./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/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_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 10:30:36,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:36,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:36,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:36,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:36,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:36,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:36,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:36,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:36,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:36,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:36,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:36,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:36,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:36,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:36,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:36,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:36,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:36,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:36,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:36,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:36,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:36,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:36,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:36,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:36,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:36,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:36,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:36,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:36,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:36,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:36,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:36,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:36,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:36,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:36,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:36,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:36,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:36,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:36,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:36,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:36,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:30:36,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:36,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:36,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:36,533 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:36,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:36,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:36,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:36,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:36,536 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:36,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:36,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:36,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:36,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:36,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:36,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:36,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:36,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:36,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:36,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:36,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:36,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:36,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:36,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:36,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:36,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:36,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:36,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:30:36,542 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:36,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:36,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:36,543 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_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-11-20 10:30:36,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:36,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:36,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:36,990 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:36,994 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:36,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-20 10:30:40,017 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:40,667 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:40,668 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-20 10:30:40,720 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/data/5d5393dc9/142250e37e9e4df78a2654bb7f325000/FLAG24c90fd3a [2022-11-20 10:30:40,739 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/data/5d5393dc9/142250e37e9e4df78a2654bb7f325000 [2022-11-20 10:30:40,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:40,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:40,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:40,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:40,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:40,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:40" (1/1) ... [2022-11-20 10:30:40,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333e875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:40, skipping insertion in model container [2022-11-20 10:30:40,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:40" (1/1) ... [2022-11-20 10:30:40,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:40,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:43,573 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-20 10:30:43,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:43,723 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:44,267 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-20 10:30:44,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:44,359 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:44,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44 WrapperNode [2022-11-20 10:30:44,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:44,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:44,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:44,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:44,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:44,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:44,652 INFO L138 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6646 [2022-11-20 10:30:44,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:44,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:44,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:44,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:44,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:44,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:44,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:44,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:44,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:45,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:45,042 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:45,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:45,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:45,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:45,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:45,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:45,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (1/1) ... [2022-11-20 10:30:45,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:45,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:45,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:45,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-11-20 10:30:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-11-20 10:30:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-11-20 10:30:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-11-20 10:30:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-11-20 10:30:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-11-20 10:30:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-11-20 10:30:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-11-20 10:30:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-20 10:30:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-20 10:30:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-11-20 10:30:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-11-20 10:30:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 10:30:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-11-20 10:30:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-11-20 10:30:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 10:30:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-20 10:30:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-20 10:30:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-11-20 10:30:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-11-20 10:30:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-11-20 10:30:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-11-20 10:30:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-11-20 10:30:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-11-20 10:30:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-20 10:30:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-20 10:30:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-20 10:30:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-20 10:30:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 10:30:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 10:30:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-11-20 10:30:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-11-20 10:30:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:30:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:30:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-11-20 10:30:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-11-20 10:30:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 10:30:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 10:30:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 10:30:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 10:30:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-20 10:30:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-20 10:30:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-20 10:30:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-11-20 10:30:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-11-20 10:30:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-11-20 10:30:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-11-20 10:30:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-11-20 10:30:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-11-20 10:30:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-11-20 10:30:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-11-20 10:30:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-11-20 10:30:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-11-20 10:30:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2022-11-20 10:30:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2022-11-20 10:30:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 10:30:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 10:30:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 10:30:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 10:30:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-20 10:30:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-20 10:30:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-11-20 10:30:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-11-20 10:30:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-11-20 10:30:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-11-20 10:30:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:30:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 10:30:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 10:30:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-11-20 10:30:45,312 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-11-20 10:30:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-11-20 10:30:45,312 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-11-20 10:30:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:30:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 10:30:45,313 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 10:30:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-11-20 10:30:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-11-20 10:30:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-11-20 10:30:45,319 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-11-20 10:30:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:30:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:30:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-11-20 10:30:45,319 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-11-20 10:30:45,320 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-11-20 10:30:45,330 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-11-20 10:30:45,330 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 10:30:45,331 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 10:30:45,331 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-11-20 10:30:45,331 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-11-20 10:30:45,331 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-11-20 10:30:45,331 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-11-20 10:30:45,331 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-20 10:30:45,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-20 10:30:45,332 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-20 10:30:45,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-20 10:30:45,332 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 10:30:45,332 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 10:30:45,332 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-20 10:30:45,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-20 10:30:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-20 10:30:45,333 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-20 10:30:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-11-20 10:30:45,333 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-11-20 10:30:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-11-20 10:30:45,334 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-11-20 10:30:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-11-20 10:30:45,334 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-11-20 10:30:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-20 10:30:45,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-20 10:30:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-20 10:30:45,335 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-20 10:30:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 10:30:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 10:30:45,335 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 10:30:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-11-20 10:30:45,335 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-11-20 10:30:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-20 10:30:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-20 10:30:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 10:30:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-11-20 10:30:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-11-20 10:30:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:30:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-11-20 10:30:45,337 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-11-20 10:30:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-11-20 10:30:45,337 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-11-20 10:30:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-11-20 10:30:45,338 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-11-20 10:30:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-20 10:30:45,338 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-20 10:30:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 10:30:45,338 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 10:30:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-20 10:30:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-11-20 10:30:45,339 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-11-20 10:30:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:30:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 10:30:45,339 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 10:30:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-11-20 10:30:45,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-11-20 10:30:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-20 10:30:45,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-20 10:30:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-11-20 10:30:45,340 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-11-20 10:30:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-11-20 10:30:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-11-20 10:30:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-11-20 10:30:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-11-20 10:30:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-11-20 10:30:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-11-20 10:30:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-11-20 10:30:45,342 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-11-20 10:30:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-20 10:30:45,342 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-20 10:30:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 10:30:45,342 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 10:30:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:30:45,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:30:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-11-20 10:30:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-11-20 10:30:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-20 10:30:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-20 10:30:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:30:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-11-20 10:30:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-11-20 10:30:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-20 10:30:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-20 10:30:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-11-20 10:30:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-11-20 10:30:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-11-20 10:30:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-11-20 10:30:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-11-20 10:30:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-11-20 10:30:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-11-20 10:30:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-11-20 10:30:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:30:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-20 10:30:45,346 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-20 10:30:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 10:30:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-20 10:30:45,346 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-20 10:30:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:30:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:30:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-11-20 10:30:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-11-20 10:30:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 10:30:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 10:30:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-20 10:30:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-20 10:30:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-11-20 10:30:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-11-20 10:30:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 10:30:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 10:30:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2022-11-20 10:30:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2022-11-20 10:30:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-20 10:30:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-20 10:30:45,361 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-11-20 10:30:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-11-20 10:30:45,361 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-20 10:30:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-20 10:30:45,361 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 10:30:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 10:30:45,362 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-11-20 10:30:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-11-20 10:30:45,362 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-11-20 10:30:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-11-20 10:30:45,362 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-20 10:30:45,363 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-20 10:30:45,363 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-11-20 10:30:45,363 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-11-20 10:30:45,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-11-20 10:30:45,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-11-20 10:30:45,363 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 10:30:45,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 10:30:45,364 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-11-20 10:30:45,364 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-11-20 10:30:45,364 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-20 10:30:45,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-20 10:30:45,364 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 10:30:45,364 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 10:30:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-11-20 10:30:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-11-20 10:30:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:30:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-11-20 10:30:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-11-20 10:30:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-11-20 10:30:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-11-20 10:30:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-20 10:30:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-20 10:30:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 10:30:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 10:30:46,352 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:46,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:51,536 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-11-20 10:30:51,536 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: assume -9223372036854775808 <= __copy_to_user_#t~ret139#1 && __copy_to_user_#t~ret139#1 <= 9223372036854775807;__copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2022-11-20 10:30:51,536 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-11-20 10:30:51,536 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: assume -9223372036854775808 <= __copy_to_user_#t~ret138#1 && __copy_to_user_#t~ret138#1 <= 9223372036854775807;__copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2022-11-20 10:30:51,536 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-11-20 10:30:51,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-11-20 10:30:51,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:30:51,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:30:51,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-11-20 10:30:51,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-11-20 10:30:51,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-11-20 10:30:51,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:30:51,538 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:30:51,538 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-11-20 10:30:51,538 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16 == __copy_to_user_~size#1; [2022-11-20 10:30:51,538 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:30:51,538 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10 == __copy_to_user_~size#1; [2022-11-20 10:30:51,538 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2022-11-20 10:30:51,538 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:30:51,538 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8 == __copy_to_user_~size#1; [2022-11-20 10:30:51,539 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := (if __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 else __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-11-20 10:30:51,539 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:30:51,539 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4 == __copy_to_user_~size#1; [2022-11-20 10:30:51,539 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:30:51,539 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2 == __copy_to_user_~size#1; [2022-11-20 10:30:54,573 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2022-11-20 10:30:54,573 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: assume -9223372036854775808 <= __copy_from_user_#t~ret133#1 && __copy_from_user_#t~ret133#1 <= 9223372036854775807;__copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2022-11-20 10:30:54,573 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:30:54,573 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:30:54,573 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-11-20 10:30:54,573 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-11-20 10:30:54,574 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-11-20 10:30:54,574 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2022-11-20 10:30:54,574 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: assume -9223372036854775808 <= __copy_from_user_#t~ret134#1 && __copy_from_user_#t~ret134#1 <= 9223372036854775807;__copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2022-11-20 10:30:54,574 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:30:54,574 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:30:54,574 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:30:54,574 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4 == __copy_from_user_~size#1; [2022-11-20 10:30:54,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:30:54,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8 == __copy_from_user_~size#1; [2022-11-20 10:30:54,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2 == __copy_from_user_~size#1; [2022-11-20 10:30:54,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:30:54,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-11-20 10:30:54,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-11-20 10:30:54,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-11-20 10:30:54,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2022-11-20 10:30:54,576 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:30:54,576 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10 == __copy_from_user_~size#1; [2022-11-20 10:30:54,576 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-11-20 10:30:54,576 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16 == __copy_from_user_~size#1; [2022-11-20 10:30:55,917 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:55,970 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:55,971 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:30:55,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:55 BoogieIcfgContainer [2022-11-20 10:30:55,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:55,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:30:55,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:30:55,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:30:55,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:40" (1/3) ... [2022-11-20 10:30:55,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19838d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:55, skipping insertion in model container [2022-11-20 10:30:55,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:44" (2/3) ... [2022-11-20 10:30:55,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19838d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:55, skipping insertion in model container [2022-11-20 10:30:55,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:55" (3/3) ... [2022-11-20 10:30:55,989 INFO L112 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-20 10:30:56,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:30:56,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:30:56,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:56,114 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;@10668e2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:56,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:30:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 2227 states, 1538 states have (on average 1.3439531859557867) internal successors, (2067), 1584 states have internal predecessors, (2067), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) [2022-11-20 10:30:56,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:30:56,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:56,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:56,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:56,142 INFO L85 PathProgramCache]: Analyzing trace with hash 221283847, now seen corresponding path program 1 times [2022-11-20 10:30:56,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:56,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36298551] [2022-11-20 10:30:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:56,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:30:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:56,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:56,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36298551] [2022-11-20 10:30:56,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36298551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:56,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:56,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:56,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107237151] [2022-11-20 10:30:56,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:56,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:56,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:56,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:56,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:56,699 INFO L87 Difference]: Start difference. First operand has 2227 states, 1538 states have (on average 1.3439531859557867) internal successors, (2067), 1584 states have internal predecessors, (2067), 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) [2022-11-20 10:30:57,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:57,226 INFO L93 Difference]: Finished difference Result 4437 states and 6522 transitions. [2022-11-20 10:30:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:57,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-20 10:30:57,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:57,274 INFO L225 Difference]: With dead ends: 4437 [2022-11-20 10:30:57,274 INFO L226 Difference]: Without dead ends: 2216 [2022-11-20 10:30:57,299 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 [2022-11-20 10:30:57,304 INFO L413 NwaCegarLoop]: 3213 mSDtfsCounter, 3203 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3203 SdHoareTripleChecker+Valid, 3213 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 [2022-11-20 10:30:57,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3203 Valid, 3213 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:30:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2022-11-20 10:30:57,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2216. [2022-11-20 10:30:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1530 states have (on average 1.3405228758169934) internal successors, (2051), 1573 states have internal predecessors, (2051), 578 states have call successors, (578), 108 states have call predecessors, (578), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-11-20 10:30:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3202 transitions. [2022-11-20 10:30:57,645 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3202 transitions. Word has length 16 [2022-11-20 10:30:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:57,647 INFO L495 AbstractCegarLoop]: Abstraction has 2216 states and 3202 transitions. [2022-11-20 10:30:57,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3202 transitions. [2022-11-20 10:30:57,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:30:57,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:57,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:57,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:30:57,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:57,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1731165812, now seen corresponding path program 1 times [2022-11-20 10:30:57,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:57,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307455922] [2022-11-20 10:30:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:57,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:30:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:57,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307455922] [2022-11-20 10:30:57,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307455922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:57,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:57,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:57,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112402979] [2022-11-20 10:30:57,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:57,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:57,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:57,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:57,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:57,871 INFO L87 Difference]: Start difference. First operand 2216 states and 3202 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:58,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:58,041 INFO L93 Difference]: Finished difference Result 2218 states and 3203 transitions. [2022-11-20 10:30:58,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:58,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-20 10:30:58,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:58,064 INFO L225 Difference]: With dead ends: 2218 [2022-11-20 10:30:58,065 INFO L226 Difference]: Without dead ends: 2215 [2022-11-20 10:30:58,072 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 [2022-11-20 10:30:58,075 INFO L413 NwaCegarLoop]: 3199 mSDtfsCounter, 3188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 3199 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 [2022-11-20 10:30:58,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3188 Valid, 3199 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:30:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2022-11-20 10:30:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2215. [2022-11-20 10:30:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 1530 states have (on average 1.3398692810457515) internal successors, (2050), 1572 states have internal predecessors, (2050), 577 states have call successors, (577), 108 states have call predecessors, (577), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-11-20 10:30:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3200 transitions. [2022-11-20 10:30:58,287 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3200 transitions. Word has length 17 [2022-11-20 10:30:58,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:58,287 INFO L495 AbstractCegarLoop]: Abstraction has 2215 states and 3200 transitions. [2022-11-20 10:30:58,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3200 transitions. [2022-11-20 10:30:58,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:30:58,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:58,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:58,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:30:58,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:58,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:58,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2127558230, now seen corresponding path program 1 times [2022-11-20 10:30:58,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:58,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72155815] [2022-11-20 10:30:58,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:58,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:30:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:58,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:58,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72155815] [2022-11-20 10:30:58,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72155815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:58,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:58,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135311972] [2022-11-20 10:30:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:58,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:58,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:58,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:58,464 INFO L87 Difference]: Start difference. First operand 2215 states and 3200 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:58,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:58,606 INFO L93 Difference]: Finished difference Result 2217 states and 3201 transitions. [2022-11-20 10:30:58,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:58,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-20 10:30:58,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:58,619 INFO L225 Difference]: With dead ends: 2217 [2022-11-20 10:30:58,619 INFO L226 Difference]: Without dead ends: 2214 [2022-11-20 10:30:58,622 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 [2022-11-20 10:30:58,622 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 3185 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3185 SdHoareTripleChecker+Valid, 3197 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 [2022-11-20 10:30:58,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3185 Valid, 3197 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:30:58,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2022-11-20 10:30:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2214. [2022-11-20 10:30:58,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 1530 states have (on average 1.3392156862745097) internal successors, (2049), 1571 states have internal predecessors, (2049), 576 states have call successors, (576), 108 states have call predecessors, (576), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-11-20 10:30:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3198 transitions. [2022-11-20 10:30:58,787 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3198 transitions. Word has length 18 [2022-11-20 10:30:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:58,787 INFO L495 AbstractCegarLoop]: Abstraction has 2214 states and 3198 transitions. [2022-11-20 10:30:58,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3198 transitions. [2022-11-20 10:30:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:30:58,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:58,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:58,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:30:58,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:58,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:58,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1530816433, now seen corresponding path program 1 times [2022-11-20 10:30:58,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:58,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172053705] [2022-11-20 10:30:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:30:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:58,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:58,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172053705] [2022-11-20 10:30:58,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172053705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:58,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:58,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:58,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046199615] [2022-11-20 10:30:58,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:58,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:58,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:58,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:58,953 INFO L87 Difference]: Start difference. First operand 2214 states and 3198 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:59,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:59,264 INFO L93 Difference]: Finished difference Result 5113 states and 7342 transitions. [2022-11-20 10:30:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:59,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-20 10:30:59,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:59,290 INFO L225 Difference]: With dead ends: 5113 [2022-11-20 10:30:59,290 INFO L226 Difference]: Without dead ends: 2904 [2022-11-20 10:30:59,304 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 [2022-11-20 10:30:59,315 INFO L413 NwaCegarLoop]: 3648 mSDtfsCounter, 1309 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 6428 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 [2022-11-20 10:30:59,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 6428 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:30:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2022-11-20 10:30:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2901. [2022-11-20 10:30:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2000 states have (on average 1.3215) internal successors, (2643), 2062 states have internal predecessors, (2643), 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) [2022-11-20 10:30:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 4095 transitions. [2022-11-20 10:30:59,545 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 4095 transitions. Word has length 19 [2022-11-20 10:30:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:59,545 INFO L495 AbstractCegarLoop]: Abstraction has 2901 states and 4095 transitions. [2022-11-20 10:30:59,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 4095 transitions. [2022-11-20 10:30:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:30:59,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:59,549 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] [2022-11-20 10:30:59,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:30:59,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:59,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:59,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1271718831, now seen corresponding path program 1 times [2022-11-20 10:30:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:59,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387897075] [2022-11-20 10:30:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:59,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:59,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:30:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:59,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 10:30:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:59,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 10:30:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:30:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:59,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 10:30:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:59,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:30:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:30:59,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:59,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387897075] [2022-11-20 10:30:59,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387897075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:59,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:59,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115277251] [2022-11-20 10:30:59,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:59,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:30:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:30:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:30:59,836 INFO L87 Difference]: Start difference. First operand 2901 states and 4095 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) [2022-11-20 10:31:02,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:31:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:15,477 INFO L93 Difference]: Finished difference Result 6331 states and 9003 transitions. [2022-11-20 10:31:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:31:15,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-11-20 10:31:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:15,499 INFO L225 Difference]: With dead ends: 6331 [2022-11-20 10:31:15,499 INFO L226 Difference]: Without dead ends: 3444 [2022-11-20 10:31:15,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:31:15,511 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 2406 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 5490 mSolverCounterSat, 1443 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2706 SdHoareTripleChecker+Valid, 4345 SdHoareTripleChecker+Invalid, 6934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1443 IncrementalHoareTripleChecker+Valid, 5490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:15,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2706 Valid, 4345 Invalid, 6934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1443 Valid, 5490 Invalid, 1 Unknown, 0 Unchecked, 15.0s Time] [2022-11-20 10:31:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2022-11-20 10:31:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 2956. [2022-11-20 10:31:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2039 states have (on average 1.3187837175085826) internal successors, (2689), 2103 states have internal predecessors, (2689), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2022-11-20 10:31:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 4165 transitions. [2022-11-20 10:31:15,797 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 4165 transitions. Word has length 56 [2022-11-20 10:31:15,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:15,797 INFO L495 AbstractCegarLoop]: Abstraction has 2956 states and 4165 transitions. [2022-11-20 10:31:15,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 10:31:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 4165 transitions. [2022-11-20 10:31:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 10:31:15,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:15,806 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:15,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:31:15,806 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:15,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:15,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1190639698, now seen corresponding path program 1 times [2022-11-20 10:31:15,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445824348] [2022-11-20 10:31:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:31:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:16,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 10:31:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:16,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:31:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 10:31:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:31:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:31:16,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:16,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445824348] [2022-11-20 10:31:16,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445824348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:16,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:16,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:31:16,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464034662] [2022-11-20 10:31:16,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:16,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:31:16,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:31:16,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:31:16,053 INFO L87 Difference]: Start difference. First operand 2956 states and 4165 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:31:18,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:31:24,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:24,029 INFO L93 Difference]: Finished difference Result 5998 states and 8556 transitions. [2022-11-20 10:31:24,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:31:24,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2022-11-20 10:31:24,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:24,047 INFO L225 Difference]: With dead ends: 5998 [2022-11-20 10:31:24,047 INFO L226 Difference]: Without dead ends: 3056 [2022-11-20 10:31:24,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:31:24,061 INFO L413 NwaCegarLoop]: 1750 mSDtfsCounter, 1393 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 412 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 3920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:24,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 4218 Invalid, 3920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3507 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-20 10:31:24,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2022-11-20 10:31:24,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2956. [2022-11-20 10:31:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2039 states have (on average 1.3158410985777342) internal successors, (2683), 2103 states have internal predecessors, (2683), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2022-11-20 10:31:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 4159 transitions. [2022-11-20 10:31:24,258 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 4159 transitions. Word has length 60 [2022-11-20 10:31:24,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:24,259 INFO L495 AbstractCegarLoop]: Abstraction has 2956 states and 4159 transitions. [2022-11-20 10:31:24,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:31:24,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 4159 transitions. [2022-11-20 10:31:24,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 10:31:24,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:24,262 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:24,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:31:24,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:24,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:24,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1588758905, now seen corresponding path program 1 times [2022-11-20 10:31:24,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:24,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586492185] [2022-11-20 10:31:24,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:24,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:31:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 10:31:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:24,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:31:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 10:31:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:24,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:31:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:31:24,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:24,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586492185] [2022-11-20 10:31:24,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586492185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:24,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:24,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:31:24,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162701744] [2022-11-20 10:31:24,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:24,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:31:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:24,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:31:24,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:31:24,545 INFO L87 Difference]: Start difference. First operand 2956 states and 4159 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 10:31:27,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:31:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:32,260 INFO L93 Difference]: Finished difference Result 5032 states and 7025 transitions. [2022-11-20 10:31:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:31:32,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-11-20 10:31:32,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:32,275 INFO L225 Difference]: With dead ends: 5032 [2022-11-20 10:31:32,275 INFO L226 Difference]: Without dead ends: 2508 [2022-11-20 10:31:32,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:31:32,286 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 2912 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 2958 mSolverCounterSat, 1118 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3175 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 4077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 2958 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:32,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3175 Valid, 2138 Invalid, 4077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 2958 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-20 10:31:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2022-11-20 10:31:32,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2389. [2022-11-20 10:31:32,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 1654 states have (on average 1.3047158403869408) internal successors, (2158), 1700 states have internal predecessors, (2158), 569 states have call successors, (569), 170 states have call predecessors, (569), 165 states have return successors, (554), 547 states have call predecessors, (554), 554 states have call successors, (554) [2022-11-20 10:31:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3281 transitions. [2022-11-20 10:31:32,511 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3281 transitions. Word has length 63 [2022-11-20 10:31:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:32,512 INFO L495 AbstractCegarLoop]: Abstraction has 2389 states and 3281 transitions. [2022-11-20 10:31:32,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 10:31:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3281 transitions. [2022-11-20 10:31:32,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 10:31:32,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:32,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:32,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:31:32,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:32,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:32,518 INFO L85 PathProgramCache]: Analyzing trace with hash 580175712, now seen corresponding path program 1 times [2022-11-20 10:31:32,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:32,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594252302] [2022-11-20 10:31:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:32,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:31:32,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:31:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:31:32,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:31:32,892 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:31:32,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 10:31:32,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:31:32,898 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:32,902 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:31:33,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:31:33 BoogieIcfgContainer [2022-11-20 10:31:33,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:31:33,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:31:33,008 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:31:33,008 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:31:33,009 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:55" (3/4) ... [2022-11-20 10:31:33,012 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:31:33,012 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:31:33,013 INFO L158 Benchmark]: Toolchain (without parser) took 52266.93ms. Allocated memory was 182.5MB in the beginning and 595.6MB in the end (delta: 413.1MB). Free memory was 142.1MB in the beginning and 337.0MB in the end (delta: -195.0MB). Peak memory consumption was 218.1MB. Max. memory is 16.1GB. [2022-11-20 10:31:33,013 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 134.2MB. Free memory was 108.9MB in the beginning and 108.8MB in the end (delta: 95.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:31:33,014 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3608.80ms. Allocated memory was 182.5MB in the beginning and 239.1MB in the end (delta: 56.6MB). Free memory was 142.1MB in the beginning and 137.7MB in the end (delta: 4.4MB). Peak memory consumption was 100.8MB. Max. memory is 16.1GB. [2022-11-20 10:31:33,014 INFO L158 Benchmark]: Boogie Procedure Inliner took 292.53ms. Allocated memory is still 239.1MB. Free memory was 137.7MB in the beginning and 102.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-20 10:31:33,015 INFO L158 Benchmark]: Boogie Preprocessor took 467.93ms. Allocated memory is still 239.1MB. Free memory was 102.0MB in the beginning and 124.0MB in the end (delta: -22.0MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2022-11-20 10:31:33,015 INFO L158 Benchmark]: RCFGBuilder took 10852.74ms. Allocated memory was 239.1MB in the beginning and 377.5MB in the end (delta: 138.4MB). Free memory was 124.0MB in the beginning and 185.1MB in the end (delta: -61.0MB). Peak memory consumption was 163.6MB. Max. memory is 16.1GB. [2022-11-20 10:31:33,015 INFO L158 Benchmark]: TraceAbstraction took 37027.93ms. Allocated memory was 377.5MB in the beginning and 595.6MB in the end (delta: 218.1MB). Free memory was 184.0MB in the beginning and 337.0MB in the end (delta: -153.0MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. [2022-11-20 10:31:33,016 INFO L158 Benchmark]: Witness Printer took 4.81ms. Allocated memory is still 595.6MB. Free memory is still 337.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:31:33,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 134.2MB. Free memory was 108.9MB in the beginning and 108.8MB in the end (delta: 95.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3608.80ms. Allocated memory was 182.5MB in the beginning and 239.1MB in the end (delta: 56.6MB). Free memory was 142.1MB in the beginning and 137.7MB in the end (delta: 4.4MB). Peak memory consumption was 100.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 292.53ms. Allocated memory is still 239.1MB. Free memory was 137.7MB in the beginning and 102.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 467.93ms. Allocated memory is still 239.1MB. Free memory was 102.0MB in the beginning and 124.0MB in the end (delta: -22.0MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * RCFGBuilder took 10852.74ms. Allocated memory was 239.1MB in the beginning and 377.5MB in the end (delta: 138.4MB). Free memory was 124.0MB in the beginning and 185.1MB in the end (delta: -61.0MB). Peak memory consumption was 163.6MB. Max. memory is 16.1GB. * TraceAbstraction took 37027.93ms. Allocated memory was 377.5MB in the beginning and 595.6MB in the end (delta: 218.1MB). Free memory was 184.0MB in the beginning and 337.0MB in the end (delta: -153.0MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. * Witness Printer took 4.81ms. Allocated memory is still 595.6MB. Free memory is still 337.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 10595. Possible FailurePath: [L5971] static unsigned int vhost_zcopy_mask ; [L9348] static int experimental_zcopytx ; [L10590-L10593] static struct file_operations const vhost_net_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_net_ioctl, & vhost_net_compat_ioctl, 0, & vhost_net_open, 0, & vhost_net_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L10620] int LDV_IN_INTERRUPT ; [L11002] static int ldv_mutex_cred_guard_mutex ; [L11109] static int ldv_mutex_lock ; [L11216] static int ldv_mutex_mtx ; [L11323] static int ldv_mutex_mutex ; VAL [__this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=0, ldv_mutex_cred_guard_mutex=0, ldv_mutex_lock=0, ldv_mutex_mtx=0, ldv_mutex_mutex=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10623] struct inode *var_group1 ; [L10624] struct file *var_group2 ; [L10625] unsigned int var_vhost_net_ioctl_27_p1 ; [L10626] unsigned long var_vhost_net_ioctl_27_p2 ; [L10627] unsigned int var_vhost_net_compat_ioctl_28_p1 ; [L10628] unsigned long var_vhost_net_compat_ioctl_28_p2 ; [L10629] int res_vhost_net_open_13 ; [L10630] int ldv_s_vhost_net_fops_file_operations ; [L10631] int tmp ; [L10632] int tmp___0 ; [L10633] int tmp___1 ; [L10635] ldv_s_vhost_net_fops_file_operations = 0 [L10636] LDV_IN_INTERRUPT = 1 [L10637] CALL ldv_initialize() [L11433] ldv_mutex_cred_guard_mutex = 1 [L11434] ldv_mutex_lock = 1 [L11435] ldv_mutex_mtx = 1 [L11436] ldv_mutex_mutex = 1 VAL [__this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; VAL [__this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10604] CALL, EXPR misc_register(& vhost_net_misc) [L11595] return __VERIFIER_nondet_int(); [L10604] RET, EXPR misc_register(& vhost_net_misc) [L10604] tmp = misc_register(& vhost_net_misc) [L10605] return (tmp); VAL [\result=0, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10682] tmp___1 = __VERIFIER_nondet_int() [L10683] COND TRUE tmp___1 != 0 || ldv_s_vhost_net_fops_file_operations != 0 VAL [__this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: [L10673] case 3: VAL [__this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10675] CALL vhost_net_compat_ioctl(var_group2, var_vhost_net_compat_ioctl_28_p1, var_vhost_net_compat_ioctl_28_p2) [L10582] void *tmp ; [L10583] long tmp___0 ; [L10585] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L9300] return ((void *)((unsigned long )uptr)); VAL [\old(uptr)=4294967295, \result={0:4294967295}, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, uptr=4294967295, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10585] RET, EXPR compat_ptr((compat_uptr_t )arg) [L10585] tmp = compat_ptr((compat_uptr_t )arg) [L10586] CALL vhost_net_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={8589934593:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={8589934593:-17400}, lock={8589934593:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={8589934593:-17400}, lock={8589934593:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, experimental_zcopytx=0, ldv_func_arg1={8589934593:-17400}, ldv_func_arg1={8589934593:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, experimental_zcopytx=0, ldv_func_arg1={8589934593:-17400}, ldv_func_arg1={8589934593:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, dev={8589934593:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, dev={8589934593:-17416}, dev={8589934593:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5283] struct task_struct *pfo_ret__ ; [L5286] case 1UL: [L5289] case 2UL: [L5292] case 4UL: [L5295] case 8UL: VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(ldv_mutex_mutex)=1, \result={8589934592:-3}, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, pfo_ret__={8589934592:-3}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, dev={8589934593:-17416}, dev={8589934593:-17416}, experimental_zcopytx=0, get_current()={8589934592:-3}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934593:-17416}, n={8589934593:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934595:8589934597}, err=0, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934593:-17416}, n={8589934593:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934593:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934593:-17416}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={8589934593:0}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={8589934593:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={8589934593:8}, lock={8589934593:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934595:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 109 procedures, 2227 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.8s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 32.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 18418 SdHoareTripleChecker+Valid, 30.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17596 mSDsluCounter, 26738 SdHoareTripleChecker+Invalid, 27.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8969 mSDsCounter, 2977 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11968 IncrementalHoareTripleChecker+Invalid, 14948 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2977 mSolverCounterUnsat, 17769 mSDtfsCounter, 11968 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2956occurred in iteration=5, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 710 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 315 NumberOfCodeBlocks, 315 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 242 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 10:31:33,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/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_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 10:31:35,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:31:35,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:31:35,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:31:35,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:31:35,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:31:35,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:31:35,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:31:35,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:31:35,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:31:35,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:31:35,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:31:35,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:31:35,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:31:35,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:31:35,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:31:35,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:31:35,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:31:35,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:31:35,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:31:35,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:31:35,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:31:35,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:31:35,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:31:35,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:31:35,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:31:35,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:31:35,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:31:35,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:31:35,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:31:35,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:31:35,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:31:35,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:31:35,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:31:35,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:31:35,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:31:35,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:31:35,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:31:35,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:31:35,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:31:35,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:31:35,563 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 10:31:35,602 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:31:35,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:31:35,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:31:35,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:31:35,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:31:35,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:31:35,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:31:35,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:31:35,606 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:31:35,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:31:35,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:31:35,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:31:35,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:31:35,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:31:35,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:31:35,609 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:31:35,609 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:31:35,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:31:35,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:31:35,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:31:35,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:31:35,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:31:35,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:31:35,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:31:35,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:31:35,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:31:35,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:31:35,611 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:31:35,612 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:31:35,612 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:31:35,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:31:35,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:31:35,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:31:35,613 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-11-20 10:31:35,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:31:35,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:31:35,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:31:35,986 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:31:35,986 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:31:35,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-20 10:31:38,979 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:31:39,648 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:31:39,653 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-20 10:31:39,725 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/data/1dbab8538/7782c9c32cb64f4184fe7c1866ac7c86/FLAG812a866f8 [2022-11-20 10:31:39,739 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/data/1dbab8538/7782c9c32cb64f4184fe7c1866ac7c86 [2022-11-20 10:31:39,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:31:39,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:31:39,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:31:39,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:31:39,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:31:39,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:31:39" (1/1) ... [2022-11-20 10:31:39,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ac52a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:39, skipping insertion in model container [2022-11-20 10:31:39,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:31:39" (1/1) ... [2022-11-20 10:31:39,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:31:40,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:31:42,914 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-20 10:31:43,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:31:43,051 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:31:43,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:31:43,598 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-20 10:31:43,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:31:43,656 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:31:44,174 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-20 10:31:44,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:31:44,296 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:31:44,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44 WrapperNode [2022-11-20 10:31:44,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:31:44,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:31:44,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:31:44,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:31:44,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:44,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:44,642 INFO L138 Inliner]: procedures = 350, calls = 2627, calls flagged for inlining = 143, calls inlined = 135, statements flattened = 6427 [2022-11-20 10:31:44,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:31:44,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:31:44,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:31:44,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:31:44,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:44,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:44,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:44,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:44,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:44,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:44,971 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:44,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:45,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:31:45,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:31:45,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:31:45,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:31:45,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (1/1) ... [2022-11-20 10:31:45,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:31:45,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:45,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:31:45,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:31:45,149 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-11-20 10:31:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-11-20 10:31:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-11-20 10:31:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-11-20 10:31:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-11-20 10:31:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-11-20 10:31:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 10:31:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-11-20 10:31:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-11-20 10:31:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-20 10:31:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-20 10:31:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 10:31:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:31:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-11-20 10:31:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-11-20 10:31:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 10:31:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 10:31:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-11-20 10:31:45,154 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-11-20 10:31:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 10:31:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-20 10:31:45,155 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-20 10:31:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-11-20 10:31:45,156 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-11-20 10:31:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-11-20 10:31:45,156 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-11-20 10:31:45,157 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-11-20 10:31:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-11-20 10:31:45,158 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-20 10:31:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-20 10:31:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-20 10:31:45,159 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-20 10:31:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 10:31:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 10:31:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-11-20 10:31:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-11-20 10:31:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:31:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:31:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-11-20 10:31:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-11-20 10:31:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 10:31:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 10:31:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 10:31:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 10:31:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-20 10:31:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-20 10:31:45,163 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-20 10:31:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-11-20 10:31:45,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-11-20 10:31:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-11-20 10:31:45,164 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-11-20 10:31:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-11-20 10:31:45,164 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-11-20 10:31:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-11-20 10:31:45,165 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-11-20 10:31:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-11-20 10:31:45,165 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-11-20 10:31:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 10:31:45,166 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 10:31:45,166 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 10:31:45,166 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 10:31:45,166 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-20 10:31:45,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-20 10:31:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-11-20 10:31:45,167 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-11-20 10:31:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-11-20 10:31:45,167 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-11-20 10:31:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:31:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 10:31:45,168 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 10:31:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-11-20 10:31:45,168 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-11-20 10:31:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-11-20 10:31:45,169 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-11-20 10:31:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:31:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 10:31:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 10:31:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-11-20 10:31:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-11-20 10:31:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-11-20 10:31:45,171 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-11-20 10:31:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 10:31:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 10:31:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 10:31:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:31:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 10:31:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:31:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-11-20 10:31:45,173 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-11-20 10:31:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-11-20 10:31:45,174 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-11-20 10:31:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 10:31:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 10:31:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 10:31:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-11-20 10:31:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-11-20 10:31:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:31:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 10:31:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-11-20 10:31:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-11-20 10:31:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-20 10:31:45,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-20 10:31:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 10:31:45,178 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 10:31:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-20 10:31:45,178 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-20 10:31:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-20 10:31:45,179 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-20 10:31:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-11-20 10:31:45,179 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-11-20 10:31:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-11-20 10:31:45,181 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-11-20 10:31:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-11-20 10:31:45,184 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-11-20 10:31:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-20 10:31:45,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-20 10:31:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-20 10:31:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-20 10:31:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 10:31:45,188 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 10:31:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-11-20 10:31:45,194 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-11-20 10:31:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-20 10:31:45,194 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-20 10:31:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-11-20 10:31:45,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-11-20 10:31:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-11-20 10:31:45,195 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-11-20 10:31:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-11-20 10:31:45,196 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-11-20 10:31:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-11-20 10:31:45,196 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-11-20 10:31:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-20 10:31:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-20 10:31:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 10:31:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 10:31:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-20 10:31:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-11-20 10:31:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-11-20 10:31:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 10:31:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 10:31:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-11-20 10:31:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-11-20 10:31:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-20 10:31:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-20 10:31:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-11-20 10:31:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-11-20 10:31:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-11-20 10:31:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-11-20 10:31:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-11-20 10:31:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-11-20 10:31:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-11-20 10:31:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-11-20 10:31:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 10:31:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 10:31:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 10:31:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 10:31:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-11-20 10:31:45,202 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-11-20 10:31:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-20 10:31:45,202 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-20 10:31:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 10:31:45,202 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 10:31:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:31:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:31:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-11-20 10:31:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-11-20 10:31:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-20 10:31:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-20 10:31:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:31:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-11-20 10:31:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-11-20 10:31:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-20 10:31:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-20 10:31:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-11-20 10:31:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-11-20 10:31:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:31:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-11-20 10:31:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-11-20 10:31:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-11-20 10:31:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-11-20 10:31:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-11-20 10:31:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-11-20 10:31:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:31:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-20 10:31:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-20 10:31:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 10:31:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 10:31:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 10:31:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-20 10:31:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-20 10:31:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:31:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:31:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 10:31:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-11-20 10:31:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-11-20 10:31:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 10:31:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 10:31:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-20 10:31:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-20 10:31:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-11-20 10:31:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-11-20 10:31:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 10:31:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 10:31:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-20 10:31:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-20 10:31:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-11-20 10:31:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-11-20 10:31:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-20 10:31:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-20 10:31:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 10:31:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 10:31:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-11-20 10:31:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-11-20 10:31:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-11-20 10:31:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-11-20 10:31:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-20 10:31:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-20 10:31:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-11-20 10:31:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-11-20 10:31:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-11-20 10:31:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-11-20 10:31:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-11-20 10:31:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-11-20 10:31:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-20 10:31:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-20 10:31:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 10:31:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 10:31:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-11-20 10:31:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-11-20 10:31:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 10:31:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-11-20 10:31:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-11-20 10:31:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-11-20 10:31:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-11-20 10:31:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-20 10:31:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-20 10:31:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:31:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:31:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 10:31:45,220 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 10:31:46,224 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:31:46,228 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:32:11,545 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2022-11-20 10:32:11,545 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: __copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2022-11-20 10:32:11,545 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2022-11-20 10:32:11,545 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: __copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2022-11-20 10:32:11,545 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-11-20 10:32:11,546 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-11-20 10:32:11,546 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0bv64 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:32:11,546 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0bv64 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:32:11,546 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-11-20 10:32:11,546 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-11-20 10:32:11,546 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-11-20 10:32:11,549 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0bv64 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:32:11,549 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0bv64 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:32:11,549 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-11-20 10:32:11,549 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16bv32 == __copy_to_user_~size#1; [2022-11-20 10:32:11,549 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:32:11,549 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10bv32 == __copy_to_user_~size#1; [2022-11-20 10:32:11,549 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2022-11-20 10:32:11,550 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:32:11,550 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8bv32 == __copy_to_user_~size#1; [2022-11-20 10:32:11,550 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := __copy_to_user_~tmp___2~4#1[32:0]; [2022-11-20 10:32:11,550 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:32:11,550 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4bv32 == __copy_to_user_~size#1; [2022-11-20 10:32:11,550 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-11-20 10:32:11,550 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2bv32 == __copy_to_user_~size#1; [2022-11-20 10:32:28,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2022-11-20 10:32:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: __copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2022-11-20 10:32:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0bv64 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:32:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0bv64 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:32:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-11-20 10:32:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-11-20 10:32:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-11-20 10:32:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2022-11-20 10:32:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: __copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2022-11-20 10:32:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0bv64 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:32:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0bv64 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:32:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:32:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4bv32 == __copy_from_user_~size#1; [2022-11-20 10:32:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:32:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8bv32 == __copy_from_user_~size#1; [2022-11-20 10:32:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2bv32 == __copy_from_user_~size#1; [2022-11-20 10:32:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:32:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-11-20 10:32:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-11-20 10:32:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := __copy_from_user_~tmp___2~3#1[32:0]; [2022-11-20 10:32:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2022-11-20 10:32:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-11-20 10:32:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10bv32 == __copy_from_user_~size#1; [2022-11-20 10:32:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-11-20 10:32:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16bv32 == __copy_from_user_~size#1; [2022-11-20 10:32:37,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:32:37,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:32:37,580 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:32:37,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:37 BoogieIcfgContainer [2022-11-20 10:32:37,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:32:37,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:32:37,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:32:37,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:32:37,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:31:39" (1/3) ... [2022-11-20 10:32:37,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63458870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:32:37, skipping insertion in model container [2022-11-20 10:32:37,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:31:44" (2/3) ... [2022-11-20 10:32:37,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63458870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:32:37, skipping insertion in model container [2022-11-20 10:32:37,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:37" (3/3) ... [2022-11-20 10:32:37,594 INFO L112 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-20 10:32:37,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:32:37,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:32:37,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:32:37,709 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;@17e702eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:32:37,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:32:37,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 2200 states, 1522 states have (on average 1.3442838370565047) internal successors, (2046), 1568 states have internal predecessors, (2046), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) [2022-11-20 10:32:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:32:37,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:37,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:37,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:37,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1066115318, now seen corresponding path program 1 times [2022-11-20 10:32:37,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:37,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099027874] [2022-11-20 10:32:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:37,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:37,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:37,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:37,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 10:32:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:38,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:38,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:38,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:38,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:38,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099027874] [2022-11-20 10:32:38,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099027874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:38,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:38,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:38,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542606830] [2022-11-20 10:32:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:38,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:38,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:38,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:38,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:38,796 INFO L87 Difference]: Start difference. First operand has 2200 states, 1522 states have (on average 1.3442838370565047) internal successors, (2046), 1568 states have internal predecessors, (2046), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:32:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:39,179 INFO L93 Difference]: Finished difference Result 4386 states and 6444 transitions. [2022-11-20 10:32:39,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:39,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-20 10:32:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:39,218 INFO L225 Difference]: With dead ends: 4386 [2022-11-20 10:32:39,218 INFO L226 Difference]: Without dead ends: 2189 [2022-11-20 10:32:39,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:39,245 INFO L413 NwaCegarLoop]: 3178 mSDtfsCounter, 3166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3166 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:39,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3166 Valid, 3178 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2022-11-20 10:32:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2189. [2022-11-20 10:32:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 1514 states have (on average 1.3408190224570673) internal successors, (2030), 1557 states have internal predecessors, (2030), 571 states have call successors, (571), 104 states have call predecessors, (571), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2022-11-20 10:32:39,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 3167 transitions. [2022-11-20 10:32:39,566 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 3167 transitions. Word has length 16 [2022-11-20 10:32:39,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:39,568 INFO L495 AbstractCegarLoop]: Abstraction has 2189 states and 3167 transitions. [2022-11-20 10:32:39,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:32:39,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 3167 transitions. [2022-11-20 10:32:39,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:32:39,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:39,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:39,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:39,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:39,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:39,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:39,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1309145204, now seen corresponding path program 1 times [2022-11-20 10:32:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:39,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528920736] [2022-11-20 10:32:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:39,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:39,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:39,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:39,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 10:32:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:40,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:40,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:40,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:40,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:40,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528920736] [2022-11-20 10:32:40,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528920736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:40,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:40,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:40,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559021786] [2022-11-20 10:32:40,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:40,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:40,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:40,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:40,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:40,742 INFO L87 Difference]: Start difference. First operand 2189 states and 3167 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:32:40,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:40,966 INFO L93 Difference]: Finished difference Result 2191 states and 3168 transitions. [2022-11-20 10:32:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:40,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-20 10:32:40,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:40,979 INFO L225 Difference]: With dead ends: 2191 [2022-11-20 10:32:40,979 INFO L226 Difference]: Without dead ends: 2188 [2022-11-20 10:32:40,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:40,983 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 3151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3151 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:40,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3151 Valid, 3164 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:40,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2022-11-20 10:32:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2188. [2022-11-20 10:32:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1514 states have (on average 1.3401585204755615) internal successors, (2029), 1556 states have internal predecessors, (2029), 570 states have call successors, (570), 104 states have call predecessors, (570), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2022-11-20 10:32:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3165 transitions. [2022-11-20 10:32:41,206 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3165 transitions. Word has length 17 [2022-11-20 10:32:41,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:41,207 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3165 transitions. [2022-11-20 10:32:41,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:32:41,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3165 transitions. [2022-11-20 10:32:41,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:32:41,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:41,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:41,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:41,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:41,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:41,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:41,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1927782221, now seen corresponding path program 1 times [2022-11-20 10:32:41,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:41,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345417145] [2022-11-20 10:32:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:41,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:41,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:41,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:41,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 10:32:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:42,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:42,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:42,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:42,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:42,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345417145] [2022-11-20 10:32:42,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345417145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:42,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:42,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:42,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200456618] [2022-11-20 10:32:42,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:42,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:42,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:42,258 INFO L87 Difference]: Start difference. First operand 2188 states and 3165 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:32:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:42,527 INFO L93 Difference]: Finished difference Result 2190 states and 3166 transitions. [2022-11-20 10:32:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:42,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-20 10:32:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:42,540 INFO L225 Difference]: With dead ends: 2190 [2022-11-20 10:32:42,540 INFO L226 Difference]: Without dead ends: 2187 [2022-11-20 10:32:42,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:42,544 INFO L413 NwaCegarLoop]: 3162 mSDtfsCounter, 3148 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3148 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:42,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3148 Valid, 3162 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2022-11-20 10:32:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2187. [2022-11-20 10:32:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 1514 states have (on average 1.3394980184940555) internal successors, (2028), 1555 states have internal predecessors, (2028), 569 states have call successors, (569), 104 states have call predecessors, (569), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2022-11-20 10:32:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3163 transitions. [2022-11-20 10:32:42,758 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3163 transitions. Word has length 18 [2022-11-20 10:32:42,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:42,759 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3163 transitions. [2022-11-20 10:32:42,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:32:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3163 transitions. [2022-11-20 10:32:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:32:42,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:42,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:42,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:42,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:42,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:42,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:42,975 INFO L85 PathProgramCache]: Analyzing trace with hash -369301865, now seen corresponding path program 1 times [2022-11-20 10:32:42,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:42,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827441054] [2022-11-20 10:32:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:42,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:42,979 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:42,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 10:32:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:43,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:43,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:43,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:43,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:43,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827441054] [2022-11-20 10:32:43,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827441054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:43,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:43,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:43,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040069228] [2022-11-20 10:32:43,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:43,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:43,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:43,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:43,765 INFO L87 Difference]: Start difference. First operand 2187 states and 3163 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:32:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:44,133 INFO L93 Difference]: Finished difference Result 4958 states and 7106 transitions. [2022-11-20 10:32:44,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:44,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-20 10:32:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:44,150 INFO L225 Difference]: With dead ends: 4958 [2022-11-20 10:32:44,150 INFO L226 Difference]: Without dead ends: 2773 [2022-11-20 10:32:44,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:44,198 INFO L413 NwaCegarLoop]: 3554 mSDtfsCounter, 1198 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 6256 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:44,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 6256 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2022-11-20 10:32:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2770. [2022-11-20 10:32:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 1912 states have (on average 1.3216527196652719) internal successors, (2527), 1972 states have internal predecessors, (2527), 688 states have call successors, (688), 172 states have call predecessors, (688), 169 states have return successors, (693), 667 states have call predecessors, (693), 679 states have call successors, (693) [2022-11-20 10:32:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3908 transitions. [2022-11-20 10:32:44,452 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3908 transitions. Word has length 19 [2022-11-20 10:32:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:44,453 INFO L495 AbstractCegarLoop]: Abstraction has 2770 states and 3908 transitions. [2022-11-20 10:32:44,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:32:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3908 transitions. [2022-11-20 10:32:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 10:32:44,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:44,467 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:44,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:44,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:44,682 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:44,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:44,682 INFO L85 PathProgramCache]: Analyzing trace with hash 393489938, now seen corresponding path program 1 times [2022-11-20 10:32:44,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:44,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643220184] [2022-11-20 10:32:44,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:44,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:44,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:44,685 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:44,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 10:32:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:45,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:45,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:45,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:45,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:45,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643220184] [2022-11-20 10:32:45,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643220184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:45,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:45,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:45,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468376271] [2022-11-20 10:32:45,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:45,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:45,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:45,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:45,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:45,646 INFO L87 Difference]: Start difference. First operand 2770 states and 3908 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 10:32:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:45,967 INFO L93 Difference]: Finished difference Result 5549 states and 7834 transitions. [2022-11-20 10:32:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:45,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-11-20 10:32:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:46,000 INFO L225 Difference]: With dead ends: 5549 [2022-11-20 10:32:46,000 INFO L226 Difference]: Without dead ends: 2790 [2022-11-20 10:32:46,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:46,014 INFO L413 NwaCegarLoop]: 3145 mSDtfsCounter, 43 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6236 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:46,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 6236 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2022-11-20 10:32:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2790. [2022-11-20 10:32:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 1928 states have (on average 1.3215767634854771) internal successors, (2548), 1988 states have internal predecessors, (2548), 692 states have call successors, (692), 172 states have call predecessors, (692), 169 states have return successors, (697), 671 states have call predecessors, (697), 683 states have call successors, (697) [2022-11-20 10:32:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3937 transitions. [2022-11-20 10:32:46,288 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3937 transitions. Word has length 55 [2022-11-20 10:32:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:46,289 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 3937 transitions. [2022-11-20 10:32:46,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 10:32:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3937 transitions. [2022-11-20 10:32:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 10:32:46,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:46,292 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:46,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:46,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:46,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:46,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash -742912640, now seen corresponding path program 1 times [2022-11-20 10:32:46,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:46,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683004903] [2022-11-20 10:32:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:46,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:46,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:46,520 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:46,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 10:32:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:47,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:47,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:32:47,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:47,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:47,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683004903] [2022-11-20 10:32:47,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683004903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:47,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:47,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799714388] [2022-11-20 10:32:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:47,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:47,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:47,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:47,302 INFO L87 Difference]: Start difference. First operand 2790 states and 3937 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:32:47,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:47,602 INFO L93 Difference]: Finished difference Result 5571 states and 7929 transitions. [2022-11-20 10:32:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-11-20 10:32:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:47,619 INFO L225 Difference]: With dead ends: 5571 [2022-11-20 10:32:47,619 INFO L226 Difference]: Without dead ends: 2792 [2022-11-20 10:32:47,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:47,670 INFO L413 NwaCegarLoop]: 3140 mSDtfsCounter, 0 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6273 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:47,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6273 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:47,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2022-11-20 10:32:47,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2790. [2022-11-20 10:32:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 1928 states have (on average 1.3184647302904564) internal successors, (2542), 1988 states have internal predecessors, (2542), 692 states have call successors, (692), 172 states have call predecessors, (692), 169 states have return successors, (697), 671 states have call predecessors, (697), 683 states have call successors, (697) [2022-11-20 10:32:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3931 transitions. [2022-11-20 10:32:47,918 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3931 transitions. Word has length 57 [2022-11-20 10:32:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:47,921 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 3931 transitions. [2022-11-20 10:32:47,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:32:47,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3931 transitions. [2022-11-20 10:32:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 10:32:47,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:47,927 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:47,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:48,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:48,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:48,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash -64168537, now seen corresponding path program 1 times [2022-11-20 10:32:48,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:48,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744165073] [2022-11-20 10:32:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:48,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:48,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:48,179 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:48,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 10:32:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:48,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:32:48,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:32:49,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:49,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:49,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744165073] [2022-11-20 10:32:49,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744165073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:49,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:49,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:49,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810470499] [2022-11-20 10:32:49,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:49,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:49,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:49,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:49,127 INFO L87 Difference]: Start difference. First operand 2790 states and 3931 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 10:32:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:49,455 INFO L93 Difference]: Finished difference Result 4594 states and 6423 transitions. [2022-11-20 10:32:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:49,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-11-20 10:32:49,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:49,468 INFO L225 Difference]: With dead ends: 4594 [2022-11-20 10:32:49,469 INFO L226 Difference]: Without dead ends: 2316 [2022-11-20 10:32:49,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:49,481 INFO L413 NwaCegarLoop]: 3045 mSDtfsCounter, 2130 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:49,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 4044 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-11-20 10:32:49,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2316. [2022-11-20 10:32:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 1607 states have (on average 1.3067828251400124) internal successors, (2100), 1652 states have internal predecessors, (2100), 551 states have call successors, (551), 161 states have call predecessors, (551), 157 states have return successors, (538), 531 states have call predecessors, (538), 538 states have call successors, (538) [2022-11-20 10:32:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3189 transitions. [2022-11-20 10:32:49,714 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3189 transitions. Word has length 63 [2022-11-20 10:32:49,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:49,715 INFO L495 AbstractCegarLoop]: Abstraction has 2316 states and 3189 transitions. [2022-11-20 10:32:49,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 10:32:49,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3189 transitions. [2022-11-20 10:32:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 10:32:49,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:49,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:49,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:49,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:49,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:49,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1064965082, now seen corresponding path program 1 times [2022-11-20 10:32:49,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:49,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983915870] [2022-11-20 10:32:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:49,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:49,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:49,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:49,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 10:32:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:32:55,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:32:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:33:01,261 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 10:33:01,261 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:33:01,262 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 10:33:01,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:01,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:01,487 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:01,490 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:33:01,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:33:01 BoogieIcfgContainer [2022-11-20 10:33:01,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:33:01,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:33:01,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:33:01,563 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:33:01,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:37" (3/4) ... [2022-11-20 10:33:01,566 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:33:01,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:33:01,567 INFO L158 Benchmark]: Toolchain (without parser) took 81824.46ms. Allocated memory was 65.0MB in the beginning and 488.6MB in the end (delta: 423.6MB). Free memory was 33.9MB in the beginning and 253.1MB in the end (delta: -219.1MB). Peak memory consumption was 203.8MB. Max. memory is 16.1GB. [2022-11-20 10:33:01,568 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 65.0MB. Free memory was 42.1MB in the beginning and 42.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:33:01,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4553.00ms. Allocated memory was 65.0MB in the beginning and 239.1MB in the end (delta: 174.1MB). Free memory was 33.7MB in the beginning and 121.4MB in the end (delta: -87.6MB). Peak memory consumption was 88.4MB. Max. memory is 16.1GB. [2022-11-20 10:33:01,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 345.48ms. Allocated memory is still 239.1MB. Free memory was 121.4MB in the beginning and 144.0MB in the end (delta: -22.6MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2022-11-20 10:33:01,569 INFO L158 Benchmark]: Boogie Preprocessor took 394.03ms. Allocated memory is still 239.1MB. Free memory was 144.0MB in the beginning and 106.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-20 10:33:01,569 INFO L158 Benchmark]: RCFGBuilder took 52545.10ms. Allocated memory was 239.1MB in the beginning and 488.6MB in the end (delta: 249.6MB). Free memory was 106.3MB in the beginning and 307.8MB in the end (delta: -201.6MB). Peak memory consumption was 218.1MB. Max. memory is 16.1GB. [2022-11-20 10:33:01,570 INFO L158 Benchmark]: TraceAbstraction took 23974.40ms. Allocated memory is still 488.6MB. Free memory was 306.8MB in the beginning and 253.1MB in the end (delta: 53.7MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. [2022-11-20 10:33:01,570 INFO L158 Benchmark]: Witness Printer took 4.22ms. Allocated memory is still 488.6MB. Free memory is still 253.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:33:01,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 65.0MB. Free memory was 42.1MB in the beginning and 42.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4553.00ms. Allocated memory was 65.0MB in the beginning and 239.1MB in the end (delta: 174.1MB). Free memory was 33.7MB in the beginning and 121.4MB in the end (delta: -87.6MB). Peak memory consumption was 88.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 345.48ms. Allocated memory is still 239.1MB. Free memory was 121.4MB in the beginning and 144.0MB in the end (delta: -22.6MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 394.03ms. Allocated memory is still 239.1MB. Free memory was 144.0MB in the beginning and 106.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * RCFGBuilder took 52545.10ms. Allocated memory was 239.1MB in the beginning and 488.6MB in the end (delta: 249.6MB). Free memory was 106.3MB in the beginning and 307.8MB in the end (delta: -201.6MB). Peak memory consumption was 218.1MB. Max. memory is 16.1GB. * TraceAbstraction took 23974.40ms. Allocated memory is still 488.6MB. Free memory was 306.8MB in the beginning and 253.1MB in the end (delta: 53.7MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. * Witness Printer took 4.22ms. Allocated memory is still 488.6MB. Free memory is still 253.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 10595. Possible FailurePath: [L5971] static unsigned int vhost_zcopy_mask ; [L9348] static int experimental_zcopytx ; [L10590-L10593] static struct file_operations const vhost_net_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_net_ioctl, & vhost_net_compat_ioctl, 0, & vhost_net_open, 0, & vhost_net_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L10620] int LDV_IN_INTERRUPT ; [L11002] static int ldv_mutex_cred_guard_mutex ; [L11109] static int ldv_mutex_lock ; [L11216] static int ldv_mutex_mtx ; [L11323] static int ldv_mutex_mutex ; VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=0, ldv_mutex_cred_guard_mutex=0, ldv_mutex_lock=0, ldv_mutex_mtx=0, ldv_mutex_mutex=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10623] struct inode *var_group1 ; [L10624] struct file *var_group2 ; [L10625] unsigned int var_vhost_net_ioctl_27_p1 ; [L10626] unsigned long var_vhost_net_ioctl_27_p2 ; [L10627] unsigned int var_vhost_net_compat_ioctl_28_p1 ; [L10628] unsigned long var_vhost_net_compat_ioctl_28_p2 ; [L10629] int res_vhost_net_open_13 ; [L10630] int ldv_s_vhost_net_fops_file_operations ; [L10631] int tmp ; [L10632] int tmp___0 ; [L10633] int tmp___1 ; [L10635] ldv_s_vhost_net_fops_file_operations = 0 [L10636] LDV_IN_INTERRUPT = 1 [L10637] CALL ldv_initialize() [L11433] ldv_mutex_cred_guard_mutex = 1 [L11434] ldv_mutex_lock = 1 [L11435] ldv_mutex_mtx = 1 [L11436] ldv_mutex_mutex = 1 VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10604] CALL, EXPR misc_register(& vhost_net_misc) [L11595] return __VERIFIER_nondet_int(); [L10604] RET, EXPR misc_register(& vhost_net_misc) [L10604] tmp = misc_register(& vhost_net_misc) [L10605] return (tmp); VAL [\result=0, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10682] tmp___1 = __VERIFIER_nondet_int() [L10683] COND TRUE tmp___1 != 0 || ldv_s_vhost_net_fops_file_operations != 0 VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=-2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=2, tmp___1=-2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10670] FCALL ldv_handler_precall() VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=2, tmp___1=-2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10671] CALL vhost_net_ioctl(var_group2, var_vhost_net_ioctl_27_p1, var_vhost_net_ioctl_27_p2) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={299092953661440:36028797018947664}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={299092953661440:36028797018947664}, lock={299092953661440:36028797018947664}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={299092953661440:36028797018947664}, lock={299092953661440:36028797018947664}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, ldv_func_arg1={299092953661440:36028797018947664}, ldv_func_arg1={299092953661440:36028797018947664}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, ldv_func_arg1={299092953661440:36028797018947664}, ldv_func_arg1={299092953661440:36028797018947664}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={299092953661440:36028797018947648}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={299092953661440:36028797018947648}, dev={299092953661440:36028797018947648}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5283] struct task_struct *pfo_ret__ ; [L5286] case 1UL: [L5289] case 2UL: [L5292] case 4UL: [L5295] case 8UL: VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(ldv_mutex_mutex)=1, \result={0:1024}, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, pfo_ret__={0:1024}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={299092953661440:36028797018947648}, dev={299092953661440:36028797018947648}, experimental_zcopytx=0, get_current()={0:1024}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={299092953661440:36028797018947648}, n={299092953661440:36028797018947648}, rx_sock={254:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, err=0, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={299092953661440:36028797018947648}, n={299092953661440:36028797018947648}, rx_sock={254:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={299092953661440:36028797018947648}, rx_sock={254:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={299092953661440:36028797018947648}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={299092953661440:36028797018965064}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={299092953661440:36028797018965072}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={299092953661440:36028797018965072}, lock={299092953661440:36028797018965072}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 105 procedures, 2200 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.8s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12851 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12836 mSDsluCounter, 32313 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9925 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 22388 mSDtfsCounter, 37 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2790occurred in iteration=5, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.8s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 308 NumberOfCodeBlocks, 308 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 238 ConstructedInterpolants, 0 QuantifiedInterpolants, 429 SizeOfPredicates, 1 NumberOfNonLiveVariables, 4343 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 10:33:01,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ebfccf5-2fc6-4219-8af0-e0b0a7bc4ff9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample