./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 8393723b 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_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 20:51:38,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:51:38,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:51:38,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:51:38,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:51:38,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:51:38,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:51:38,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:51:38,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:51:38,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:51:38,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:51:38,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:51:38,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:51:38,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:51:38,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:51:38,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:51:38,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:51:38,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:51:38,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:51:38,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:51:38,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:51:38,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:51:38,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:51:38,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:51:38,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:51:38,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:51:38,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:51:38,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:51:38,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:51:38,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:51:38,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:51:38,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:51:38,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:51:38,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:51:38,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:51:38,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:51:38,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:51:38,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:51:38,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:51:38,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:51:38,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:51:38,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:51:38,735 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:51:38,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:51:38,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:51:38,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:51:38,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:51:38,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:51:38,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:51:38,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:51:38,739 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:51:38,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:51:38,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:51:38,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:51:38,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:51:38,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:51:38,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:51:38,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:51:38,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:51:38,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:51:38,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:51:38,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:51:38,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:51:38,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:51:38,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:51:38,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:51:38,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:51:38,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:51:38,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:51:38,744 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:51:38,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:51:38,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:51:38,745 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_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-11-18 20:51:39,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:51:39,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:51:39,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:51:39,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:51:39,106 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:51:39,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-18 20:51:39,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/data/f4678a0a2/84e4229ceb3844ae97edcfe37b77c362/FLAG077dd48ab [2022-11-18 20:51:40,198 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:51:40,198 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-18 20:51:40,256 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/data/f4678a0a2/84e4229ceb3844ae97edcfe37b77c362/FLAG077dd48ab [2022-11-18 20:51:40,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/data/f4678a0a2/84e4229ceb3844ae97edcfe37b77c362 [2022-11-18 20:51:40,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:51:40,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:51:40,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:51:40,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:51:40,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:51:40,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:40" (1/1) ... [2022-11-18 20:51:40,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1936b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:40, skipping insertion in model container [2022-11-18 20:51:40,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:40" (1/1) ... [2022-11-18 20:51:40,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:51:40,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:51:43,130 WARN L234 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_fa4588f8-d72d-4143-b619-b4d383acb255/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-18 20:51:43,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:51:43,270 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:51:43,734 WARN L234 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_fa4588f8-d72d-4143-b619-b4d383acb255/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-18 20:51:43,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:51:43,872 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:51:43,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43 WrapperNode [2022-11-18 20:51:43,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:51:43,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:51:43,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:51:43,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:51:43,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:43,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:44,199 INFO L138 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6642 [2022-11-18 20:51:44,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:51:44,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:51:44,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:51:44,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:51:44,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:44,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:44,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:44,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:44,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:44,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:44,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:44,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:44,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:51:44,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:51:44,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:51:44,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:51:44,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (1/1) ... [2022-11-18 20:51:44,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:51:44,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:51:44,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:51:44,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:51:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-11-18 20:51:44,670 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-11-18 20:51:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-11-18 20:51:44,671 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-11-18 20:51:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-11-18 20:51:44,671 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-11-18 20:51:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-11-18 20:51:44,671 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-11-18 20:51:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-18 20:51:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-18 20:51:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-11-18 20:51:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-11-18 20:51:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 20:51:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-11-18 20:51:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-11-18 20:51:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 20:51:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-18 20:51:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-18 20:51:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-11-18 20:51:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-11-18 20:51:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-11-18 20:51:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-11-18 20:51:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-11-18 20:51:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-11-18 20:51:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-18 20:51:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-18 20:51:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-18 20:51:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-18 20:51:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-18 20:51:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-18 20:51:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-11-18 20:51:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-11-18 20:51:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 20:51:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 20:51:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-11-18 20:51:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-11-18 20:51:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 20:51:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 20:51:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 20:51:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 20:51:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-18 20:51:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-18 20:51:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-18 20:51:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-11-18 20:51:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-11-18 20:51:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-11-18 20:51:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-11-18 20:51:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-11-18 20:51:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-11-18 20:51:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-11-18 20:51:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-11-18 20:51:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-11-18 20:51:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-11-18 20:51:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2022-11-18 20:51:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2022-11-18 20:51:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-18 20:51:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-18 20:51:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-18 20:51:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-18 20:51:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-18 20:51:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-18 20:51:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-11-18 20:51:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-11-18 20:51:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-11-18 20:51:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-11-18 20:51:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:51:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-18 20:51:44,684 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-18 20:51:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-11-18 20:51:44,684 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-11-18 20:51:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-11-18 20:51:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-11-18 20:51:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:51:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-18 20:51:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-18 20:51:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-11-18 20:51:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-11-18 20:51:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-11-18 20:51:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-11-18 20:51:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:51:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:51:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-11-18 20:51:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-11-18 20:51:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-11-18 20:51:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-11-18 20:51:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-18 20:51:44,688 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-18 20:51:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-11-18 20:51:44,688 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-11-18 20:51:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-11-18 20:51:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-11-18 20:51:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-18 20:51:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-18 20:51:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-18 20:51:44,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-18 20:51:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-18 20:51:44,691 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-18 20:51:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-18 20:51:44,691 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-18 20:51:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-18 20:51:44,692 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-18 20:51:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-11-18 20:51:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-11-18 20:51:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-11-18 20:51:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-11-18 20:51:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-11-18 20:51:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-11-18 20:51:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-18 20:51:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-18 20:51:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-18 20:51:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-18 20:51:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 20:51:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-18 20:51:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-18 20:51:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-11-18 20:51:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-11-18 20:51:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-18 20:51:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-18 20:51:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 20:51:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-11-18 20:51:44,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-11-18 20:51:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:51:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-11-18 20:51:44,701 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-11-18 20:51:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-11-18 20:51:44,703 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-11-18 20:51:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-11-18 20:51:44,703 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-11-18 20:51:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-18 20:51:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-18 20:51:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 20:51:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 20:51:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-18 20:51:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-11-18 20:51:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-11-18 20:51:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:51:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-18 20:51:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-18 20:51:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-11-18 20:51:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-11-18 20:51:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-18 20:51:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-18 20:51:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-11-18 20:51:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-11-18 20:51:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-11-18 20:51:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-11-18 20:51:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-11-18 20:51:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-11-18 20:51:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-11-18 20:51:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-11-18 20:51:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-11-18 20:51:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-11-18 20:51:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-18 20:51:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-18 20:51:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-18 20:51:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-18 20:51:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 20:51:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 20:51:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-11-18 20:51:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-11-18 20:51:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-18 20:51:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-18 20:51:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:51:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-11-18 20:51:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-11-18 20:51:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-18 20:51:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-18 20:51:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-11-18 20:51:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-11-18 20:51:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:51:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-11-18 20:51:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-11-18 20:51:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-11-18 20:51:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-11-18 20:51:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-11-18 20:51:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-11-18 20:51:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:51:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-18 20:51:44,717 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-18 20:51:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-18 20:51:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-18 20:51:44,717 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-18 20:51:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 20:51:44,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 20:51:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-11-18 20:51:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-11-18 20:51:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-18 20:51:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-18 20:51:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-18 20:51:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-18 20:51:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-11-18 20:51:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-11-18 20:51:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-18 20:51:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-18 20:51:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2022-11-18 20:51:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2022-11-18 20:51:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-18 20:51:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-18 20:51:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-11-18 20:51:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-11-18 20:51:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-18 20:51:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-18 20:51:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-18 20:51:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-18 20:51:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-11-18 20:51:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-11-18 20:51:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-11-18 20:51:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-11-18 20:51:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-18 20:51:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-18 20:51:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-11-18 20:51:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-11-18 20:51:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-11-18 20:51:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-11-18 20:51:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 20:51:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 20:51:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-11-18 20:51:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-11-18 20:51:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-18 20:51:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-18 20:51:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-18 20:51:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-18 20:51:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-11-18 20:51:44,723 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-11-18 20:51:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:51:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-11-18 20:51:44,723 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-11-18 20:51:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-11-18 20:51:44,723 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-11-18 20:51:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-18 20:51:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-18 20:51:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:51:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:51:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-18 20:51:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-18 20:51:45,770 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:51:45,774 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:51:51,113 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 [2022-11-18 20:51:51,113 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; [2022-11-18 20:51:51,113 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 [2022-11-18 20:51:51,113 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; [2022-11-18 20:51:51,113 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-11-18 20:51:51,113 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-11-18 20:51:51,113 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; [2022-11-18 20:51:51,114 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; [2022-11-18 20:51:51,114 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-11-18 20:51:51,114 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-11-18 20:51:51,114 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-11-18 20:51:51,114 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; [2022-11-18 20:51:51,114 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; [2022-11-18 20:51:51,114 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-11-18 20:51:51,114 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; [2022-11-18 20:51:51,114 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; [2022-11-18 20:51:51,114 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; [2022-11-18 20:51:51,115 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 [2022-11-18 20:51:51,115 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; [2022-11-18 20:51:51,115 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; [2022-11-18 20:51:51,115 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); [2022-11-18 20:51:51,115 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; [2022-11-18 20:51:51,115 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; [2022-11-18 20:51:51,115 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; [2022-11-18 20:51:51,115 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; [2022-11-18 20:51:53,521 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 [2022-11-18 20:51:53,521 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; [2022-11-18 20:51:53,521 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; [2022-11-18 20:51:53,521 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; [2022-11-18 20:51:53,521 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-11-18 20:51:53,521 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-11-18 20:51:53,522 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-11-18 20:51:53,522 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 [2022-11-18 20:51:53,522 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; [2022-11-18 20:51:53,522 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; [2022-11-18 20:51:53,522 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; [2022-11-18 20:51:53,522 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; [2022-11-18 20:51:53,522 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; [2022-11-18 20:51:53,522 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; [2022-11-18 20:51:53,523 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; [2022-11-18 20:51:53,523 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; [2022-11-18 20:51:53,523 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; [2022-11-18 20:51:53,523 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-11-18 20:51:53,523 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-11-18 20:51:53,523 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); [2022-11-18 20:51:53,523 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 [2022-11-18 20:51:53,523 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; [2022-11-18 20:51:53,523 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; [2022-11-18 20:51:53,524 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-11-18 20:51:53,524 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; [2022-11-18 20:51:54,893 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:51:54,918 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:51:54,918 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:51:54,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:54 BoogieIcfgContainer [2022-11-18 20:51:54,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:51:54,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:51:54,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:51:54,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:51:54,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:51:40" (1/3) ... [2022-11-18 20:51:54,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d839a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:54, skipping insertion in model container [2022-11-18 20:51:54,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:43" (2/3) ... [2022-11-18 20:51:54,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d839a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:54, skipping insertion in model container [2022-11-18 20:51:54,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:54" (3/3) ... [2022-11-18 20:51:54,933 INFO L112 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-18 20:51:54,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:51:54,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:51:55,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:51:55,067 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;@b9347bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:51:55,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:51:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 2226 states, 1537 states have (on average 1.3441769681197138) internal successors, (2066), 1583 states have internal predecessors, (2066), 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) [2022-11-18 20:51:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:51:55,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:55,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:55,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1459195205, now seen corresponding path program 1 times [2022-11-18 20:51:55,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:55,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410777635] [2022-11-18 20:51:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:55,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:55,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:51:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:55,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:55,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410777635] [2022-11-18 20:51:55,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410777635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:55,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:55,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:51:55,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230019285] [2022-11-18 20:51:55,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:55,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:51:55,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:55,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:51:55,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:51:55,729 INFO L87 Difference]: Start difference. First operand has 2226 states, 1537 states have (on average 1.3441769681197138) internal successors, (2066), 1583 states have internal predecessors, (2066), 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) [2022-11-18 20:51:56,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:56,141 INFO L93 Difference]: Finished difference Result 4436 states and 6521 transitions. [2022-11-18 20:51:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:51:56,145 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 [2022-11-18 20:51:56,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:56,197 INFO L225 Difference]: With dead ends: 4436 [2022-11-18 20:51:56,198 INFO L226 Difference]: Without dead ends: 2215 [2022-11-18 20:51:56,220 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 [2022-11-18 20:51:56,224 INFO L413 NwaCegarLoop]: 3212 mSDtfsCounter, 3202 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 3212 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 [2022-11-18 20:51:56,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3202 Valid, 3212 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:51:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2022-11-18 20:51:56,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2215. [2022-11-18 20:51:56,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 1529 states have (on average 1.340745585349902) internal successors, (2050), 1572 states have internal predecessors, (2050), 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) [2022-11-18 20:51:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3201 transitions. [2022-11-18 20:51:56,485 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3201 transitions. Word has length 16 [2022-11-18 20:51:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:56,487 INFO L495 AbstractCegarLoop]: Abstraction has 2215 states and 3201 transitions. [2022-11-18 20:51:56,488 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) [2022-11-18 20:51:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3201 transitions. [2022-11-18 20:51:56,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:51:56,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:56,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:56,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:51:56,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:56,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2010619409, now seen corresponding path program 1 times [2022-11-18 20:51:56,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:56,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139892056] [2022-11-18 20:51:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:51:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:56,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:56,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139892056] [2022-11-18 20:51:56,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139892056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:56,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:56,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:51:56,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794033441] [2022-11-18 20:51:56,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:51:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:51:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:51:56,677 INFO L87 Difference]: Start difference. First operand 2215 states and 3201 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) [2022-11-18 20:51:56,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:56,900 INFO L93 Difference]: Finished difference Result 2217 states and 3202 transitions. [2022-11-18 20:51:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:51:56,903 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 [2022-11-18 20:51:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:56,916 INFO L225 Difference]: With dead ends: 2217 [2022-11-18 20:51:56,916 INFO L226 Difference]: Without dead ends: 2214 [2022-11-18 20:51:56,922 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 [2022-11-18 20:51:56,924 INFO L413 NwaCegarLoop]: 3198 mSDtfsCounter, 3187 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3187 SdHoareTripleChecker+Valid, 3198 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 [2022-11-18 20:51:56,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3187 Valid, 3198 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:51:56,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2022-11-18 20:51:57,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2214. [2022-11-18 20:51:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 1529 states have (on average 1.3400915631131458) internal successors, (2049), 1571 states have internal predecessors, (2049), 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) [2022-11-18 20:51:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3199 transitions. [2022-11-18 20:51:57,065 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3199 transitions. Word has length 17 [2022-11-18 20:51:57,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:57,067 INFO L495 AbstractCegarLoop]: Abstraction has 2214 states and 3199 transitions. [2022-11-18 20:51:57,068 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) [2022-11-18 20:51:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3199 transitions. [2022-11-18 20:51:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:51:57,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:57,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:57,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:51:57,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:57,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2094282120, now seen corresponding path program 1 times [2022-11-18 20:51:57,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:57,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127960497] [2022-11-18 20:51:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:57,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:51:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:57,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:57,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127960497] [2022-11-18 20:51:57,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127960497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:57,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:57,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:51:57,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363442113] [2022-11-18 20:51:57,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:57,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:51:57,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:57,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:51:57,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:51:57,229 INFO L87 Difference]: Start difference. First operand 2214 states and 3199 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) [2022-11-18 20:51:57,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:57,373 INFO L93 Difference]: Finished difference Result 2216 states and 3200 transitions. [2022-11-18 20:51:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:51:57,373 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 [2022-11-18 20:51:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:57,385 INFO L225 Difference]: With dead ends: 2216 [2022-11-18 20:51:57,386 INFO L226 Difference]: Without dead ends: 2213 [2022-11-18 20:51:57,388 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 [2022-11-18 20:51:57,389 INFO L413 NwaCegarLoop]: 3196 mSDtfsCounter, 3184 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 3196 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 [2022-11-18 20:51:57,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3184 Valid, 3196 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:51:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2022-11-18 20:51:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2213. [2022-11-18 20:51:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 1529 states have (on average 1.3394375408763899) internal successors, (2048), 1570 states have internal predecessors, (2048), 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) [2022-11-18 20:51:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3197 transitions. [2022-11-18 20:51:57,525 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3197 transitions. Word has length 18 [2022-11-18 20:51:57,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:57,526 INFO L495 AbstractCegarLoop]: Abstraction has 2213 states and 3197 transitions. [2022-11-18 20:51:57,526 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) [2022-11-18 20:51:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3197 transitions. [2022-11-18 20:51:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:51:57,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:57,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:57,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:51:57,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:57,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:57,529 INFO L85 PathProgramCache]: Analyzing trace with hash 497215506, now seen corresponding path program 1 times [2022-11-18 20:51:57,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:57,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990661957] [2022-11-18 20:51:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:57,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:51:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:57,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:57,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990661957] [2022-11-18 20:51:57,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990661957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:57,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:57,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:51:57,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133509279] [2022-11-18 20:51:57,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:57,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:51:57,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:57,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:51:57,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:51:57,700 INFO L87 Difference]: Start difference. First operand 2213 states and 3197 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) [2022-11-18 20:51:58,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:58,073 INFO L93 Difference]: Finished difference Result 5112 states and 7341 transitions. [2022-11-18 20:51:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:51:58,073 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 [2022-11-18 20:51:58,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:58,100 INFO L225 Difference]: With dead ends: 5112 [2022-11-18 20:51:58,100 INFO L226 Difference]: Without dead ends: 2903 [2022-11-18 20:51:58,111 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 [2022-11-18 20:51:58,121 INFO L413 NwaCegarLoop]: 3647 mSDtfsCounter, 1308 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 6427 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 [2022-11-18 20:51:58,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 6427 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:51:58,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2022-11-18 20:51:58,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2900. [2022-11-18 20:51:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 1999 states have (on average 1.3216608304152075) internal successors, (2642), 2061 states have internal predecessors, (2642), 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) [2022-11-18 20:51:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 4094 transitions. [2022-11-18 20:51:58,346 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 4094 transitions. Word has length 19 [2022-11-18 20:51:58,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:58,346 INFO L495 AbstractCegarLoop]: Abstraction has 2900 states and 4094 transitions. [2022-11-18 20:51:58,346 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) [2022-11-18 20:51:58,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 4094 transitions. [2022-11-18 20:51:58,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 20:51:58,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:58,350 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] [2022-11-18 20:51:58,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:51:58,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:58,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1973300331, now seen corresponding path program 1 times [2022-11-18 20:51:58,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:58,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880551550] [2022-11-18 20:51:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:58,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:58,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:51:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:58,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:51:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:58,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:51:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:58,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:51:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:51:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:58,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:51:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:51:58,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:58,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880551550] [2022-11-18 20:51:58,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880551550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:58,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:58,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:51:58,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365522104] [2022-11-18 20:51:58,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:58,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:51:58,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:58,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:51:58,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:51:58,597 INFO L87 Difference]: Start difference. First operand 2900 states and 4094 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) [2022-11-18 20:52:01,411 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 [] [2022-11-18 20:52:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:14,846 INFO L93 Difference]: Finished difference Result 6330 states and 9002 transitions. [2022-11-18 20:52:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:52:14,847 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 [2022-11-18 20:52:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:14,874 INFO L225 Difference]: With dead ends: 6330 [2022-11-18 20:52:14,874 INFO L226 Difference]: Without dead ends: 3443 [2022-11-18 20:52:14,889 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 [2022-11-18 20:52:14,890 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 2405 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 5503 mSolverCounterSat, 1436 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 4368 SdHoareTripleChecker+Invalid, 6940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1436 IncrementalHoareTripleChecker+Valid, 5503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:14,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 4368 Invalid, 6940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1436 Valid, 5503 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2022-11-18 20:52:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2022-11-18 20:52:15,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 2955. [2022-11-18 20:52:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2038 states have (on average 1.3189401373895977) internal successors, (2688), 2102 states have internal predecessors, (2688), 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) [2022-11-18 20:52:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 4164 transitions. [2022-11-18 20:52:15,137 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 4164 transitions. Word has length 56 [2022-11-18 20:52:15,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:15,137 INFO L495 AbstractCegarLoop]: Abstraction has 2955 states and 4164 transitions. [2022-11-18 20:52:15,138 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) [2022-11-18 20:52:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 4164 transitions. [2022-11-18 20:52:15,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-18 20:52:15,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:15,144 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] [2022-11-18 20:52:15,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:52:15,145 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:15,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:15,145 INFO L85 PathProgramCache]: Analyzing trace with hash -828188851, now seen corresponding path program 1 times [2022-11-18 20:52:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:15,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327882091] [2022-11-18 20:52:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:15,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:15,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:52:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:52:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:52:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:52:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:52:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:15,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:52:15,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327882091] [2022-11-18 20:52:15,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327882091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:15,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:15,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:52:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554949727] [2022-11-18 20:52:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:15,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:52:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:52:15,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:52:15,383 INFO L87 Difference]: Start difference. First operand 2955 states and 4164 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) [2022-11-18 20:52:17,935 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 [] [2022-11-18 20:52:24,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:24,641 INFO L93 Difference]: Finished difference Result 5997 states and 8555 transitions. [2022-11-18 20:52:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:52:24,647 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 [2022-11-18 20:52:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:24,670 INFO L225 Difference]: With dead ends: 5997 [2022-11-18 20:52:24,671 INFO L226 Difference]: Without dead ends: 3055 [2022-11-18 20:52:24,696 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 [2022-11-18 20:52:24,698 INFO L413 NwaCegarLoop]: 1750 mSDtfsCounter, 1393 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 412 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 3920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:24,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 4218 Invalid, 3920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [412 Valid, 3507 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-18 20:52:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2022-11-18 20:52:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 2955. [2022-11-18 20:52:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2038 states have (on average 1.3159960745829244) internal successors, (2682), 2102 states have internal predecessors, (2682), 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) [2022-11-18 20:52:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 4158 transitions. [2022-11-18 20:52:25,071 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 4158 transitions. Word has length 60 [2022-11-18 20:52:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:25,073 INFO L495 AbstractCegarLoop]: Abstraction has 2955 states and 4158 transitions. [2022-11-18 20:52:25,074 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) [2022-11-18 20:52:25,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 4158 transitions. [2022-11-18 20:52:25,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 20:52:25,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:25,079 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] [2022-11-18 20:52:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:52:25,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1320166996, now seen corresponding path program 1 times [2022-11-18 20:52:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:25,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7919132] [2022-11-18 20:52:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:25,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:25,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:52:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:52:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:52:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:25,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:52:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:52:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:52:25,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:25,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7919132] [2022-11-18 20:52:25,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7919132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:25,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:25,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:52:25,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504267018] [2022-11-18 20:52:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:25,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:52:25,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:25,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:52:25,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:52:25,442 INFO L87 Difference]: Start difference. First operand 2955 states and 4158 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) [2022-11-18 20:52:28,031 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 [] [2022-11-18 20:52:33,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:33,806 INFO L93 Difference]: Finished difference Result 5031 states and 7024 transitions. [2022-11-18 20:52:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:52:33,807 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 [2022-11-18 20:52:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:33,823 INFO L225 Difference]: With dead ends: 5031 [2022-11-18 20:52:33,824 INFO L226 Difference]: Without dead ends: 2507 [2022-11-18 20:52:33,836 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 [2022-11-18 20:52:33,838 INFO L413 NwaCegarLoop]: 1187 mSDtfsCounter, 2912 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 2958 mSolverCounterSat, 1118 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3175 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 4077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 2958 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:33,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3175 Valid, 2135 Invalid, 4077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 2958 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-18 20:52:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-11-18 20:52:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2388. [2022-11-18 20:52:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 1653 states have (on average 1.3049001814882033) internal successors, (2157), 1699 states have internal predecessors, (2157), 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) [2022-11-18 20:52:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3280 transitions. [2022-11-18 20:52:34,035 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3280 transitions. Word has length 63 [2022-11-18 20:52:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:34,037 INFO L495 AbstractCegarLoop]: Abstraction has 2388 states and 3280 transitions. [2022-11-18 20:52:34,037 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) [2022-11-18 20:52:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3280 transitions. [2022-11-18 20:52:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 20:52:34,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:34,041 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] [2022-11-18 20:52:34,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:52:34,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:34,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1114343259, now seen corresponding path program 1 times [2022-11-18 20:52:34,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:34,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070986392] [2022-11-18 20:52:34,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:34,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:52:34,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:52:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:52:34,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:52:34,399 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:52:34,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 20:52:34,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:52:34,406 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:34,411 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:52:34,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:52:34 BoogieIcfgContainer [2022-11-18 20:52:34,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:52:34,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:52:34,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:52:34,534 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:52:34,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:54" (3/4) ... [2022-11-18 20:52:34,538 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 20:52:34,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:52:34,539 INFO L158 Benchmark]: Toolchain (without parser) took 53943.63ms. Allocated memory was 123.7MB in the beginning and 681.6MB in the end (delta: 557.8MB). Free memory was 77.2MB in the beginning and 317.7MB in the end (delta: -240.5MB). Peak memory consumption was 316.1MB. Max. memory is 16.1GB. [2022-11-18 20:52:34,539 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 39.2MB in the beginning and 39.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:52:34,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3276.41ms. Allocated memory was 123.7MB in the beginning and 213.9MB in the end (delta: 90.2MB). Free memory was 76.9MB in the beginning and 129.5MB in the end (delta: -52.6MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2022-11-18 20:52:34,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 324.89ms. Allocated memory is still 213.9MB. Free memory was 129.5MB in the beginning and 94.9MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-18 20:52:34,541 INFO L158 Benchmark]: Boogie Preprocessor took 378.79ms. Allocated memory is still 213.9MB. Free memory was 94.9MB in the beginning and 100.4MB in the end (delta: -5.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2022-11-18 20:52:34,541 INFO L158 Benchmark]: RCFGBuilder took 10342.79ms. Allocated memory was 213.9MB in the beginning and 526.4MB in the end (delta: 312.5MB). Free memory was 100.4MB in the beginning and 410.6MB in the end (delta: -310.2MB). Peak memory consumption was 187.3MB. Max. memory is 16.1GB. [2022-11-18 20:52:34,541 INFO L158 Benchmark]: TraceAbstraction took 39607.37ms. Allocated memory was 526.4MB in the beginning and 681.6MB in the end (delta: 155.2MB). Free memory was 410.6MB in the beginning and 317.7MB in the end (delta: 92.8MB). Peak memory consumption was 248.0MB. Max. memory is 16.1GB. [2022-11-18 20:52:34,542 INFO L158 Benchmark]: Witness Printer took 4.55ms. Allocated memory is still 681.6MB. Free memory is still 317.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:52:34,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 39.2MB in the beginning and 39.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3276.41ms. Allocated memory was 123.7MB in the beginning and 213.9MB in the end (delta: 90.2MB). Free memory was 76.9MB in the beginning and 129.5MB in the end (delta: -52.6MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 324.89ms. Allocated memory is still 213.9MB. Free memory was 129.5MB in the beginning and 94.9MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 378.79ms. Allocated memory is still 213.9MB. Free memory was 94.9MB in the beginning and 100.4MB in the end (delta: -5.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * RCFGBuilder took 10342.79ms. Allocated memory was 213.9MB in the beginning and 526.4MB in the end (delta: 312.5MB). Free memory was 100.4MB in the beginning and 410.6MB in the end (delta: -310.2MB). Peak memory consumption was 187.3MB. Max. memory is 16.1GB. * TraceAbstraction took 39607.37ms. Allocated memory was 526.4MB in the beginning and 681.6MB in the end (delta: 155.2MB). Free memory was 410.6MB in the beginning and 317.7MB in the end (delta: 92.8MB). Peak memory consumption was 248.0MB. Max. memory is 16.1GB. * Witness Printer took 4.55ms. Allocated memory is still 681.6MB. Free memory is still 317.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 10595. Possible FailurePath: [L5971] static unsigned int vhost_zcopy_mask ; [L11216] static int ldv_mutex_mtx ; [L9348] static int experimental_zcopytx ; [L10620] int LDV_IN_INTERRUPT ; [L11109] static int ldv_mutex_lock ; [L11323] static int ldv_mutex_mutex ; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L11002] static int ldv_mutex_cred_guard_mutex ; [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}; VAL [__this_module={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, 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={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; VAL [__this_module={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, 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={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, 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={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: VAL [__this_module={18446744073709551618:18446744073709551620}, 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=1, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L10670] FCALL ldv_handler_precall() VAL [__this_module={18446744073709551618:18446744073709551620}, 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=1, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, 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={18446744073709551618:18446744073709551620}, 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={18446744073709551621:-17400}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={18446744073709551618:18446744073709551620}, 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={18446744073709551621:-17400}, lock={18446744073709551621:-17400}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={18446744073709551618:18446744073709551620}, 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={18446744073709551621:-17400}, lock={18446744073709551621:-17400}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={18446744073709551618:18446744073709551620}, experimental_zcopytx=0, ldv_func_arg1={18446744073709551621:-17400}, ldv_func_arg1={18446744073709551621:-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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={18446744073709551618:18446744073709551620}, experimental_zcopytx=0, ldv_func_arg1={18446744073709551621:-17400}, ldv_func_arg1={18446744073709551621:-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={216:0}, vhost_net_misc={215:0}, 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={18446744073709551618:18446744073709551620}, dev={18446744073709551621:-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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={18446744073709551618:18446744073709551620}, dev={18446744073709551621:-17416}, dev={18446744073709551621:-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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, 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={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(ldv_mutex_mutex)=1, \result={18446744073709551619:-4}, __this_module={18446744073709551618:18446744073709551620}, 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__={18446744073709551619:-4}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={18446744073709551618:18446744073709551620}, dev={18446744073709551621:-17416}, dev={18446744073709551621:-17416}, experimental_zcopytx=0, get_current()={18446744073709551619:-4}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={18446744073709551618:18446744073709551620}, 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={18446744073709551621:-17416}, n={18446744073709551621:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={18446744073709551618:18446744073709551620}, 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={18446744073709551621:-17416}, n={18446744073709551621:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={18446744073709551618:18446744073709551620}, 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={18446744073709551621:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={18446744073709551618:18446744073709551620}, 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={18446744073709551621:-17416}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0, vq={18446744073709551621:0}] [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={18446744073709551618:18446744073709551620}, 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={18446744073709551621:8}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={18446744073709551618:18446744073709551620}, 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={18446744073709551621:8}, lock={18446744073709551621:8}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={18446744073709551618:18446744073709551620}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 109 procedures, 2226 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.4s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 18413 SdHoareTripleChecker+Valid, 32.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17591 mSDsluCounter, 26754 SdHoareTripleChecker+Invalid, 29.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8981 mSDsCounter, 2970 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11981 IncrementalHoareTripleChecker+Invalid, 14954 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2970 mSolverCounterUnsat, 17773 mSDtfsCounter, 11981 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=2955occurred 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: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 710 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 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 [2022-11-18 20:52:34,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 20:52:36,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:52:36,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:52:36,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:52:36,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:52:36,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:52:36,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:52:36,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:52:36,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:52:36,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:52:36,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:52:36,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:52:36,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:52:36,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:52:36,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:52:36,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:52:36,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:52:37,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:52:37,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:52:37,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:52:37,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:52:37,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:52:37,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:52:37,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:52:37,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:52:37,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:52:37,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:52:37,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:52:37,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:52:37,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:52:37,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:52:37,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:52:37,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:52:37,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:52:37,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:52:37,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:52:37,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:52:37,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:52:37,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:52:37,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:52:37,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:52:37,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-18 20:52:37,092 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:52:37,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:52:37,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:52:37,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:52:37,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:52:37,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:52:37,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:52:37,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:52:37,095 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:52:37,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:52:37,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:52:37,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:52:37,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:52:37,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:52:37,096 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:52:37,096 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:52:37,096 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:52:37,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:52:37,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:52:37,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:52:37,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:52:37,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:52:37,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:52:37,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:52:37,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:52:37,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:52:37,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:52:37,098 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:52:37,098 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:52:37,099 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:52:37,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:52:37,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:52:37,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:52:37,099 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_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-11-18 20:52:37,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:52:37,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:52:37,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:52:37,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:52:37,528 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:52:37,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-18 20:52:37,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/data/37f134ded/261d8444cd354ff5bcc92228f73f230c/FLAG1566ae1cf [2022-11-18 20:52:38,499 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:52:38,500 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-18 20:52:38,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/data/37f134ded/261d8444cd354ff5bcc92228f73f230c/FLAG1566ae1cf [2022-11-18 20:52:38,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/data/37f134ded/261d8444cd354ff5bcc92228f73f230c [2022-11-18 20:52:38,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:52:38,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:52:38,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:52:38,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:52:38,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:52:38,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:52:38" (1/1) ... [2022-11-18 20:52:38,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c50135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:38, skipping insertion in model container [2022-11-18 20:52:38,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:52:38" (1/1) ... [2022-11-18 20:52:38,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:52:39,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:52:41,642 WARN L234 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_fa4588f8-d72d-4143-b619-b4d383acb255/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-18 20:52:41,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:52:41,774 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:52:41,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:52:42,286 WARN L234 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_fa4588f8-d72d-4143-b619-b4d383acb255/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-18 20:52:42,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:52:42,311 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:52:42,787 WARN L234 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_fa4588f8-d72d-4143-b619-b4d383acb255/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-11-18 20:52:42,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:52:42,933 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:52:42,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42 WrapperNode [2022-11-18 20:52:42,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:52:42,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:52:42,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:52:42,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:52:42,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,338 INFO L138 Inliner]: procedures = 350, calls = 2627, calls flagged for inlining = 143, calls inlined = 135, statements flattened = 6427 [2022-11-18 20:52:43,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:52:43,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:52:43,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:52:43,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:52:43,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:52:43,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:52:43,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:52:43,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:52:43,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (1/1) ... [2022-11-18 20:52:43,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:52:43,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:43,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:52:43,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:52:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-11-18 20:52:43,991 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-11-18 20:52:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-11-18 20:52:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-11-18 20:52:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-11-18 20:52:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-11-18 20:52:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-18 20:52:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-11-18 20:52:43,993 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-11-18 20:52:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-18 20:52:43,993 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-18 20:52:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-18 20:52:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:52:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-11-18 20:52:43,994 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-11-18 20:52:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 20:52:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-18 20:52:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-11-18 20:52:43,994 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-11-18 20:52:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 20:52:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-18 20:52:43,995 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-18 20:52:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-11-18 20:52:43,995 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-11-18 20:52:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-11-18 20:52:43,996 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-11-18 20:52:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-11-18 20:52:43,996 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-11-18 20:52:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-18 20:52:43,996 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-18 20:52:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-18 20:52:43,997 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-18 20:52:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-18 20:52:43,998 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-18 20:52:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-11-18 20:52:43,998 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-11-18 20:52:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 20:52:43,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 20:52:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-11-18 20:52:43,999 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-11-18 20:52:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 20:52:43,999 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 20:52:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 20:52:44,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 20:52:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-18 20:52:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-18 20:52:44,000 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-18 20:52:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-11-18 20:52:44,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-11-18 20:52:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-11-18 20:52:44,002 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-11-18 20:52:44,003 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-11-18 20:52:44,003 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-11-18 20:52:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-11-18 20:52:44,004 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-11-18 20:52:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-11-18 20:52:44,005 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-11-18 20:52:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-18 20:52:44,005 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-18 20:52:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-18 20:52:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-18 20:52:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-18 20:52:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-18 20:52:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-11-18 20:52:44,007 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-11-18 20:52:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-11-18 20:52:44,007 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-11-18 20:52:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:52:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-18 20:52:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-18 20:52:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-11-18 20:52:44,009 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-11-18 20:52:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-11-18 20:52:44,009 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-11-18 20:52:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:52:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-18 20:52:44,010 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-18 20:52:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-11-18 20:52:44,010 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-11-18 20:52:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-11-18 20:52:44,010 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-11-18 20:52:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-18 20:52:44,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-18 20:52:44,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-18 20:52:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:52:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:52:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:52:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-11-18 20:52:44,012 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-11-18 20:52:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-11-18 20:52:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-11-18 20:52:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-18 20:52:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-18 20:52:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-18 20:52:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-11-18 20:52:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-11-18 20:52:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:52:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-18 20:52:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-11-18 20:52:44,016 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-11-18 20:52:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-18 20:52:44,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-18 20:52:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-18 20:52:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-18 20:52:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-18 20:52:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-18 20:52:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-18 20:52:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-18 20:52:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-11-18 20:52:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-11-18 20:52:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-11-18 20:52:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-11-18 20:52:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-11-18 20:52:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-11-18 20:52:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-18 20:52:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-18 20:52:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-18 20:52:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-18 20:52:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-18 20:52:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-18 20:52:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-11-18 20:52:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-11-18 20:52:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-18 20:52:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-18 20:52:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-11-18 20:52:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-11-18 20:52:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-11-18 20:52:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-11-18 20:52:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-11-18 20:52:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-11-18 20:52:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-11-18 20:52:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-11-18 20:52:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-18 20:52:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-18 20:52:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 20:52:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 20:52:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-18 20:52:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-11-18 20:52:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-11-18 20:52:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-18 20:52:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-18 20:52:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-11-18 20:52:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-11-18 20:52:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-18 20:52:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-18 20:52:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-11-18 20:52:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-11-18 20:52:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-11-18 20:52:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-11-18 20:52:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-11-18 20:52:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-11-18 20:52:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-11-18 20:52:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-11-18 20:52:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-18 20:52:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-18 20:52:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-18 20:52:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-18 20:52:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-11-18 20:52:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-11-18 20:52:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-18 20:52:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-18 20:52:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-18 20:52:44,038 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-18 20:52:44,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 20:52:44,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 20:52:44,038 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-11-18 20:52:44,038 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-11-18 20:52:44,038 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-18 20:52:44,039 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-18 20:52:44,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:52:44,039 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-11-18 20:52:44,039 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-11-18 20:52:44,039 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-18 20:52:44,039 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-18 20:52:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-11-18 20:52:44,040 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-11-18 20:52:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:52:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-11-18 20:52:44,040 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-11-18 20:52:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-11-18 20:52:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-11-18 20:52:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-11-18 20:52:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-11-18 20:52:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:52:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-18 20:52:44,043 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-18 20:52:44,044 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-18 20:52:44,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-18 20:52:44,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-18 20:52:44,044 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-18 20:52:44,044 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-18 20:52:44,044 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 20:52:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 20:52:44,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-18 20:52:44,045 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-11-18 20:52:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-11-18 20:52:44,045 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-18 20:52:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-18 20:52:44,046 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-18 20:52:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-18 20:52:44,046 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-11-18 20:52:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-11-18 20:52:44,046 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-18 20:52:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-18 20:52:44,047 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-18 20:52:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-18 20:52:44,047 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-11-18 20:52:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-11-18 20:52:44,047 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-18 20:52:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-18 20:52:44,047 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-18 20:52:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-18 20:52:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-11-18 20:52:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-11-18 20:52:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-11-18 20:52:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-11-18 20:52:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-18 20:52:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-18 20:52:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-11-18 20:52:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-11-18 20:52:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-11-18 20:52:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-11-18 20:52:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-11-18 20:52:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-11-18 20:52:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-18 20:52:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-18 20:52:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-18 20:52:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-18 20:52:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-11-18 20:52:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-11-18 20:52:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-18 20:52:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-11-18 20:52:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-11-18 20:52:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-11-18 20:52:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-11-18 20:52:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-18 20:52:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-18 20:52:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:52:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:52:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-18 20:52:44,057 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-18 20:52:45,129 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:52:45,133 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:53:11,756 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 [2022-11-18 20:53:11,757 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; [2022-11-18 20:53:11,757 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 [2022-11-18 20:53:11,757 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; [2022-11-18 20:53:11,757 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-11-18 20:53:11,757 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-11-18 20:53:11,757 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; [2022-11-18 20:53:11,757 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; [2022-11-18 20:53:11,758 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-11-18 20:53:11,758 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-11-18 20:53:11,758 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-11-18 20:53:11,758 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; [2022-11-18 20:53:11,758 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; [2022-11-18 20:53:11,758 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-11-18 20:53:11,758 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; [2022-11-18 20:53:11,758 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; [2022-11-18 20:53:11,759 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; [2022-11-18 20:53:11,759 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 [2022-11-18 20:53:11,759 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; [2022-11-18 20:53:11,759 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; [2022-11-18 20:53:11,759 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]; [2022-11-18 20:53:11,759 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; [2022-11-18 20:53:11,759 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; [2022-11-18 20:53:11,759 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; [2022-11-18 20:53:11,760 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; [2022-11-18 20:53:30,607 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 [2022-11-18 20:53:30,607 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; [2022-11-18 20:53:30,607 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; [2022-11-18 20:53:30,607 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; [2022-11-18 20:53:30,607 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-11-18 20:53:30,608 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-11-18 20:53:30,608 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-11-18 20:53:30,608 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 [2022-11-18 20:53:30,608 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; [2022-11-18 20:53:30,608 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; [2022-11-18 20:53:30,609 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; [2022-11-18 20:53:30,609 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; [2022-11-18 20:53:30,609 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; [2022-11-18 20:53:30,609 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; [2022-11-18 20:53:30,609 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; [2022-11-18 20:53:30,610 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; [2022-11-18 20:53:30,610 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; [2022-11-18 20:53:30,610 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-11-18 20:53:30,610 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-11-18 20:53:30,610 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]; [2022-11-18 20:53:30,610 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 [2022-11-18 20:53:30,611 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; [2022-11-18 20:53:30,611 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; [2022-11-18 20:53:30,611 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-11-18 20:53:30,611 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; [2022-11-18 20:53:40,916 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:53:40,935 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:53:40,935 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:53:40,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:40 BoogieIcfgContainer [2022-11-18 20:53:40,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:53:40,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:53:40,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:53:40,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:53:40,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:52:38" (1/3) ... [2022-11-18 20:53:40,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be9ee5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:53:40, skipping insertion in model container [2022-11-18 20:53:40,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:42" (2/3) ... [2022-11-18 20:53:40,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be9ee5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:53:40, skipping insertion in model container [2022-11-18 20:53:40,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:40" (3/3) ... [2022-11-18 20:53:40,948 INFO L112 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-11-18 20:53:40,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:53:40,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:53:41,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:53:41,058 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;@2abe013e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:53:41,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:53:41,068 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) [2022-11-18 20:53:41,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:53:41,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:41,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:41,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:41,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1066115318, now seen corresponding path program 1 times [2022-11-18 20:53:41,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:53:41,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831722279] [2022-11-18 20:53:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:41,097 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 [2022-11-18 20:53:41,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:53:41,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:53:41,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:41,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:41,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:42,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:42,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:53:42,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831722279] [2022-11-18 20:53:42,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831722279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:42,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:42,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:42,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180690969] [2022-11-18 20:53:42,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:42,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:42,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:53:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:42,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:53:42,130 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) [2022-11-18 20:53:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:42,548 INFO L93 Difference]: Finished difference Result 4386 states and 6444 transitions. [2022-11-18 20:53:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:42,552 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 [2022-11-18 20:53:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:42,594 INFO L225 Difference]: With dead ends: 4386 [2022-11-18 20:53:42,594 INFO L226 Difference]: Without dead ends: 2189 [2022-11-18 20:53:42,616 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 [2022-11-18 20:53:42,621 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 [2022-11-18 20:53:42,623 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] [2022-11-18 20:53:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2022-11-18 20:53:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2189. [2022-11-18 20:53:42,902 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) [2022-11-18 20:53:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 3167 transitions. [2022-11-18 20:53:42,926 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 3167 transitions. Word has length 16 [2022-11-18 20:53:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:42,928 INFO L495 AbstractCegarLoop]: Abstraction has 2189 states and 3167 transitions. [2022-11-18 20:53:42,928 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) [2022-11-18 20:53:42,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 3167 transitions. [2022-11-18 20:53:42,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:53:42,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:42,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:42,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:43,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:43,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1309145204, now seen corresponding path program 1 times [2022-11-18 20:53:43,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:53:43,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364562589] [2022-11-18 20:53:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:43,158 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 [2022-11-18 20:53:43,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:53:43,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:53:43,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:43,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:43,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:44,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:44,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:53:44,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364562589] [2022-11-18 20:53:44,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364562589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:44,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:44,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:44,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039209552] [2022-11-18 20:53:44,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:44,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:44,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:53:44,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:44,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:53:44,050 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) [2022-11-18 20:53:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:44,321 INFO L93 Difference]: Finished difference Result 2191 states and 3168 transitions. [2022-11-18 20:53:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:44,322 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 [2022-11-18 20:53:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:44,335 INFO L225 Difference]: With dead ends: 2191 [2022-11-18 20:53:44,336 INFO L226 Difference]: Without dead ends: 2188 [2022-11-18 20:53:44,337 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 [2022-11-18 20:53:44,339 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 [2022-11-18 20:53:44,339 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] [2022-11-18 20:53:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2022-11-18 20:53:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2188. [2022-11-18 20:53:44,478 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) [2022-11-18 20:53:44,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3165 transitions. [2022-11-18 20:53:44,500 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3165 transitions. Word has length 17 [2022-11-18 20:53:44,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:44,500 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3165 transitions. [2022-11-18 20:53:44,500 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) [2022-11-18 20:53:44,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3165 transitions. [2022-11-18 20:53:44,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:53:44,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:44,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:44,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:44,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:44,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:44,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:44,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1927782221, now seen corresponding path program 1 times [2022-11-18 20:53:44,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:53:44,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637476976] [2022-11-18 20:53:44,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:44,736 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 [2022-11-18 20:53:44,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:53:44,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:53:44,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:45,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:45,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:45,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:45,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:53:45,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637476976] [2022-11-18 20:53:45,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637476976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:45,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:45,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:45,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067958815] [2022-11-18 20:53:45,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:45,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:45,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:53:45,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:53:45,621 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) [2022-11-18 20:53:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:45,892 INFO L93 Difference]: Finished difference Result 2190 states and 3166 transitions. [2022-11-18 20:53:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:45,893 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 [2022-11-18 20:53:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:45,905 INFO L225 Difference]: With dead ends: 2190 [2022-11-18 20:53:45,905 INFO L226 Difference]: Without dead ends: 2187 [2022-11-18 20:53:45,907 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 [2022-11-18 20:53:45,910 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 [2022-11-18 20:53:45,912 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] [2022-11-18 20:53:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2022-11-18 20:53:46,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2187. [2022-11-18 20:53:46,069 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) [2022-11-18 20:53:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3163 transitions. [2022-11-18 20:53:46,090 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3163 transitions. Word has length 18 [2022-11-18 20:53:46,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:46,090 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3163 transitions. [2022-11-18 20:53:46,091 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) [2022-11-18 20:53:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3163 transitions. [2022-11-18 20:53:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:53:46,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:46,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:46,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:46,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:46,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:46,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:46,307 INFO L85 PathProgramCache]: Analyzing trace with hash -369301865, now seen corresponding path program 1 times [2022-11-18 20:53:46,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:53:46,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114801661] [2022-11-18 20:53:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:46,313 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 [2022-11-18 20:53:46,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:53:46,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:53:46,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:46,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:46,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:47,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:47,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:47,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:53:47,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114801661] [2022-11-18 20:53:47,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114801661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:47,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:47,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:47,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447328435] [2022-11-18 20:53:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:47,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:53:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:53:47,149 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) [2022-11-18 20:53:47,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:47,540 INFO L93 Difference]: Finished difference Result 4958 states and 7106 transitions. [2022-11-18 20:53:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:47,541 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 [2022-11-18 20:53:47,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:47,560 INFO L225 Difference]: With dead ends: 4958 [2022-11-18 20:53:47,560 INFO L226 Difference]: Without dead ends: 2773 [2022-11-18 20:53:47,575 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 [2022-11-18 20:53:47,577 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 [2022-11-18 20:53:47,578 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] [2022-11-18 20:53:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2022-11-18 20:53:47,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2770. [2022-11-18 20:53:47,855 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) [2022-11-18 20:53:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3908 transitions. [2022-11-18 20:53:47,873 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3908 transitions. Word has length 19 [2022-11-18 20:53:47,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:47,873 INFO L495 AbstractCegarLoop]: Abstraction has 2770 states and 3908 transitions. [2022-11-18 20:53:47,873 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) [2022-11-18 20:53:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3908 transitions. [2022-11-18 20:53:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:53:47,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:47,877 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] [2022-11-18 20:53:47,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:48,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:48,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:48,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:48,091 INFO L85 PathProgramCache]: Analyzing trace with hash 393489938, now seen corresponding path program 1 times [2022-11-18 20:53:48,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:53:48,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185896039] [2022-11-18 20:53:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:48,093 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 [2022-11-18 20:53:48,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:53:48,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:53:48,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:48,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:48,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:49,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:49,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:53:49,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185896039] [2022-11-18 20:53:49,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185896039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:49,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:49,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:49,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355152744] [2022-11-18 20:53:49,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:49,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:49,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:53:49,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:49,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:53:49,011 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) [2022-11-18 20:53:49,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:49,341 INFO L93 Difference]: Finished difference Result 5549 states and 7834 transitions. [2022-11-18 20:53:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:49,342 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 [2022-11-18 20:53:49,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:49,358 INFO L225 Difference]: With dead ends: 5549 [2022-11-18 20:53:49,358 INFO L226 Difference]: Without dead ends: 2790 [2022-11-18 20:53:49,370 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 [2022-11-18 20:53:49,371 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 [2022-11-18 20:53:49,371 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] [2022-11-18 20:53:49,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2022-11-18 20:53:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2790. [2022-11-18 20:53:49,626 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) [2022-11-18 20:53:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3937 transitions. [2022-11-18 20:53:49,647 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3937 transitions. Word has length 55 [2022-11-18 20:53:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:49,647 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 3937 transitions. [2022-11-18 20:53:49,648 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) [2022-11-18 20:53:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3937 transitions. [2022-11-18 20:53:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 20:53:49,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:49,656 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] [2022-11-18 20:53:49,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:49,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:49,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:49,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:49,873 INFO L85 PathProgramCache]: Analyzing trace with hash -742912640, now seen corresponding path program 1 times [2022-11-18 20:53:49,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:53:49,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176215529] [2022-11-18 20:53:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:49,874 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 [2022-11-18 20:53:49,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:53:49,876 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:53:49,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:50,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:53:50,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:50,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:53:50,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176215529] [2022-11-18 20:53:50,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176215529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:50,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:50,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:50,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432325952] [2022-11-18 20:53:50,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:50,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:50,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:53:50,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:53:50,730 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) [2022-11-18 20:53:51,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:51,120 INFO L93 Difference]: Finished difference Result 5571 states and 7929 transitions. [2022-11-18 20:53:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:51,121 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 [2022-11-18 20:53:51,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:51,140 INFO L225 Difference]: With dead ends: 5571 [2022-11-18 20:53:51,141 INFO L226 Difference]: Without dead ends: 2792 [2022-11-18 20:53:51,157 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 [2022-11-18 20:53:51,161 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 [2022-11-18 20:53:51,161 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] [2022-11-18 20:53:51,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2022-11-18 20:53:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2790. [2022-11-18 20:53:51,446 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) [2022-11-18 20:53:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3931 transitions. [2022-11-18 20:53:51,474 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3931 transitions. Word has length 57 [2022-11-18 20:53:51,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:51,476 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 3931 transitions. [2022-11-18 20:53:51,477 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) [2022-11-18 20:53:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3931 transitions. [2022-11-18 20:53:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 20:53:51,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:51,481 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] [2022-11-18 20:53:51,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:51,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:51,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:51,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:51,699 INFO L85 PathProgramCache]: Analyzing trace with hash -64168537, now seen corresponding path program 1 times [2022-11-18 20:53:51,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:53:51,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424695784] [2022-11-18 20:53:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:51,701 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 [2022-11-18 20:53:51,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:53:51,703 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:53:51,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:52,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:53:52,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:53:52,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:52,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:53:52,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424695784] [2022-11-18 20:53:52,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424695784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:52,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:52,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:52,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549553889] [2022-11-18 20:53:52,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:52,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:53:52,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:52,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:53:52,842 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) [2022-11-18 20:53:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:53,172 INFO L93 Difference]: Finished difference Result 4594 states and 6423 transitions. [2022-11-18 20:53:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:53,172 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 [2022-11-18 20:53:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:53,187 INFO L225 Difference]: With dead ends: 4594 [2022-11-18 20:53:53,188 INFO L226 Difference]: Without dead ends: 2316 [2022-11-18 20:53:53,200 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 [2022-11-18 20:53:53,201 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 [2022-11-18 20:53:53,201 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] [2022-11-18 20:53:53,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-11-18 20:53:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2316. [2022-11-18 20:53:53,419 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) [2022-11-18 20:53:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3189 transitions. [2022-11-18 20:53:53,430 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3189 transitions. Word has length 63 [2022-11-18 20:53:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:53,430 INFO L495 AbstractCegarLoop]: Abstraction has 2316 states and 3189 transitions. [2022-11-18 20:53:53,431 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) [2022-11-18 20:53:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3189 transitions. [2022-11-18 20:53:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 20:53:53,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:53,435 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] [2022-11-18 20:53:53,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:53,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:53:53,651 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1064965082, now seen corresponding path program 1 times [2022-11-18 20:53:53,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:53:53,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359522129] [2022-11-18 20:53:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:53,653 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 [2022-11-18 20:53:53,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:53:53,655 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:53:53,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:54:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:54:01,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:54:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:54:07,788 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-18 20:54:07,789 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:54:07,790 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 20:54:07,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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)] Ended with exit code 0 [2022-11-18 20:54:08,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:54:08,018 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:08,022 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:54:08,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:54:08 BoogieIcfgContainer [2022-11-18 20:54:08,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:54:08,114 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:54:08,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:54:08,115 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:54:08,115 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:40" (3/4) ... [2022-11-18 20:54:08,119 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 20:54:08,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:54:08,120 INFO L158 Benchmark]: Toolchain (without parser) took 89137.89ms. Allocated memory was 62.9MB in the beginning and 524.3MB in the end (delta: 461.4MB). Free memory was 41.5MB in the beginning and 331.6MB in the end (delta: -290.1MB). Peak memory consumption was 171.0MB. Max. memory is 16.1GB. [2022-11-18 20:54:08,120 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 43.6MB in the end (delta: 63.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:54:08,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3950.82ms. Allocated memory was 62.9MB in the beginning and 169.9MB in the end (delta: 107.0MB). Free memory was 41.3MB in the beginning and 83.8MB in the end (delta: -42.5MB). Peak memory consumption was 98.4MB. Max. memory is 16.1GB. [2022-11-18 20:54:08,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 404.74ms. Allocated memory is still 169.9MB. Free memory was 83.8MB in the beginning and 80.6MB in the end (delta: 3.2MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2022-11-18 20:54:08,121 INFO L158 Benchmark]: Boogie Preprocessor took 461.77ms. Allocated memory was 169.9MB in the beginning and 308.3MB in the end (delta: 138.4MB). Free memory was 80.6MB in the beginning and 203.1MB in the end (delta: -122.5MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2022-11-18 20:54:08,122 INFO L158 Benchmark]: RCFGBuilder took 57137.14ms. Allocated memory is still 308.3MB. Free memory was 203.1MB in the beginning and 111.5MB in the end (delta: 91.6MB). Peak memory consumption was 153.6MB. Max. memory is 16.1GB. [2022-11-18 20:54:08,122 INFO L158 Benchmark]: TraceAbstraction took 27171.53ms. Allocated memory was 308.3MB in the beginning and 524.3MB in the end (delta: 216.0MB). Free memory was 110.4MB in the beginning and 331.6MB in the end (delta: -221.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:54:08,122 INFO L158 Benchmark]: Witness Printer took 4.53ms. Allocated memory is still 524.3MB. Free memory is still 331.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:54:08,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 43.6MB in the end (delta: 63.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3950.82ms. Allocated memory was 62.9MB in the beginning and 169.9MB in the end (delta: 107.0MB). Free memory was 41.3MB in the beginning and 83.8MB in the end (delta: -42.5MB). Peak memory consumption was 98.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 404.74ms. Allocated memory is still 169.9MB. Free memory was 83.8MB in the beginning and 80.6MB in the end (delta: 3.2MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 461.77ms. Allocated memory was 169.9MB in the beginning and 308.3MB in the end (delta: 138.4MB). Free memory was 80.6MB in the beginning and 203.1MB in the end (delta: -122.5MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. * RCFGBuilder took 57137.14ms. Allocated memory is still 308.3MB. Free memory was 203.1MB in the beginning and 111.5MB in the end (delta: 91.6MB). Peak memory consumption was 153.6MB. Max. memory is 16.1GB. * TraceAbstraction took 27171.53ms. Allocated memory was 308.3MB in the beginning and 524.3MB in the end (delta: 216.0MB). Free memory was 110.4MB in the beginning and 331.6MB in the end (delta: -221.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.53ms. Allocated memory is still 524.3MB. Free memory is still 331.6MB. 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 ; [L11216] static int ldv_mutex_mtx ; [L9348] static int experimental_zcopytx ; [L10620] int LDV_IN_INTERRUPT ; [L11109] static int ldv_mutex_lock ; [L11323] static int ldv_mutex_mutex ; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L11002] static int ldv_mutex_cred_guard_mutex ; [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}; 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062952976}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062952976}, lock={139670323202:27180153062952976}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062952976}, lock={139670323202:27180153062952976}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062952976}, ldv_func_arg1={139670323202:27180153062952976}, 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={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062952976}, ldv_func_arg1={139670323202:27180153062952976}, 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={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062952960}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={139670323202:27180153062952960}, dev={139670323202:27180153062952960}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(ldv_mutex_mutex)=1, \result={1099547279362:140737492590596}, __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__={1099547279362:140737492590596}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={139670323202:27180153062952960}, dev={139670323202:27180153062952960}, experimental_zcopytx=0, get_current()={1099547279362:140737492590596}, 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={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062952960}, n={139670323202:27180153062952960}, rx_sock={222:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062952960}, n={139670323202:27180153062952960}, rx_sock={222:0}, tx_sock={217:0}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062952960}, rx_sock={222:0}, tx_sock={217:0}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062952960}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0, vq={139670323202:27180153062970376}] [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={139670323202:27180153062970384}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={139670323202:27180153062970384}, lock={139670323202:27180153062970384}, vhost_net_fops={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, 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={216:0}, vhost_net_misc={215:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 105 procedures, 2200 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.0s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12851 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12836 mSDsluCounter, 32313 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9925 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 22388 mSDtfsCounter, 37 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 8.2s SatisfiabilityAnalysisTime, 1.4s 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 [2022-11-18 20:54:08,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa4588f8-d72d-4143-b619-b4d383acb255/bin/uautomizer-TMbwUNV5ro/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