./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/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_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:58:41,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:58:41,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:58:41,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:58:41,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:58:41,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:58:41,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:58:41,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:58:41,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:58:41,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:58:41,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:58:41,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:58:41,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:58:41,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:58:41,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:58:41,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:58:41,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:58:41,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:58:41,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:58:41,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:58:41,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:58:41,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:58:41,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:58:41,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:58:41,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:58:41,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:58:41,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:58:41,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:58:41,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:58:41,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:58:41,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:58:41,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:58:41,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:58:41,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:58:41,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:58:41,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:58:41,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:58:41,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:58:41,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:58:41,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:58:41,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:58:41,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:58:41,654 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:58:41,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:58:41,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:58:41,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:58:41,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:58:41,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:58:41,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:58:41,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:58:41,662 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:58:41,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:58:41,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:58:41,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:58:41,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:58:41,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:58:41,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:58:41,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:58:41,669 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:58:41,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:58:41,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:58:41,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:58:41,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:58:41,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:41,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:58:41,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:58:41,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:58:41,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:58:41,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:58:41,673 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:58:41,673 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:58:41,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:58:41,674 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_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-10-17 10:58:42,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:58:42,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:58:42,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:58:42,071 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:58:42,072 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:58:42,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-10-17 10:58:42,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/data/079b51351/b0c4459f8d934fa1afd7bf64bf3e53d4/FLAG1b06bc890 [2022-10-17 10:58:43,190 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:58:43,191 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-10-17 10:58:43,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/data/079b51351/b0c4459f8d934fa1afd7bf64bf3e53d4/FLAG1b06bc890 [2022-10-17 10:58:43,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/data/079b51351/b0c4459f8d934fa1afd7bf64bf3e53d4 [2022-10-17 10:58:43,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:58:43,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:58:43,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:43,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:58:43,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:58:43,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:43" (1/1) ... [2022-10-17 10:58:43,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ace52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:43, skipping insertion in model container [2022-10-17 10:58:43,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:43" (1/1) ... [2022-10-17 10:58:43,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:58:43,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:58:46,668 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_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-10-17 10:58:46,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:46,832 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:58:47,375 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_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-10-17 10:58:47,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:47,549 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:58:47,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47 WrapperNode [2022-10-17 10:58:47,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:47,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:47,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:58:47,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:58:47,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:47,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:48,066 INFO L138 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6671 [2022-10-17 10:58:48,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:48,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:58:48,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:58:48,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:58:48,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:48,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:48,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:48,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:48,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:48,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:48,510 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:48,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:48,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:58:48,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:58:48,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:58:48,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:58:48,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (1/1) ... [2022-10-17 10:58:48,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:48,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:58:48,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:58:48,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9baaffe4-d199-429b-8f9a-1c7e8c5b81aa/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:58:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-10-17 10:58:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-10-17 10:58:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-10-17 10:58:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-10-17 10:58:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-10-17 10:58:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-10-17 10:58:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-10-17 10:58:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-10-17 10:58:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-10-17 10:58:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-10-17 10:58:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-10-17 10:58:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-10-17 10:58:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 10:58:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-10-17 10:58:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-10-17 10:58:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:58:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-10-17 10:58:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-10-17 10:58:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-10-17 10:58:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-10-17 10:58:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-10-17 10:58:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-10-17 10:58:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-10-17 10:58:48,860 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-10-17 10:58:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-10-17 10:58:48,860 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-10-17 10:58:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-10-17 10:58:48,861 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-10-17 10:58:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-17 10:58:48,861 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-17 10:58:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-10-17 10:58:48,861 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-10-17 10:58:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:58:48,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:58:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-10-17 10:58:48,862 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-10-17 10:58:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:58:48,862 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:58:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:58:48,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:58:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-10-17 10:58:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-10-17 10:58:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-10-17 10:58:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-10-17 10:58:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-10-17 10:58:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-10-17 10:58:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-10-17 10:58:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-10-17 10:58:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-10-17 10:58:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-10-17 10:58:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-10-17 10:58:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-10-17 10:58:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-10-17 10:58:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2022-10-17 10:58:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2022-10-17 10:58:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 10:58:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 10:58:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 10:58:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 10:58:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-10-17 10:58:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-10-17 10:58:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-10-17 10:58:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-10-17 10:58:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-10-17 10:58:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-10-17 10:58:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:58:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-10-17 10:58:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-10-17 10:58:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-10-17 10:58:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-10-17 10:58:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-10-17 10:58:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-10-17 10:58:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:58:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 10:58:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 10:58:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-10-17 10:58:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-10-17 10:58:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-10-17 10:58:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-10-17 10:58:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:58:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:58:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-10-17 10:58:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-10-17 10:58:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-10-17 10:58:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-10-17 10:58:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 10:58:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 10:58:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-10-17 10:58:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-10-17 10:58:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-10-17 10:58:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-10-17 10:58:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-10-17 10:58:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-10-17 10:58:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-10-17 10:58:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-10-17 10:58:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 10:58:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 10:58:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-10-17 10:58:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-10-17 10:58:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 10:58:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 10:58:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-10-17 10:58:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-10-17 10:58:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-10-17 10:58:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-10-17 10:58:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-10-17 10:58:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-10-17 10:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-10-17 10:58:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-10-17 10:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-10-17 10:58:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-10-17 10:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 10:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-17 10:58:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-17 10:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-10-17 10:58:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-10-17 10:58:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-10-17 10:58:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-10-17 10:58:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 10:58:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-10-17 10:58:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-10-17 10:58:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:58:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-10-17 10:58:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-10-17 10:58:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-10-17 10:58:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-10-17 10:58:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-10-17 10:58:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-10-17 10:58:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-10-17 10:58:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-10-17 10:58:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:58:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:58:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-10-17 10:58:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-10-17 10:58:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-10-17 10:58:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:58:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-10-17 10:58:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-10-17 10:58:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-10-17 10:58:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-10-17 10:58:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-10-17 10:58:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-10-17 10:58:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-10-17 10:58:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-10-17 10:58:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-10-17 10:58:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-10-17 10:58:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-10-17 10:58:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-10-17 10:58:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-10-17 10:58:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-10-17 10:58:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-10-17 10:58:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-10-17 10:58:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-10-17 10:58:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-10-17 10:58:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-10-17 10:58:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-10-17 10:58:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:58:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:58:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-10-17 10:58:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-10-17 10:58:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-10-17 10:58:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-10-17 10:58:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:58:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-10-17 10:58:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-10-17 10:58:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-10-17 10:58:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-10-17 10:58:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-10-17 10:58:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-10-17 10:58:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:58:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-10-17 10:58:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-10-17 10:58:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-10-17 10:58:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-10-17 10:58:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-10-17 10:58:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-10-17 10:58:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:58:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-10-17 10:58:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-10-17 10:58:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 10:58:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-10-17 10:58:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-10-17 10:58:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:58:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:58:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-10-17 10:58:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-10-17 10:58:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-10-17 10:58:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-10-17 10:58:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-10-17 10:58:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-10-17 10:58:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-10-17 10:58:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-10-17 10:58:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-10-17 10:58:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-10-17 10:58:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2022-10-17 10:58:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2022-10-17 10:58:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-10-17 10:58:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-10-17 10:58:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-10-17 10:58:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-10-17 10:58:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-10-17 10:58:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-10-17 10:58:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-17 10:58:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-17 10:58:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-10-17 10:58:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-10-17 10:58:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-10-17 10:58:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-10-17 10:58:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-10-17 10:58:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-10-17 10:58:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-10-17 10:58:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-10-17 10:58:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-10-17 10:58:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-10-17 10:58:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:58:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:58:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-10-17 10:58:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-10-17 10:58:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-10-17 10:58:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-10-17 10:58:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-10-17 10:58:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-10-17 10:58:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-10-17 10:58:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-10-17 10:58:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:58:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-10-17 10:58:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-10-17 10:58:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-10-17 10:58:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-10-17 10:58:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-10-17 10:58:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-10-17 10:58:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:58:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:58:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 10:58:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 10:58:50,051 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:58:50,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:58:55,762 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-10-17 10:58:55,763 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: assume -9223372036854775808 <= __copy_to_user_#t~ret139#1 && __copy_to_user_#t~ret139#1 <= 9223372036854775807;__copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2022-10-17 10:58:55,763 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-10-17 10:58:55,763 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: assume -9223372036854775808 <= __copy_to_user_#t~ret138#1 && __copy_to_user_#t~ret138#1 <= 9223372036854775807;__copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2022-10-17 10:58:55,763 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-10-17 10:58:55,763 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-10-17 10:58:55,763 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-10-17 10:58:55,763 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-10-17 10:58:55,763 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-10-17 10:58:55,764 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-10-17 10:58:55,764 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-10-17 10:58:55,764 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-10-17 10:58:55,764 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-10-17 10:58:55,764 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-10-17 10:58:55,764 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16 == __copy_to_user_~size#1; [2022-10-17 10:58:55,764 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-10-17 10:58:55,765 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10 == __copy_to_user_~size#1; [2022-10-17 10:58:55,765 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2022-10-17 10:58:55,765 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-10-17 10:58:55,765 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8 == __copy_to_user_~size#1; [2022-10-17 10:58:55,765 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := (if __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 else __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-10-17 10:58:55,765 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-10-17 10:58:55,765 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4 == __copy_to_user_~size#1; [2022-10-17 10:58:55,766 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-10-17 10:58:55,766 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2 == __copy_to_user_~size#1; [2022-10-17 10:58:58,194 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2022-10-17 10:58:58,194 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: assume -9223372036854775808 <= __copy_from_user_#t~ret133#1 && __copy_from_user_#t~ret133#1 <= 9223372036854775807;__copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2022-10-17 10:58:58,195 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-10-17 10:58:58,195 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-10-17 10:58:58,195 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-10-17 10:58:58,195 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-10-17 10:58:58,195 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-10-17 10:58:58,195 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2022-10-17 10:58:58,196 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: assume -9223372036854775808 <= __copy_from_user_#t~ret134#1 && __copy_from_user_#t~ret134#1 <= 9223372036854775807;__copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2022-10-17 10:58:58,196 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-10-17 10:58:58,196 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-10-17 10:58:58,196 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-10-17 10:58:58,196 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4 == __copy_from_user_~size#1; [2022-10-17 10:58:58,197 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-10-17 10:58:58,197 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8 == __copy_from_user_~size#1; [2022-10-17 10:58:58,197 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2 == __copy_from_user_~size#1; [2022-10-17 10:58:58,197 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-10-17 10:58:58,197 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-10-17 10:58:58,197 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-10-17 10:58:58,198 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-10-17 10:58:58,198 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2022-10-17 10:58:58,198 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-10-17 10:58:58,198 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10 == __copy_from_user_~size#1; [2022-10-17 10:58:58,198 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-10-17 10:58:58,199 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16 == __copy_from_user_~size#1; [2022-10-17 10:58:59,806 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:58:59,848 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:58:59,848 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:58:59,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:59 BoogieIcfgContainer [2022-10-17 10:58:59,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:58:59,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:58:59,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:58:59,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:58:59,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:58:43" (1/3) ... [2022-10-17 10:58:59,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb95288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:59, skipping insertion in model container [2022-10-17 10:58:59,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:47" (2/3) ... [2022-10-17 10:58:59,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb95288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:59, skipping insertion in model container [2022-10-17 10:58:59,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:59" (3/3) ... [2022-10-17 10:58:59,867 INFO L112 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-10-17 10:58:59,889 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:58:59,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:59:00,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:59:00,064 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2122eef2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:59:00,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:59:00,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 2248 states, 1559 states have (on average 1.347658755612572) internal successors, (2101), 1605 states have internal predecessors, (2101), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) [2022-10-17 10:59:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:59:00,091 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:59:00,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:00,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:59:00,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1613910609, now seen corresponding path program 1 times [2022-10-17 10:59:00,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:00,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348995896] [2022-10-17 10:59:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:00,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:59:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:00,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:00,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348995896] [2022-10-17 10:59:00,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348995896] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:00,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:00,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:59:00,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435269078] [2022-10-17 10:59:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:00,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:59:00,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:59:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:59:00,827 INFO L87 Difference]: Start difference. First operand has 2248 states, 1559 states have (on average 1.347658755612572) internal successors, (2101), 1605 states have internal predecessors, (2101), 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) [2022-10-17 10:59:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:59:01,223 INFO L93 Difference]: Finished difference Result 4478 states and 6611 transitions. [2022-10-17 10:59:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:59:01,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-10-17 10:59:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:59:01,280 INFO L225 Difference]: With dead ends: 4478 [2022-10-17 10:59:01,280 INFO L226 Difference]: Without dead ends: 2237 [2022-10-17 10:59:01,306 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:59:01,312 INFO L413 NwaCegarLoop]: 3245 mSDtfsCounter, 3235 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3235 SdHoareTripleChecker+Valid, 3245 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 [2022-10-17 10:59:01,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3235 Valid, 3245 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:59:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2022-10-17 10:59:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2237. [2022-10-17 10:59:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 1551 states have (on average 1.3430045132172792) internal successors, (2083), 1594 states have internal predecessors, (2083), 578 states have call successors, (578), 108 states have call predecessors, (578), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-10-17 10:59:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3234 transitions. [2022-10-17 10:59:01,764 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3234 transitions. Word has length 16 [2022-10-17 10:59:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:59:01,766 INFO L495 AbstractCegarLoop]: Abstraction has 2237 states and 3234 transitions. [2022-10-17 10:59:01,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:59:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3234 transitions. [2022-10-17 10:59:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 10:59:01,769 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:59:01,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:01,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:59:01,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:59:01,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1507349808, now seen corresponding path program 1 times [2022-10-17 10:59:01,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:01,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74381858] [2022-10-17 10:59:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:01,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:02,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:59:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:02,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:02,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74381858] [2022-10-17 10:59:02,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74381858] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:02,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:02,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:59:02,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460223696] [2022-10-17 10:59:02,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:02,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:59:02,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:02,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:59:02,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:59:02,041 INFO L87 Difference]: Start difference. First operand 2237 states and 3234 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:59:02,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:59:02,257 INFO L93 Difference]: Finished difference Result 2239 states and 3235 transitions. [2022-10-17 10:59:02,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:59:02,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-10-17 10:59:02,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:59:02,285 INFO L225 Difference]: With dead ends: 2239 [2022-10-17 10:59:02,286 INFO L226 Difference]: Without dead ends: 2236 [2022-10-17 10:59:02,293 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:59:02,295 INFO L413 NwaCegarLoop]: 3231 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, 3231 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 [2022-10-17 10:59:02,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3220 Valid, 3231 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:59:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-10-17 10:59:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2236. [2022-10-17 10:59:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 1551 states have (on average 1.3423597678916828) internal successors, (2082), 1593 states have internal predecessors, (2082), 577 states have call successors, (577), 108 states have call predecessors, (577), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-10-17 10:59:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3232 transitions. [2022-10-17 10:59:02,520 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3232 transitions. Word has length 17 [2022-10-17 10:59:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:59:02,521 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 3232 transitions. [2022-10-17 10:59:02,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:59:02,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3232 transitions. [2022-10-17 10:59:02,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:59:02,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:59:02,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:02,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:59:02,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:59:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:02,525 INFO L85 PathProgramCache]: Analyzing trace with hash -517820206, now seen corresponding path program 1 times [2022-10-17 10:59:02,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:02,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529772760] [2022-10-17 10:59:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:02,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:02,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:59:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:02,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:02,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529772760] [2022-10-17 10:59:02,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529772760] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:02,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:02,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:59:02,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111707435] [2022-10-17 10:59:02,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:02,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:59:02,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:02,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:59:02,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:59:02,746 INFO L87 Difference]: Start difference. First operand 2236 states and 3232 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:59:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:59:03,054 INFO L93 Difference]: Finished difference Result 2238 states and 3233 transitions. [2022-10-17 10:59:03,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:59:03,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-10-17 10:59:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:59:03,078 INFO L225 Difference]: With dead ends: 2238 [2022-10-17 10:59:03,078 INFO L226 Difference]: Without dead ends: 2235 [2022-10-17 10:59:03,083 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:59:03,090 INFO L413 NwaCegarLoop]: 3229 mSDtfsCounter, 3217 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3217 SdHoareTripleChecker+Valid, 3229 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 [2022-10-17 10:59:03,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3217 Valid, 3229 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:59:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2022-10-17 10:59:03,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2235. [2022-10-17 10:59:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 1551 states have (on average 1.3417150225660863) internal successors, (2081), 1592 states have internal predecessors, (2081), 576 states have call successors, (576), 108 states have call predecessors, (576), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-10-17 10:59:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3230 transitions. [2022-10-17 10:59:03,364 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3230 transitions. Word has length 18 [2022-10-17 10:59:03,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:59:03,365 INFO L495 AbstractCegarLoop]: Abstraction has 2235 states and 3230 transitions. [2022-10-17 10:59:03,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:59:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3230 transitions. [2022-10-17 10:59:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 10:59:03,367 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:59:03,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:03,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:59:03,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:59:03,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1126423667, now seen corresponding path program 1 times [2022-10-17 10:59:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:03,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238882067] [2022-10-17 10:59:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:03,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:03,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:59:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:03,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:03,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:03,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238882067] [2022-10-17 10:59:03,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238882067] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:03,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:03,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:59:03,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205465798] [2022-10-17 10:59:03,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:03,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:59:03,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:03,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:59:03,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:59:03,575 INFO L87 Difference]: Start difference. First operand 2235 states and 3230 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:59:03,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:59:03,966 INFO L93 Difference]: Finished difference Result 5156 states and 7405 transitions. [2022-10-17 10:59:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:59:03,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-10-17 10:59:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:59:04,002 INFO L225 Difference]: With dead ends: 5156 [2022-10-17 10:59:04,002 INFO L226 Difference]: Without dead ends: 2927 [2022-10-17 10:59:04,020 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:59:04,021 INFO L413 NwaCegarLoop]: 3682 mSDtfsCounter, 1317 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 6488 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 [2022-10-17 10:59:04,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 6488 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:59:04,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2022-10-17 10:59:04,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2924. [2022-10-17 10:59:04,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2023 states have (on average 1.3232822540781017) internal successors, (2677), 2085 states have internal predecessors, (2677), 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) [2022-10-17 10:59:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 4129 transitions. [2022-10-17 10:59:04,332 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 4129 transitions. Word has length 19 [2022-10-17 10:59:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:59:04,333 INFO L495 AbstractCegarLoop]: Abstraction has 2924 states and 4129 transitions. [2022-10-17 10:59:04,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:59:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 4129 transitions. [2022-10-17 10:59:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-17 10:59:04,340 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:59:04,340 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:04,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:59:04,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:59:04,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1530383769, now seen corresponding path program 1 times [2022-10-17 10:59:04,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:04,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75055654] [2022-10-17 10:59:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:04,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:59:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:04,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:59:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 10:59:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:59:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:59:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:59:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:59:04,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:04,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75055654] [2022-10-17 10:59:04,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75055654] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:04,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:04,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:59:04,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490726062] [2022-10-17 10:59:04,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:04,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:59:04,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:04,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:59:04,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:59:04,683 INFO L87 Difference]: Start difference. First operand 2924 states and 4129 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) [2022-10-17 10:59:07,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []