 05:35:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-20 05:35:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-20 05:35:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-20 05:35:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-20 05:35:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 05:35:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 05:35:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-20 05:35:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-20 05:35:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-11-20 05:35:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-11-20 05:35:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-20 05:35:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-20 05:35:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-20 05:35:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-20 05:35:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-20 05:35:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-20 05:35:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 05:35:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 05:35:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-20 05:35:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-20 05:35:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-20 05:35:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-20 05:35:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 05:35:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 05:35:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-20 05:35:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-20 05:35:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:35:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-11-20 05:35:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-11-20 05:35:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-11-20 05:35:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-11-20 05:35:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-20 05:35:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-20 05:35:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:35:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:35:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 05:35:34,410 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 05:35:35,511 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:35:35,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:35:40,959 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-11-20 05:35:40,960 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: assume -9223372036854775808 <= __copy_to_user_#t~ret139#1 && __copy_to_user_#t~ret139#1 <= 9223372036854775807;__copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2021-11-20 05:35:40,960 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-11-20 05:35:40,960 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: assume -9223372036854775808 <= __copy_to_user_#t~ret138#1 && __copy_to_user_#t~ret138#1 <= 9223372036854775807;__copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2021-11-20 05:35:40,960 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-11-20 05:35:40,961 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-11-20 05:35:40,961 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:35:40,961 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:35:40,961 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-11-20 05:35:40,961 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-11-20 05:35:40,961 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-11-20 05:35:40,961 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:35:40,962 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:35:40,962 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-11-20 05:35:40,962 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16 == __copy_to_user_~size#1; [2021-11-20 05:35:40,962 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:35:40,962 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10 == __copy_to_user_~size#1; [2021-11-20 05:35:40,962 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2021-11-20 05:35:40,962 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:35:40,963 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8 == __copy_to_user_~size#1; [2021-11-20 05:35:40,963 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := (if __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 else __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-20 05:35:40,963 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:35:40,963 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4 == __copy_to_user_~size#1; [2021-11-20 05:35:40,963 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:35:40,963 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2 == __copy_to_user_~size#1; [2021-11-20 05:35:43,859 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2021-11-20 05:35:43,860 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: assume -9223372036854775808 <= __copy_from_user_#t~ret133#1 && __copy_from_user_#t~ret133#1 <= 9223372036854775807;__copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2021-11-20 05:35:43,860 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:35:43,860 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:35:43,860 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-11-20 05:35:43,860 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-11-20 05:35:43,861 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-11-20 05:35:43,861 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2021-11-20 05:35:43,861 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: assume -9223372036854775808 <= __copy_from_user_#t~ret134#1 && __copy_from_user_#t~ret134#1 <= 9223372036854775807;__copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2021-11-20 05:35:43,861 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:35:43,861 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:35:43,861 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:35:43,862 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4 == __copy_from_user_~size#1; [2021-11-20 05:35:43,862 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:35:43,862 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8 == __copy_from_user_~size#1; [2021-11-20 05:35:43,862 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2 == __copy_from_user_~size#1; [2021-11-20 05:35:43,862 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:35:43,862 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-11-20 05:35:43,862 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-11-20 05:35:43,863 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-20 05:35:43,863 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2021-11-20 05:35:43,863 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:35:43,863 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10 == __copy_from_user_~size#1; [2021-11-20 05:35:43,863 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-11-20 05:35:43,863 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16 == __copy_from_user_~size#1; [2021-11-20 05:35:45,326 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:35:45,366 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:35:45,366 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:35:45,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:35:45 BoogieIcfgContainer [2021-11-20 05:35:45,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:35:45,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:35:45,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:35:45,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:35:45,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:35:28" (1/3) ... [2021-11-20 05:35:45,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9cdc9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:35:45, skipping insertion in model container [2021-11-20 05:35:45,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:35:33" (2/3) ... [2021-11-20 05:35:45,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9cdc9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:35:45, skipping insertion in model container [2021-11-20 05:35:45,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:35:45" (3/3) ... [2021-11-20 05:35:45,385 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-20 05:35:45,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:35:45,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:35:45,478 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:35:45,487 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:35:45,487 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:35:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 2239 states, 1550 states have (on average 1.344516129032258) internal successors, (2084), 1596 states have internal predecessors, (2084), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) [2021-11-20 05:35:45,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:35:45,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:35:45,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:35:45,575 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:35:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:35:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash -662016059, now seen corresponding path program 1 times [2021-11-20 05:35:45,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:35:45,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880971918] [2021-11-20 05:35:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:35:45,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:35:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:35:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:35:46,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:35:46,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880971918] [2021-11-20 05:35:46,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880971918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:35:46,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:35:46,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:35:46,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731160380] [2021-11-20 05:35:46,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:35:46,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:35:46,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:35:46,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:35:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:35:46,300 INFO L87 Difference]: Start difference. First operand has 2239 states, 1550 states have (on average 1.344516129032258) internal successors, (2084), 1596 states have internal predecessors, (2084), 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 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:35:46,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:35:46,791 INFO L93 Difference]: Finished difference Result 4464 states and 6561 transitions. [2021-11-20 05:35:46,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:35:46,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-20 05:35:46,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:35:46,838 INFO L225 Difference]: With dead ends: 4464 [2021-11-20 05:35:46,838 INFO L226 Difference]: Without dead ends: 2228 [2021-11-20 05:35:46,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:35:46,866 INFO L933 BasicCegarLoop]: 3230 mSDtfsCounter, 3220 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3220 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:35:46,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3220 Valid, 3230 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:35:46,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-11-20 05:35:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2228. [2021-11-20 05:35:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1542 states have (on average 1.3411154345006484) internal successors, (2068), 1585 states have internal predecessors, (2068), 578 states have call successors, (578), 108 states have call predecessors, (578), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-20 05:35:47,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3219 transitions. [2021-11-20 05:35:47,192 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3219 transitions. Word has length 16 [2021-11-20 05:35:47,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:35:47,194 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3219 transitions. [2021-11-20 05:35:47,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:35:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3219 transitions. [2021-11-20 05:35:47,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:35:47,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:35:47,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:35:47,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:35:47,198 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:35:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:35:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash 951309113, now seen corresponding path program 1 times [2021-11-20 05:35:47,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:35:47,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66917492] [2021-11-20 05:35:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:35:47,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:35:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:35:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:35:47,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:35:47,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66917492] [2021-11-20 05:35:47,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66917492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:35:47,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:35:47,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:35:47,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651238088] [2021-11-20 05:35:47,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:35:47,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:35:47,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:35:47,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:35:47,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:35:47,393 INFO L87 Difference]: Start difference. First operand 2228 states and 3219 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:35:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:35:47,559 INFO L93 Difference]: Finished difference Result 2230 states and 3220 transitions. [2021-11-20 05:35:47,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:35:47,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-20 05:35:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:35:47,583 INFO L225 Difference]: With dead ends: 2230 [2021-11-20 05:35:47,583 INFO L226 Difference]: Without dead ends: 2227 [2021-11-20 05:35:47,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:35:47,592 INFO L933 BasicCegarLoop]: 3216 mSDtfsCounter, 3205 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:35:47,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3205 Valid, 3216 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:35:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-11-20 05:35:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2227. [2021-11-20 05:35:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1542 states have (on average 1.3404669260700388) internal successors, (2067), 1584 states have internal predecessors, (2067), 577 states have call successors, (577), 108 states have call predecessors, (577), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-20 05:35:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3217 transitions. [2021-11-20 05:35:47,828 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3217 transitions. Word has length 17 [2021-11-20 05:35:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:35:47,829 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3217 transitions. [2021-11-20 05:35:47,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:35:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3217 transitions. [2021-11-20 05:35:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:35:47,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:35:47,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:35:47,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:35:47,833 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:35:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:35:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash -575213240, now seen corresponding path program 1 times [2021-11-20 05:35:47,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:35:47,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869377104] [2021-11-20 05:35:47,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:35:47,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:35:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:47,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:35:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:35:47,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:35:47,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869377104] [2021-11-20 05:35:47,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869377104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:35:47,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:35:47,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:35:47,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571908837] [2021-11-20 05:35:47,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:35:47,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:35:47,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:35:47,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:35:47,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:35:47,988 INFO L87 Difference]: Start difference. First operand 2227 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:35:48,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:35:48,143 INFO L93 Difference]: Finished difference Result 2229 states and 3218 transitions. [2021-11-20 05:35:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:35:48,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-20 05:35:48,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:35:48,164 INFO L225 Difference]: With dead ends: 2229 [2021-11-20 05:35:48,164 INFO L226 Difference]: Without dead ends: 2226 [2021-11-20 05:35:48,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:35:48,175 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 3202 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:35:48,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3202 Valid, 3214 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:35:48,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-11-20 05:35:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2226. [2021-11-20 05:35:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 1542 states have (on average 1.3398184176394292) internal successors, (2066), 1583 states have internal predecessors, (2066), 576 states have call successors, (576), 108 states have call predecessors, (576), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-20 05:35:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3215 transitions. [2021-11-20 05:35:48,356 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3215 transitions. Word has length 18 [2021-11-20 05:35:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:35:48,357 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 3215 transitions. [2021-11-20 05:35:48,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:35:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3215 transitions. [2021-11-20 05:35:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:35:48,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:35:48,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:35:48,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:35:48,359 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:35:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:35:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash -652761060, now seen corresponding path program 1 times [2021-11-20 05:35:48,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:35:48,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249584307] [2021-11-20 05:35:48,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:35:48,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:35:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:48,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:35:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:35:48,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:35:48,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249584307] [2021-11-20 05:35:48,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249584307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:35:48,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:35:48,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:35:48,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983955775] [2021-11-20 05:35:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:35:48,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:35:48,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:35:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:35:48,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:35:48,492 INFO L87 Difference]: Start difference. First operand 2226 states and 3215 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:35:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:35:48,870 INFO L93 Difference]: Finished difference Result 5137 states and 7376 transitions. [2021-11-20 05:35:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:35:48,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-20 05:35:48,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:35:48,907 INFO L225 Difference]: With dead ends: 5137 [2021-11-20 05:35:48,907 INFO L226 Difference]: Without dead ends: 2913 [2021-11-20 05:35:48,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:35:48,932 INFO L933 BasicCegarLoop]: 3667 mSDtfsCounter, 1302 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:35:48,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 6466 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:35:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2021-11-20 05:35:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2910. [2021-11-20 05:35:49,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2009 states have (on average 1.321553011448482) internal successors, (2655), 2071 states have internal predecessors, (2655), 721 states have call successors, (721), 183 states have call predecessors, (721), 179 states have return successors, (731), 698 states have call predecessors, (731), 708 states have call successors, (731) [2021-11-20 05:35:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4107 transitions. [2021-11-20 05:35:49,229 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4107 transitions. Word has length 19 [2021-11-20 05:35:49,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:35:49,230 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 4107 transitions. [2021-11-20 05:35:49,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:35:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4107 transitions. [2021-11-20 05:35:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-20 05:35:49,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:35:49,248 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:35:49,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:35:49,249 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:35:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:35:49,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1639297723, now seen corresponding path program 1 times [2021-11-20 05:35:49,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:35:49,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423312148] [2021-11-20 05:35:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:35:49,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:35:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:49,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:35:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:49,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:35:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:49,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-20 05:35:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:49,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 05:35:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:49,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 05:35:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:49,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 05:35:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:35:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:35:49,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:35:49,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423312148] [2021-11-20 05:35:49,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423312148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:35:49,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:35:49,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:35:49,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745401757] [2021-11-20 05:35:49,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:35:49,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:35:49,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:35:49,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:35:49,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:35:49,572 INFO L87 Difference]: Start difference. First operand 2910 states and 4107 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:35:52,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:35:57,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:35:58,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:36:00,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:36:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:36:08,105 INFO L93 Difference]: Finished difference Result 6348 states and 9025 transitions. [2021-11-20 05:36:08,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:36:08,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-20 05:36:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:36:08,145 INFO L225 Difference]: With dead ends: 6348 [2021-11-20 05:36:08,146 INFO L226 Difference]: Without dead ends: 3449 [2021-11-20 05:36:08,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:36:08,167 INFO L933 BasicCegarLoop]: 2761 mSDtfsCounter, 2218 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 3883 mSolverCounterSat, 1610 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 6098 SdHoareTripleChecker+Invalid, 5495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 3883 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:36:08,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2516 Valid, 6098 Invalid, 5495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1610 Valid, 3883 Invalid, 2 Unknown, 0 Unchecked, 17.9s Time] [2021-11-20 05:36:08,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2021-11-20 05:36:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 2965. [2021-11-20 05:36:08,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2048 states have (on average 1.31884765625) internal successors, (2701), 2112 states have internal predecessors, (2701), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2021-11-20 05:36:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4177 transitions. [2021-11-20 05:36:08,501 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4177 transitions. Word has length 56 [2021-11-20 05:36:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:36:08,502 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4177 transitions. [2021-11-20 05:36:08,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:36:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4177 transitions. [2021-11-20 05:36:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 05:36:08,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:36:08,506 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:36:08,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:36:08,506 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:36:08,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:36:08,507 INFO L85 PathProgramCache]: Analyzing trace with hash -963749432, now seen corresponding path program 1 times [2021-11-20 05:36:08,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:36:08,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102441464] [2021-11-20 05:36:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:36:08,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:36:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:36:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 05:36:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 05:36:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:08,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:36:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 05:36:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:08,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:36:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:36:08,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:36:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102441464] [2021-11-20 05:36:08,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102441464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:36:08,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:36:08,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:36:08,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633946774] [2021-11-20 05:36:08,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:36:08,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:36:08,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:36:08,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:36:08,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:36:08,763 INFO L87 Difference]: Start difference. First operand 2965 states and 4177 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 05:36:11,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:36:15,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:36:15,989 INFO L93 Difference]: Finished difference Result 6019 states and 8585 transitions. [2021-11-20 05:36:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:36:15,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (9), 3 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 62 [2021-11-20 05:36:15,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:36:16,021 INFO L225 Difference]: With dead ends: 6019 [2021-11-20 05:36:16,022 INFO L226 Difference]: Without dead ends: 3065 [2021-11-20 05:36:16,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:36:16,051 INFO L933 BasicCegarLoop]: 2948 mSDtfsCounter, 1192 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 627 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5916 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:36:16,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 5916 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 1854 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-20 05:36:16,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2021-11-20 05:36:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 2965. [2021-11-20 05:36:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2048 states have (on average 1.31591796875) internal successors, (2695), 2112 states have internal predecessors, (2695), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2021-11-20 05:36:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4171 transitions. [2021-11-20 05:36:16,352 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4171 transitions. Word has length 62 [2021-11-20 05:36:16,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:36:16,353 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4171 transitions. [2021-11-20 05:36:16,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 05:36:16,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4171 transitions. [2021-11-20 05:36:16,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 05:36:16,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:36:16,357 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:36:16,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:36:16,358 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:36:16,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:36:16,359 INFO L85 PathProgramCache]: Analyzing trace with hash -566496063, now seen corresponding path program 1 times [2021-11-20 05:36:16,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:36:16,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589009154] [2021-11-20 05:36:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:36:16,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:36:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:16,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:36:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:36:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:16,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-20 05:36:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:16,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 05:36:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:16,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 05:36:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:36:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:36:16,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:36:16,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589009154] [2021-11-20 05:36:16,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589009154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:36:16,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:36:16,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:36:16,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181072489] [2021-11-20 05:36:16,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:36:16,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:36:16,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:36:16,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:36:16,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:36:16,585 INFO L87 Difference]: Start difference. First operand 2965 states and 4171 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:36:19,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:36:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:36:22,692 INFO L93 Difference]: Finished difference Result 5045 states and 7042 transitions. [2021-11-20 05:36:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:36:22,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 4 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 62 [2021-11-20 05:36:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:36:22,717 INFO L225 Difference]: With dead ends: 5045 [2021-11-20 05:36:22,717 INFO L226 Difference]: Without dead ends: 2513 [2021-11-20 05:36:22,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:36:22,736 INFO L933 BasicCegarLoop]: 2667 mSDtfsCounter, 2851 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 1200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:36:22,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 3618 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 1483 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 05:36:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-11-20 05:36:22,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2394. [2021-11-20 05:36:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2394 states, 1659 states have (on average 1.3044002411091018) internal successors, (2164), 1705 states have internal predecessors, (2164), 569 states have call successors, (569), 170 states have call predecessors, (569), 165 states have return successors, (554), 547 states have call predecessors, (554), 554 states have call successors, (554) [2021-11-20 05:36:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3287 transitions. [2021-11-20 05:36:22,992 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3287 transitions. Word has length 62 [2021-11-20 05:36:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:36:22,992 INFO L470 AbstractCegarLoop]: Abstraction has 2394 states and 3287 transitions. [2021-11-20 05:36:22,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:36:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3287 transitions. [2021-11-20 05:36:22,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 05:36:22,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:36:22,998 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:36:22,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:36:22,998 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:36:22,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:36:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2018660585, now seen corresponding path program 1 times [2021-11-20 05:36:22,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:36:22,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953969096] [2021-11-20 05:36:23,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:36:23,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:36:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:36:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:23,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:36:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:23,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-20 05:36:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:23,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 05:36:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 05:36:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:36:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:36:23,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:36:23,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953969096] [2021-11-20 05:36:23,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953969096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:36:23,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:36:23,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:36:23,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399597275] [2021-11-20 05:36:23,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:36:23,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:36:23,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:36:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:36:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:36:23,217 INFO L87 Difference]: Start difference. First operand 2394 states and 3287 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 05:36:25,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:36:28,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:36:30,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:36:32,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:36:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:36:39,996 INFO L93 Difference]: Finished difference Result 2543 states and 3503 transitions. [2021-11-20 05:36:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:36:39,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2021-11-20 05:36:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:36:40,021 INFO L225 Difference]: With dead ends: 2543 [2021-11-20 05:36:40,021 INFO L226 Difference]: Without dead ends: 2533 [2021-11-20 05:36:40,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:36:40,024 INFO L933 BasicCegarLoop]: 2368 mSDtfsCounter, 1138 mSDsluCounter, 6492 mSDsCounter, 0 mSdLazyCounter, 5173 mSolverCounterSat, 502 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 8860 SdHoareTripleChecker+Invalid, 5679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 5173 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:36:40,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 8860 Invalid, 5679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 5173 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2021-11-20 05:36:40,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-11-20 05:36:40,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2399. [2021-11-20 05:36:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1663 states have (on average 1.3036680697534575) internal successors, (2168), 1709 states have internal predecessors, (2168), 569 states have call successors, (569), 170 states have call predecessors, (569), 166 states have return successors, (557), 548 states have call predecessors, (557), 554 states have call successors, (557) [2021-11-20 05:36:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3294 transitions. [2021-11-20 05:36:40,221 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3294 transitions. Word has length 65 [2021-11-20 05:36:40,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:36:40,222 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3294 transitions. [2021-11-20 05:36:40,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 05:36:40,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3294 transitions. [2021-11-20 05:36:40,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 05:36:40,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:36:40,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:36:40,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:36:40,225 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:36:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:36:40,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1285989531, now seen corresponding path program 1 times [2021-11-20 05:36:40,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:36:40,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406368175] [2021-11-20 05:36:40,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:36:40,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:36:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:36:40,381 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:36:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:36:40,558 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:36:40,559 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:36:40,559 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 05:36:40,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:36:40,564 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:36:40,567 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:36:40,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:36:40 BoogieIcfgContainer [2021-11-20 05:36:40,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:36:40,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:36:40,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:36:40,652 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:36:40,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:35:45" (3/4) ... [2021-11-20 05:36:40,655 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:36:40,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:36:40,656 INFO L158 Benchmark]: Toolchain (without parser) took 71996.45ms. Allocated memory was 123.7MB in the beginning and 708.8MB in the end (delta: 585.1MB). Free memory was 74.4MB in the beginning and 427.7MB in the end (delta: -353.3MB). Peak memory consumption was 231.4MB. Max. memory is 16.1GB. [2021-11-20 05:36:40,656 INFO L158 Benchmark]: CDTParser took 21.14ms. Allocated memory is still 83.9MB. Free memory was 38.4MB in the beginning and 55.3MB in the end (delta: -16.9MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2021-11-20 05:36:40,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4594.56ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 74.4MB in the beginning and 88.5MB in the end (delta: -14.1MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2021-11-20 05:36:40,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 502.97ms. Allocated memory is still 182.5MB. Free memory was 88.5MB in the beginning and 95.7MB in the end (delta: -7.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-20 05:36:40,657 INFO L158 Benchmark]: Boogie Preprocessor took 469.85ms. Allocated memory was 182.5MB in the beginning and 293.6MB in the end (delta: 111.1MB). Free memory was 95.7MB in the beginning and 201.9MB in the end (delta: -106.1MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2021-11-20 05:36:40,658 INFO L158 Benchmark]: RCFGBuilder took 11139.18ms. Allocated memory was 293.6MB in the beginning and 446.7MB in the end (delta: 153.1MB). Free memory was 201.9MB in the beginning and 183.1MB in the end (delta: 18.8MB). Peak memory consumption was 171.8MB. Max. memory is 16.1GB. [2021-11-20 05:36:40,658 INFO L158 Benchmark]: TraceAbstraction took 55275.57ms. Allocated memory was 446.7MB in the beginning and 708.8MB in the end (delta: 262.1MB). Free memory was 183.1MB in the beginning and 427.7MB in the end (delta: -244.6MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2021-11-20 05:36:40,658 INFO L158 Benchmark]: Witness Printer took 3.93ms. Allocated memory is still 708.8MB. Free memory is still 427.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:36:40,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 21.14ms. Allocated memory is still 83.9MB. Free memory was 38.4MB in the beginning and 55.3MB in the end (delta: -16.9MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4594.56ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 74.4MB in the beginning and 88.5MB in the end (delta: -14.1MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 502.97ms. Allocated memory is still 182.5MB. Free memory was 88.5MB in the beginning and 95.7MB in the end (delta: -7.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 469.85ms. Allocated memory was 182.5MB in the beginning and 293.6MB in the end (delta: 111.1MB). Free memory was 95.7MB in the beginning and 201.9MB in the end (delta: -106.1MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * RCFGBuilder took 11139.18ms. Allocated memory was 293.6MB in the beginning and 446.7MB in the end (delta: 153.1MB). Free memory was 201.9MB in the beginning and 183.1MB in the end (delta: 18.8MB). Peak memory consumption was 171.8MB. Max. memory is 16.1GB. * TraceAbstraction took 55275.57ms. Allocated memory was 446.7MB in the beginning and 708.8MB in the end (delta: 262.1MB). Free memory was 183.1MB in the beginning and 427.7MB in the end (delta: -244.6MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Witness Printer took 3.93ms. Allocated memory is still 708.8MB. Free memory is still 427.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 10595. 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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=-2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: [L10673] case 3: VAL [__this_module={8589934596:8589934597}, 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=-2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={8589934596:8589934597}, 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=-2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10675] CALL vhost_net_compat_ioctl(var_group2, var_vhost_net_compat_ioctl_28_p1, var_vhost_net_compat_ioctl_28_p2) [L10582] void *tmp ; [L10583] long tmp___0 ; [L10585] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L9300] return ((void *)((unsigned long )uptr)); VAL [\old(uptr)=4294967295, \result={0:4294967295}, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, uptr=4294967295, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10585] RET, EXPR compat_ptr((compat_uptr_t )arg) [L10585] tmp = compat_ptr((compat_uptr_t )arg) [L10586] CALL vhost_net_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, 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={8589934595:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, 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={8589934595:-17400}, lock={8589934595:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, 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={8589934595:-17400}, lock={8589934595:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, ldv_func_arg1={8589934595:-17400}, ldv_func_arg1={8589934595:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, ldv_func_arg1={8589934595:-17400}, ldv_func_arg1={8589934595:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934594:-4}, __this_module={8589934596:8589934597}, 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__={8589934594:-4}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-17416}, experimental_zcopytx=0, get_current()={8589934594:-4}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-17416}, dev->mm={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, tmp={8589934594:-4}, tmp->mm={0:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L VAL [(unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L=0, \old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-17416}, dev->mm={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, tmp={8589934594:-4}, tmp->mm={0:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, 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={8589934595:-17416}, n={8589934595:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, 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={8589934595:-17416}, n={8589934595:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, 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={8589934595:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, 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={8589934595:-17416}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={8589934595:0}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, 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={8589934595:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, 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={8589934595:8}, lock={8589934595:8}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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, 2239 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.1s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 50.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 19392 SdHoareTripleChecker+Valid, 47.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18328 mSDsluCounter, 40618 SdHoareTripleChecker+Invalid, 43.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16547 mSDsCounter, 3943 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12406 IncrementalHoareTripleChecker+Invalid, 16357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3943 mSolverCounterUnsat, 24071 mSDtfsCounter, 12406 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2965occurred in iteration=5, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 840 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 05:36:40,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.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_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:36:43,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:36:43,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:36:43,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:36:43,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:36:43,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:36:43,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:36:43,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:36:43,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:36:43,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:36:43,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:36:43,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:36:43,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:36:43,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:36:43,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:36:43,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:36:43,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:36:43,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:36:43,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:36:43,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:36:43,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:36:43,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:36:43,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:36:43,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:36:43,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:36:43,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:36:43,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:36:43,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:36:43,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:36:43,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:36:43,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:36:43,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:36:43,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:36:43,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:36:43,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:36:43,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:36:43,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:36:43,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:36:43,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:36:43,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:36:43,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:36:43,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-20 05:36:43,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:36:43,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:36:43,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:36:43,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:36:43,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:36:43,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:36:43,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:36:43,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:36:43,508 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:36:43,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:36:43,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:36:43,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:36:43,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:36:43,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:36:43,509 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:36:43,510 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:36:43,510 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:36:43,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:36:43,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:36:43,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:36:43,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:36:43,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:36:43,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:36:43,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:36:43,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:36:43,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:36:43,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:36:43,512 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:36:43,513 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:36:43,513 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:36:43,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:36:43,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:36:43,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:36:43,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:36:43,514 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_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-11-20 05:36:43,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:36:43,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:36:43,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:36:43,941 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:36:43,942 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:36:43,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-20 05:36:44,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/data/2c8bf5b65/e2485eb0ff9c4b81857f00d8d626f117/FLAG00fd5c3b7 [2021-11-20 05:36:45,109 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:36:45,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-20 05:36:45,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/data/2c8bf5b65/e2485eb0ff9c4b81857f00d8d626f117/FLAG00fd5c3b7 [2021-11-20 05:36:45,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/data/2c8bf5b65/e2485eb0ff9c4b81857f00d8d626f117 [2021-11-20 05:36:45,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:36:45,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:36:45,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:36:45,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:36:45,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:36:45,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:36:45" (1/1) ... [2021-11-20 05:36:45,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6033af5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:45, skipping insertion in model container [2021-11-20 05:36:45,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:36:45" (1/1) ... [2021-11-20 05:36:45,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:36:45,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:36:48,761 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-20 05:36:48,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:36:48,936 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 05:36:49,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:36:49,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-20 05:36:49,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:36:49,602 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:36:50,198 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-20 05:36:50,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:36:50,367 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:36:50,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50 WrapperNode [2021-11-20 05:36:50,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:36:50,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:36:50,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:36:50,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:36:50,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (1/1) ... [2021-11-20 05:36:50,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (1/1) ... [2021-11-20 05:36:50,790 INFO L137 Inliner]: procedures = 350, calls = 2627, calls flagged for inlining = 143, calls inlined = 135, statements flattened = 6447 [2021-11-20 05:36:50,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:36:50,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:36:50,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:36:50,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:36:50,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (1/1) ... [2021-11-20 05:36:50,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (1/1) ... [2021-11-20 05:36:50,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (1/1) ... [2021-11-20 05:36:50,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (1/1) ... [2021-11-20 05:36:51,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (1/1) ... [2021-11-20 05:36:51,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (1/1) ... [2021-11-20 05:36:51,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (1/1) ... [2021-11-20 05:36:51,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:36:51,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:36:51,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:36:51,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:36:51,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (1/1) ... [2021-11-20 05:36:51,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:36:51,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:36:51,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:36:51,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:36:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-11-20 05:36:51,486 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-11-20 05:36:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-11-20 05:36:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-11-20 05:36:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-11-20 05:36:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-11-20 05:36:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 05:36:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-20 05:36:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-20 05:36:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-20 05:36:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-20 05:36:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-20 05:36:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 05:36:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-20 05:36:51,488 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-20 05:36:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 05:36:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-20 05:36:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-20 05:36:51,488 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-20 05:36:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 05:36:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-20 05:36:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-20 05:36:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-11-20 05:36:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-11-20 05:36:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-20 05:36:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-20 05:36:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-11-20 05:36:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-11-20 05:36:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-20 05:36:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-20 05:36:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-20 05:36:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-20 05:36:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 05:36:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 05:36:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-20 05:36:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-20 05:36:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 05:36:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 05:36:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-20 05:36:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-20 05:36:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 05:36:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 05:36:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 05:36:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 05:36:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-20 05:36:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 05:36:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 05:36:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-11-20 05:36:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-11-20 05:36:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-11-20 05:36:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-11-20 05:36:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-20 05:36:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-20 05:36:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-11-20 05:36:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-11-20 05:36:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-11-20 05:36:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-11-20 05:36:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-20 05:36:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-20 05:36:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 05:36:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 05:36:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-20 05:36:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-20 05:36:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-20 05:36:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-20 05:36:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-11-20 05:36:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-11-20 05:36:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:36:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 05:36:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 05:36:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-20 05:36:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-20 05:36:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-11-20 05:36:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-11-20 05:36:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:36:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 05:36:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 05:36:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-20 05:36:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-20 05:36:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-11-20 05:36:51,505 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-11-20 05:36:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-20 05:36:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-20 05:36:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-20 05:36:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:36:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 05:36:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:36:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-20 05:36:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-20 05:36:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-11-20 05:36:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-11-20 05:36:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 05:36:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 05:36:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-20 05:36:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-11-20 05:36:51,510 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-11-20 05:36:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 05:36:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-20 05:36:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-11-20 05:36:51,511 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-11-20 05:36:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-20 05:36:51,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-20 05:36:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 05:36:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 05:36:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-20 05:36:51,513 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-20 05:36:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 05:36:51,513 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 05:36:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-20 05:36:51,513 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-20 05:36:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-11-20 05:36:51,515 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-11-20 05:36:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-11-20 05:36:51,519 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-11-20 05:36:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-20 05:36:51,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-20 05:36:51,520 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-20 05:36:51,522 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-20 05:36:51,523 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-20 05:36:51,523 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-20 05:36:51,523 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-20 05:36:51,528 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-20 05:36:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 05:36:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 05:36:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-20 05:36:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-20 05:36:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-20 05:36:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-20 05:36:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-20 05:36:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-20 05:36:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-11-20 05:36:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-11-20 05:36:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-20 05:36:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-20 05:36:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 05:36:51,531 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 05:36:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-20 05:36:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-11-20 05:36:51,531 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-11-20 05:36:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-20 05:36:51,532 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-20 05:36:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-20 05:36:51,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-20 05:36:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-20 05:36:51,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-20 05:36:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-20 05:36:51,533 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-20 05:36:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-20 05:36:51,533 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-20 05:36:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-11-20 05:36:51,534 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-11-20 05:36:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-11-20 05:36:51,534 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-11-20 05:36:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-20 05:36:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-20 05:36:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-20 05:36:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-20 05:36:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-20 05:36:51,535 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-20 05:36:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-20 05:36:51,535 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-20 05:36:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-20 05:36:51,536 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-20 05:36:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 05:36:51,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 05:36:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-11-20 05:36:51,536 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-11-20 05:36:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-20 05:36:51,537 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-20 05:36:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:36:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-20 05:36:51,537 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-20 05:36:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-20 05:36:51,538 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-20 05:36:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-11-20 05:36:51,538 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-11-20 05:36:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:36:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-20 05:36:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-20 05:36:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-11-20 05:36:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-11-20 05:36:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-20 05:36:51,541 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-20 05:36:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:36:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-20 05:36:51,541 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-20 05:36:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 05:36:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-20 05:36:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-20 05:36:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-20 05:36:51,542 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-20 05:36:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 05:36:51,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 05:36:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-20 05:36:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-20 05:36:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-20 05:36:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-20 05:36:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-20 05:36:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-20 05:36:51,544 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-20 05:36:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-20 05:36:51,544 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-20 05:36:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 05:36:51,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 05:36:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 05:36:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 05:36:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-20 05:36:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-20 05:36:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-20 05:36:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-20 05:36:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 05:36:51,546 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 05:36:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-20 05:36:51,546 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-20 05:36:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-11-20 05:36:51,546 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-11-20 05:36:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-20 05:36:51,547 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-20 05:36:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-20 05:36:51,547 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-20 05:36:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-20 05:36:51,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-20 05:36:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-20 05:36:51,548 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-20 05:36:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-20 05:36:51,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-20 05:36:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 05:36:51,549 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 05:36:51,549 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-20 05:36:51,549 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-20 05:36:51,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-20 05:36:51,549 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-11-20 05:36:51,550 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-11-20 05:36:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-11-20 05:36:51,550 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-11-20 05:36:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-20 05:36:51,550 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-20 05:36:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:36:51,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:36:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 05:36:51,556 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 05:36:52,543 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:36:52,552 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:37:21,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-20 05:37:21,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: __copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2021-11-20 05:37:21,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-20 05:37:21,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: __copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2021-11-20 05:37:21,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-11-20 05:37:21,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-11-20 05:37:21,795 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0bv64 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:37:21,795 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0bv64 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:37:21,795 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-11-20 05:37:21,795 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-11-20 05:37:21,796 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-11-20 05:37:21,796 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0bv64 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:37:21,796 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0bv64 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:37:21,796 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-11-20 05:37:21,796 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16bv32 == __copy_to_user_~size#1; [2021-11-20 05:37:21,797 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:37:21,797 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10bv32 == __copy_to_user_~size#1; [2021-11-20 05:37:21,797 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2021-11-20 05:37:21,797 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:37:21,798 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8bv32 == __copy_to_user_~size#1; [2021-11-20 05:37:21,798 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := __copy_to_user_~tmp___2~4#1[32:0]; [2021-11-20 05:37:21,798 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:37:21,798 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4bv32 == __copy_to_user_~size#1; [2021-11-20 05:37:21,798 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-20 05:37:21,799 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2bv32 == __copy_to_user_~size#1; [2021-11-20 05:37:40,059 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-20 05:37:40,059 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: __copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2021-11-20 05:37:40,060 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0bv64 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:37:40,060 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0bv64 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:37:40,060 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-11-20 05:37:40,060 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-11-20 05:37:40,061 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-11-20 05:37:40,061 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-20 05:37:40,061 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: __copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2021-11-20 05:37:40,061 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0bv64 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:37:40,062 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0bv64 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:37:40,062 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:37:40,062 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4bv32 == __copy_from_user_~size#1; [2021-11-20 05:37:40,062 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:37:40,062 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8bv32 == __copy_from_user_~size#1; [2021-11-20 05:37:40,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2bv32 == __copy_from_user_~size#1; [2021-11-20 05:37:40,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:37:40,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-11-20 05:37:40,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-11-20 05:37:40,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := __copy_from_user_~tmp___2~3#1[32:0]; [2021-11-20 05:37:40,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2021-11-20 05:37:40,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-20 05:37:40,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10bv32 == __copy_from_user_~size#1; [2021-11-20 05:37:40,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-11-20 05:37:40,065 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16bv32 == __copy_from_user_~size#1; [2021-11-20 05:37:49,042 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:37:49,075 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:37:49,075 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:37:49,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:37:49 BoogieIcfgContainer [2021-11-20 05:37:49,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:37:49,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:37:49,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:37:49,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:37:49,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:36:45" (1/3) ... [2021-11-20 05:37:49,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec808c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:37:49, skipping insertion in model container [2021-11-20 05:37:49,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:50" (2/3) ... [2021-11-20 05:37:49,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec808c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:37:49, skipping insertion in model container [2021-11-20 05:37:49,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:37:49" (3/3) ... [2021-11-20 05:37:49,093 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-20 05:37:49,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:37:49,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:37:49,206 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:37:49,217 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:37:49,218 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:37:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 2218 states, 1540 states have (on average 1.346103896103896) internal successors, (2073), 1586 states have internal predecessors, (2073), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) [2021-11-20 05:37:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:37:49,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:37:49,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:37:49,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:37:49,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:49,332 INFO L85 PathProgramCache]: Analyzing trace with hash -801145376, now seen corresponding path program 1 times [2021-11-20 05:37:49,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:37:49,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192570296] [2021-11-20 05:37:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:49,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:37:49,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:37:49,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:37:49,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:37:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:50,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:37:50,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:37:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:37:50,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:37:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:37:50,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:37:50,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192570296] [2021-11-20 05:37:50,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192570296] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:50,894 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:50,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:37:50,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82077028] [2021-11-20 05:37:50,897 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:50,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:37:50,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:37:50,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:37:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:37:50,951 INFO L87 Difference]: Start difference. First operand has 2218 states, 1540 states have (on average 1.346103896103896) internal successors, (2073), 1586 states have internal predecessors, (2073), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:37:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:37:51,463 INFO L93 Difference]: Finished difference Result 4422 states and 6498 transitions. [2021-11-20 05:37:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:37:51,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-20 05:37:51,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:37:51,538 INFO L225 Difference]: With dead ends: 4422 [2021-11-20 05:37:51,538 INFO L226 Difference]: Without dead ends: 2207 [2021-11-20 05:37:51,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:37:51,576 INFO L933 BasicCegarLoop]: 3205 mSDtfsCounter, 3193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3193 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:37:51,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3193 Valid, 3205 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:37:51,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-20 05:37:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-11-20 05:37:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1532 states have (on average 1.3426892950391645) internal successors, (2057), 1575 states have internal predecessors, (2057), 571 states have call successors, (571), 104 states have call predecessors, (571), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-20 05:37:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3194 transitions. [2021-11-20 05:37:51,922 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3194 transitions. Word has length 16 [2021-11-20 05:37:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:37:51,925 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3194 transitions. [2021-11-20 05:37:51,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:37:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3194 transitions. [2021-11-20 05:37:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:37:51,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:37:51,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:37:51,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:37:52,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:37:52,147 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:37:52,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:52,148 INFO L85 PathProgramCache]: Analyzing trace with hash 933280137, now seen corresponding path program 1 times [2021-11-20 05:37:52,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:37:52,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239843591] [2021-11-20 05:37:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:52,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:37:52,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:37:52,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:37:52,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:37:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:53,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:37:53,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:37:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:37:53,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:37:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:37:53,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:37:53,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239843591] [2021-11-20 05:37:53,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239843591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:53,494 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:53,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:37:53,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366799976] [2021-11-20 05:37:53,495 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:53,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:37:53,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:37:53,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:37:53,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:37:53,498 INFO L87 Difference]: Start difference. First operand 2207 states and 3194 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:37:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:37:53,872 INFO L93 Difference]: Finished difference Result 2209 states and 3195 transitions. [2021-11-20 05:37:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:37:53,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-20 05:37:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:37:53,895 INFO L225 Difference]: With dead ends: 2209 [2021-11-20 05:37:53,895 INFO L226 Difference]: Without dead ends: 2206 [2021-11-20 05:37:53,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:37:53,900 INFO L933 BasicCegarLoop]: 3191 mSDtfsCounter, 3178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:37:53,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3178 Valid, 3191 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:37:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-11-20 05:37:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2206. [2021-11-20 05:37:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1532 states have (on average 1.3420365535248042) internal successors, (2056), 1574 states have internal predecessors, (2056), 570 states have call successors, (570), 104 states have call predecessors, (570), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-20 05:37:54,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3192 transitions. [2021-11-20 05:37:54,102 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3192 transitions. Word has length 17 [2021-11-20 05:37:54,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:37:54,103 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 3192 transitions. [2021-11-20 05:37:54,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:37:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3192 transitions. [2021-11-20 05:37:54,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:37:54,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:37:54,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:37:54,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:37:54,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:37:54,321 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:37:54,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:54,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1134098941, now seen corresponding path program 1 times [2021-11-20 05:37:54,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:37:54,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38303859] [2021-11-20 05:37:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:54,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:37:54,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:37:54,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:37:54,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:37:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:55,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:37:55,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:37:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:37:55,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:37:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:37:55,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:37:55,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38303859] [2021-11-20 05:37:55,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38303859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:55,675 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:55,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:37:55,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884794868] [2021-11-20 05:37:55,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:55,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:37:55,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:37:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:37:55,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:37:55,677 INFO L87 Difference]: Start difference. First operand 2206 states and 3192 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:37:55,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:37:55,959 INFO L93 Difference]: Finished difference Result 2208 states and 3193 transitions. [2021-11-20 05:37:55,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:37:55,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-20 05:37:55,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:37:55,983 INFO L225 Difference]: With dead ends: 2208 [2021-11-20 05:37:55,983 INFO L226 Difference]: Without dead ends: 2205 [2021-11-20 05:37:55,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:37:55,990 INFO L933 BasicCegarLoop]: 3189 mSDtfsCounter, 3175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3175 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:37:55,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3175 Valid, 3189 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:37:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2021-11-20 05:37:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2205. [2021-11-20 05:37:56,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1532 states have (on average 1.3413838120104438) internal successors, (2055), 1573 states have internal predecessors, (2055), 569 states have call successors, (569), 104 states have call predecessors, (569), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-20 05:37:56,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3190 transitions. [2021-11-20 05:37:56,199 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3190 transitions. Word has length 18 [2021-11-20 05:37:56,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:37:56,200 INFO L470 AbstractCegarLoop]: Abstraction has 2205 states and 3190 transitions. [2021-11-20 05:37:56,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:37:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3190 transitions. [2021-11-20 05:37:56,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:37:56,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:37:56,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:37:56,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:37:56,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:37:56,415 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:37:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:56,415 INFO L85 PathProgramCache]: Analyzing trace with hash -798336052, now seen corresponding path program 1 times [2021-11-20 05:37:56,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:37:56,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724711016] [2021-11-20 05:37:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:56,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:37:56,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:37:56,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:37:56,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:37:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:57,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:37:57,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:37:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:37:57,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:37:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:37:57,589 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:37:57,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724711016] [2021-11-20 05:37:57,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724711016] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:57,589 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:57,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:37:57,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053594755] [2021-11-20 05:37:57,590 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:57,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:37:57,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:37:57,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:37:57,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:37:57,592 INFO L87 Difference]: Start difference. First operand 2205 states and 3190 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:37:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:37:58,053 INFO L93 Difference]: Finished difference Result 4994 states and 7160 transitions. [2021-11-20 05:37:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:37:58,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-20 05:37:58,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:37:58,081 INFO L225 Difference]: With dead ends: 4994 [2021-11-20 05:37:58,082 INFO L226 Difference]: Without dead ends: 2791 [2021-11-20 05:37:58,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:37:58,100 INFO L933 BasicCegarLoop]: 3581 mSDtfsCounter, 1201 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 6307 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:37:58,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 6307 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:37:58,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-11-20 05:37:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2788. [2021-11-20 05:37:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 1930 states have (on average 1.3233160621761657) internal successors, (2554), 1990 states have internal predecessors, (2554), 688 states have call successors, (688), 172 states have call predecessors, (688), 169 states have return successors, (693), 667 states have call predecessors, (693), 679 states have call successors, (693) [2021-11-20 05:37:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3935 transitions. [2021-11-20 05:37:58,355 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3935 transitions. Word has length 19 [2021-11-20 05:37:58,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:37:58,355 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 3935 transitions. [2021-11-20 05:37:58,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:37:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3935 transitions. [2021-11-20 05:37:58,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 05:37:58,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:37:58,362 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:37:58,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:37:58,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:37:58,577 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:37:58,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:58,578 INFO L85 PathProgramCache]: Analyzing trace with hash -587069341, now seen corresponding path program 1 times [2021-11-20 05:37:58,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:37:58,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840068102] [2021-11-20 05:37:58,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:58,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:37:58,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:37:58,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:37:58,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:37:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:59,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:37:59,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:37:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:37:59,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:38:00,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:00,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840068102] [2021-11-20 05:38:00,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840068102] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:00,193 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:00,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 05:38:00,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213649440] [2021-11-20 05:38:00,194 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:00,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:38:00,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:38:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:38:00,196 INFO L87 Difference]: Start difference. First operand 2788 states and 3935 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 05:38:00,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:38:00,688 INFO L93 Difference]: Finished difference Result 5605 states and 7919 transitions. [2021-11-20 05:38:00,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:38:00,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 55 [2021-11-20 05:38:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:38:00,788 INFO L225 Difference]: With dead ends: 5605 [2021-11-20 05:38:00,788 INFO L226 Difference]: Without dead ends: 2828 [2021-11-20 05:38:00,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:38:00,809 INFO L933 BasicCegarLoop]: 3176 mSDtfsCounter, 58 mSDsluCounter, 6250 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 9426 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:38:00,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 9426 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:38:00,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2021-11-20 05:38:01,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2828. [2021-11-20 05:38:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 1962 states have (on average 1.3236493374108054) internal successors, (2597), 2022 states have internal predecessors, (2597), 696 states have call successors, (696), 172 states have call predecessors, (696), 169 states have return successors, (701), 675 states have call predecessors, (701), 687 states have call successors, (701) [2021-11-20 05:38:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3994 transitions. [2021-11-20 05:38:01,158 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3994 transitions. Word has length 55 [2021-11-20 05:38:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:38:01,159 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 3994 transitions. [2021-11-20 05:38:01,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 05:38:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3994 transitions. [2021-11-20 05:38:01,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-20 05:38:01,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:01,170 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:01,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:38:01,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:01,385 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:38:01,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:01,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1997599171, now seen corresponding path program 1 times [2021-11-20 05:38:01,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:01,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872089341] [2021-11-20 05:38:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:01,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:01,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:01,390 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:01,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:38:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:02,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:38:02,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:38:02,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:38:02,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:02,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872089341] [2021-11-20 05:38:02,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872089341] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:02,695 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:02,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:38:02,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506532754] [2021-11-20 05:38:02,696 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:02,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:38:02,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:38:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:38:02,697 INFO L87 Difference]: Start difference. First operand 2828 states and 3994 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 05:38:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:38:02,954 INFO L93 Difference]: Finished difference Result 5647 states and 8045 transitions. [2021-11-20 05:38:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:38:02,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2021-11-20 05:38:02,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:38:02,980 INFO L225 Difference]: With dead ends: 5647 [2021-11-20 05:38:02,980 INFO L226 Difference]: Without dead ends: 2830 [2021-11-20 05:38:03,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:38:03,011 INFO L933 BasicCegarLoop]: 3167 mSDtfsCounter, 0 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6327 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:38:03,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6327 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:38:03,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2021-11-20 05:38:03,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2828. [2021-11-20 05:38:03,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 1962 states have (on average 1.32059123343527) internal successors, (2591), 2022 states have internal predecessors, (2591), 696 states have call successors, (696), 172 states have call predecessors, (696), 169 states have return successors, (701), 675 states have call predecessors, (701), 687 states have call successors, (701) [2021-11-20 05:38:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3988 transitions. [2021-11-20 05:38:03,237 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3988 transitions. Word has length 59 [2021-11-20 05:38:03,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:38:03,239 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 3988 transitions. [2021-11-20 05:38:03,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 05:38:03,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3988 transitions. [2021-11-20 05:38:03,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 05:38:03,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:03,245 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:03,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:38:03,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:03,462 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:38:03,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:03,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1160460849, now seen corresponding path program 1 times [2021-11-20 05:38:03,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:03,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792091765] [2021-11-20 05:38:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:03,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:03,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:03,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:03,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:38:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:04,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:38:04,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:38:04,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:38:05,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:05,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792091765] [2021-11-20 05:38:05,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792091765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:05,193 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:05,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:38:05,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841520259] [2021-11-20 05:38:05,194 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:05,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:38:05,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:38:05,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:38:05,195 INFO L87 Difference]: Start difference. First operand 2828 states and 3988 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 05:38:05,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:38:05,509 INFO L93 Difference]: Finished difference Result 4642 states and 6495 transitions. [2021-11-20 05:38:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:38:05,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2021-11-20 05:38:05,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:38:05,535 INFO L225 Difference]: With dead ends: 4642 [2021-11-20 05:38:05,536 INFO L226 Difference]: Without dead ends: 2350 [2021-11-20 05:38:05,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:38:05,556 INFO L933 BasicCegarLoop]: 3066 mSDtfsCounter, 2146 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:38:05,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2146 Valid, 4068 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:38:05,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2021-11-20 05:38:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2350. [2021-11-20 05:38:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 1637 states have (on average 1.3091020158827122) internal successors, (2143), 1682 states have internal predecessors, (2143), 555 states have call successors, (555), 161 states have call predecessors, (555), 157 states have return successors, (542), 535 states have call predecessors, (542), 542 states have call successors, (542) [2021-11-20 05:38:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3240 transitions. [2021-11-20 05:38:05,762 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3240 transitions. Word has length 65 [2021-11-20 05:38:05,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:38:05,763 INFO L470 AbstractCegarLoop]: Abstraction has 2350 states and 3240 transitions. [2021-11-20 05:38:05,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 05:38:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3240 transitions. [2021-11-20 05:38:05,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 05:38:05,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:05,768 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:05,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:38:05,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:05,988 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:38:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:05,989 INFO L85 PathProgramCache]: Analyzing trace with hash 904423170, now seen corresponding path program 1 times [2021-11-20 05:38:05,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:05,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272381511] [2021-11-20 05:38:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:05,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:05,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:05,993 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:06,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:38:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:06,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:38:06,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:38:07,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:38:07,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:07,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272381511] [2021-11-20 05:38:07,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272381511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:07,720 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:07,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 05:38:07,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270440328] [2021-11-20 05:38:07,721 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:07,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:38:07,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:07,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:38:07,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:38:07,722 INFO L87 Difference]: Start difference. First operand 2350 states and 3240 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-20 05:38:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:38:08,207 INFO L93 Difference]: Finished difference Result 2382 states and 3290 transitions. [2021-11-20 05:38:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:38:08,208 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2021-11-20 05:38:08,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:38:08,230 INFO L225 Difference]: With dead ends: 2382 [2021-11-20 05:38:08,230 INFO L226 Difference]: Without dead ends: 2372 [2021-11-20 05:38:08,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:38:08,235 INFO L933 BasicCegarLoop]: 2566 mSDtfsCounter, 37 mSDsluCounter, 12814 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 15380 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:38:08,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 15380 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:38:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-11-20 05:38:08,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2355. [2021-11-20 05:38:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 1641 states have (on average 1.3083485679463742) internal successors, (2147), 1686 states have internal predecessors, (2147), 555 states have call successors, (555), 161 states have call predecessors, (555), 158 states have return successors, (545), 536 states have call predecessors, (545), 542 states have call successors, (545) [2021-11-20 05:38:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3247 transitions. [2021-11-20 05:38:08,456 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3247 transitions. Word has length 65 [2021-11-20 05:38:08,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:38:08,457 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 3247 transitions. [2021-11-20 05:38:08,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-20 05:38:08,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3247 transitions. [2021-11-20 05:38:08,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 05:38:08,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:08,460 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:08,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:38:08,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:08,683 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:38:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1585041309, now seen corresponding path program 1 times [2021-11-20 05:38:08,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:08,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639937112] [2021-11-20 05:38:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:08,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:08,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:08,687 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:08,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:38:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:38:14,701 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:38:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:38:20,771 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 05:38:20,771 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:38:20,772 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 05:38:20,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:38:20,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:20,999 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:21,002 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:38:21,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:38:21 BoogieIcfgContainer [2021-11-20 05:38:21,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:38:21,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:38:21,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:38:21,106 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:38:21,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:37:49" (3/4) ... [2021-11-20 05:38:21,111 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:38:21,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:38:21,121 INFO L158 Benchmark]: Toolchain (without parser) took 95709.98ms. Allocated memory was 73.4MB in the beginning and 654.3MB in the end (delta: 580.9MB). Free memory was 40.3MB in the beginning and 427.2MB in the end (delta: -386.8MB). Peak memory consumption was 192.9MB. Max. memory is 16.1GB. [2021-11-20 05:38:21,121 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 73.4MB. Free memory was 53.4MB in the beginning and 53.3MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:38:21,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4959.85ms. Allocated memory was 73.4MB in the beginning and 272.6MB in the end (delta: 199.2MB). Free memory was 40.1MB in the beginning and 169.2MB in the end (delta: -129.1MB). Peak memory consumption was 95.4MB. Max. memory is 16.1GB. [2021-11-20 05:38:21,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 421.91ms. Allocated memory is still 272.6MB. Free memory was 169.2MB in the beginning and 137.7MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-20 05:38:21,122 INFO L158 Benchmark]: Boogie Preprocessor took 507.69ms. Allocated memory is still 272.6MB. Free memory was 137.7MB in the beginning and 155.0MB in the end (delta: -17.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2021-11-20 05:38:21,123 INFO L158 Benchmark]: RCFGBuilder took 57781.81ms. Allocated memory was 272.6MB in the beginning and 545.3MB in the end (delta: 272.6MB). Free memory was 155.0MB in the beginning and 345.4MB in the end (delta: -190.4MB). Peak memory consumption was 307.9MB. Max. memory is 16.1GB. [2021-11-20 05:38:21,123 INFO L158 Benchmark]: TraceAbstraction took 32020.18ms. Allocated memory was 545.3MB in the beginning and 654.3MB in the end (delta: 109.1MB). Free memory was 345.4MB in the beginning and 427.2MB in the end (delta: -81.8MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2021-11-20 05:38:21,124 INFO L158 Benchmark]: Witness Printer took 8.38ms. Allocated memory is still 654.3MB. Free memory is still 427.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:38:21,126 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 73.4MB. Free memory was 53.4MB in the beginning and 53.3MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4959.85ms. Allocated memory was 73.4MB in the beginning and 272.6MB in the end (delta: 199.2MB). Free memory was 40.1MB in the beginning and 169.2MB in the end (delta: -129.1MB). Peak memory consumption was 95.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 421.91ms. Allocated memory is still 272.6MB. Free memory was 169.2MB in the beginning and 137.7MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 507.69ms. Allocated memory is still 272.6MB. Free memory was 137.7MB in the beginning and 155.0MB in the end (delta: -17.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * RCFGBuilder took 57781.81ms. Allocated memory was 272.6MB in the beginning and 545.3MB in the end (delta: 272.6MB). Free memory was 155.0MB in the beginning and 345.4MB in the end (delta: -190.4MB). Peak memory consumption was 307.9MB. Max. memory is 16.1GB. * TraceAbstraction took 32020.18ms. Allocated memory was 545.3MB in the beginning and 654.3MB in the end (delta: 109.1MB). Free memory was 345.4MB in the beginning and 427.2MB in the end (delta: -81.8MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. * Witness Printer took 8.38ms. Allocated memory is still 654.3MB. Free memory is still 427.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 10595. Possible FailurePath: [L5971] static unsigned int vhost_zcopy_mask ; [L9348] static int experimental_zcopytx ; [L10590-L10593] static struct file_operations const vhost_net_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_net_ioctl, & vhost_net_compat_ioctl, 0, & vhost_net_open, 0, & vhost_net_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L10620] int LDV_IN_INTERRUPT ; [L11002] static int ldv_mutex_cred_guard_mutex ; [L11109] static int ldv_mutex_lock ; [L11216] static int ldv_mutex_mtx ; [L11323] static int ldv_mutex_mutex ; VAL [__this_module={0:67108864}, 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={0:67108864}, 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={0:67108864}, 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={0:67108864}, 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={0:67108864}, 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={0:67108864}, 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={0:67108864}, 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={0:67108864}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: [L10673] case 3: VAL [__this_module={0:67108864}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={0:67108864}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10675] CALL vhost_net_compat_ioctl(var_group2, var_vhost_net_compat_ioctl_28_p1, var_vhost_net_compat_ioctl_28_p2) [L10582] void *tmp ; [L10583] long tmp___0 ; [L10585] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L9300] return ((void *)((unsigned long )uptr)); VAL [\old(uptr)=536952832, \result={0:536952832}, __this_module={0:67108864}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, uptr=536952832, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10585] RET, EXPR compat_ptr((compat_uptr_t )arg) [L10585] tmp = compat_ptr((compat_uptr_t )arg) [L10586] CALL vhost_net_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, 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={8724154368:1108168671490}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, 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={8724154368:1108168671490}, lock={8724154368:1108168671490}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, 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={8724154368:1108168671490}, lock={8724154368:1108168671490}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, experimental_zcopytx=0, ldv_func_arg1={8724154368:1108168671490}, ldv_func_arg1={8724154368:1108168671490}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, experimental_zcopytx=0, ldv_func_arg1={8724154368:1108168671490}, ldv_func_arg1={8724154368:1108168671490}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, dev={8724154368:1108168671474}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, dev={8724154368:1108168671474}, dev={8724154368:1108168671474}, 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={0:67108864}, 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={0:67108864}, 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={0:1048584}, __this_module={0:67108864}, 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__={0:1048584}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, dev={8724154368:1108168671474}, dev={8724154368:1108168671474}, experimental_zcopytx=0, get_current()={0:1048584}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, dev={8724154368:1108168671474}, dev={8724154368:1108168671474}, dev->mm={576460752303423488:576531121584505376}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={0:1048584}, tmp->mm={0:1152991873887928864}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L VAL [(unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L=0, \old(ldv_mutex_mutex)=1, __this_module={0:67108864}, dev={8724154368:1108168671474}, dev={8724154368:1108168671474}, dev->mm={576460752303423488:576531121584505376}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={0:1048584}, tmp->mm={0:1152991873887928864}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, 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={8724154368:1108168671474}, n={8724154368:1108168671474}, rx_sock={237:0}, tx_sock={253:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:67108864}, 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={8724154368:1108168671474}, n={8724154368:1108168671474}, rx_sock={237:0}, tx_sock={253:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:67108864}, 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={8724154368:1108168671474}, rx_sock={237:0}, tx_sock={253:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:67108864}, 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={8724154368:1108168671474}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={8724154368:1108168688890}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:67108864}, 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={8724154368:1108168688898}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:67108864}, 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={8724154368:1108168688898}, lock={8724154368:1108168688898}, 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={0:67108864}, 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={0:67108864}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 105 procedures, 2218 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13015 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12988 mSDsluCounter, 51093 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25952 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 25141 mSDtfsCounter, 82 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 612 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2828occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 7.2s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 382 NumberOfCodeBlocks, 382 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 999 SizeOfPredicates, 1 NumberOfNonLiveVariables, 5022 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 20/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 05:38:21,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552f27b6-6897-4c9e-9a1a-d8d6f3d2609e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample