./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 70890f3d08defb801ef42dfcccb814d43a0397723b39cd10a6795cae91719bfb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:19:54,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:19:54,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:19:54,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:19:54,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:19:54,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:19:54,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:19:54,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:19:54,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:19:54,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:19:54,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:19:54,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:19:54,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:19:54,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:19:54,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:19:54,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:19:54,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:19:54,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:19:54,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:19:54,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:19:54,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:19:54,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:19:54,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:19:54,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:19:54,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:19:54,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:19:54,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:19:54,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:19:54,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:19:54,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:19:54,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:19:54,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:19:54,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:19:54,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:19:54,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:19:54,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:19:54,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:19:54,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:19:54,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:19:54,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:19:54,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:19:54,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:19:54,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:19:54,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:19:54,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:19:54,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:19:54,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:19:54,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:19:54,704 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:19:54,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:19:54,705 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:19:54,705 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:19:54,707 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:19:54,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:19:54,707 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:19:54,707 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:19:54,708 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:19:54,708 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:19:54,708 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:19:54,708 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:19:54,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:19:54,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:19:54,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:19:54,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:19:54,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:19:54,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:19:54,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:19:54,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:19:54,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:19:54,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:19:54,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:19:54,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:19:54,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:19:54,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:19:54,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:19:54,716 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:19:54,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:19:54,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:19:54,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:19:54,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:19:54,717 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70890f3d08defb801ef42dfcccb814d43a0397723b39cd10a6795cae91719bfb [2021-11-25 18:19:54,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:19:55,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:19:55,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:19:55,021 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:19:55,021 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:19:55,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i [2021-11-25 18:19:55,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/data/f6fddb5b7/63968194b51749109001c5cd544ce83c/FLAG5f78e10e0 [2021-11-25 18:19:56,185 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:19:56,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i [2021-11-25 18:19:56,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/data/f6fddb5b7/63968194b51749109001c5cd544ce83c/FLAG5f78e10e0 [2021-11-25 18:19:56,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/data/f6fddb5b7/63968194b51749109001c5cd544ce83c [2021-11-25 18:19:56,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:19:56,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:19:56,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:19:56,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:19:56,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:19:56,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:19:56" (1/1) ... [2021-11-25 18:19:56,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cba69c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:56, skipping insertion in model container [2021-11-25 18:19:56,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:19:56" (1/1) ... [2021-11-25 18:19:56,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:19:56,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:19:59,067 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i[288087,288100] [2021-11-25 18:19:59,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:19:59,180 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:19:59,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i[288087,288100] [2021-11-25 18:19:59,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:20:00,065 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:20:00,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00 WrapperNode [2021-11-25 18:20:00,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:20:00,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:20:00,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:20:00,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:20:00,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (1/1) ... [2021-11-25 18:20:00,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (1/1) ... [2021-11-25 18:20:00,418 INFO L137 Inliner]: procedures = 301, calls = 1795, calls flagged for inlining = 144, calls inlined = 114, statements flattened = 4213 [2021-11-25 18:20:00,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:20:00,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:20:00,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:20:00,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:20:00,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (1/1) ... [2021-11-25 18:20:00,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (1/1) ... [2021-11-25 18:20:00,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (1/1) ... [2021-11-25 18:20:00,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (1/1) ... [2021-11-25 18:20:00,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (1/1) ... [2021-11-25 18:20:00,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (1/1) ... [2021-11-25 18:20:00,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (1/1) ... [2021-11-25 18:20:00,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:20:00,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:20:00,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:20:00,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:20:00,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (1/1) ... [2021-11-25 18:20:00,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:20:00,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:20:00,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:20:00,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:20:00,833 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2021-11-25 18:20:00,833 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2021-11-25 18:20:00,833 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-25 18:20:00,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-25 18:20:00,834 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-25 18:20:00,834 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-25 18:20:00,834 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2021-11-25 18:20:00,834 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2021-11-25 18:20:00,834 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-25 18:20:00,835 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2021-11-25 18:20:00,835 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2021-11-25 18:20:00,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:20:00,835 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-25 18:20:00,835 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-25 18:20:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:20:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-25 18:20:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-25 18:20:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-25 18:20:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-25 18:20:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-11-25 18:20:00,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-11-25 18:20:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2021-11-25 18:20:00,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2021-11-25 18:20:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-11-25 18:20:00,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-11-25 18:20:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:20:00,838 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:20:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-25 18:20:00,838 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-25 18:20:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 18:20:00,839 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 18:20:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:20:00,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:20:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2021-11-25 18:20:00,840 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2021-11-25 18:20:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-25 18:20:00,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-25 18:20:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-11-25 18:20:00,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-11-25 18:20:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2021-11-25 18:20:00,841 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2021-11-25 18:20:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:20:00,841 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:20:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2021-11-25 18:20:00,842 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2021-11-25 18:20:00,842 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2021-11-25 18:20:00,842 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2021-11-25 18:20:00,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-25 18:20:00,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-25 18:20:00,844 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 18:20:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 18:20:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:20:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:20:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2021-11-25 18:20:00,846 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2021-11-25 18:20:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:20:00,846 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:20:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2021-11-25 18:20:00,847 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2021-11-25 18:20:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-11-25 18:20:00,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-11-25 18:20:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2021-11-25 18:20:00,848 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2021-11-25 18:20:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure __unit_alloc [2021-11-25 18:20:00,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __unit_alloc [2021-11-25 18:20:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:20:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:20:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:20:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-11-25 18:20:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-11-25 18:20:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:20:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-25 18:20:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-25 18:20:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 18:20:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 18:20:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-25 18:20:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-25 18:20:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:20:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:20:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2021-11-25 18:20:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2021-11-25 18:20:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 18:20:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 18:20:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-25 18:20:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-25 18:20:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:20:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:20:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-25 18:20:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-25 18:20:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-11-25 18:20:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-11-25 18:20:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure sk_run_filter [2021-11-25 18:20:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_run_filter [2021-11-25 18:20:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:20:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:20:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:20:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:20:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:20:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:20:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2021-11-25 18:20:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2021-11-25 18:20:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2021-11-25 18:20:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2021-11-25 18:20:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 18:20:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 18:20:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-25 18:20:00,862 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-25 18:20:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:20:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 18:20:00,863 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 18:20:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2021-11-25 18:20:00,864 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2021-11-25 18:20:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:20:00,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:20:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-11-25 18:20:00,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-11-25 18:20:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:20:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2021-11-25 18:20:00,871 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2021-11-25 18:20:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 18:20:00,871 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 18:20:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2021-11-25 18:20:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2021-11-25 18:20:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:20:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:20:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:20:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-25 18:20:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-25 18:20:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2021-11-25 18:20:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2021-11-25 18:20:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-11-25 18:20:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-11-25 18:20:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-11-25 18:20:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-11-25 18:20:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2021-11-25 18:20:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2021-11-25 18:20:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2021-11-25 18:20:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2021-11-25 18:20:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:20:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:20:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2021-11-25 18:20:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2021-11-25 18:20:00,883 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-25 18:20:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-25 18:20:00,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:20:00,883 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-25 18:20:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-25 18:20:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-25 18:20:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-25 18:20:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-25 18:20:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-25 18:20:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-11-25 18:20:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-11-25 18:20:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2021-11-25 18:20:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2021-11-25 18:20:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:20:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-25 18:20:00,886 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-25 18:20:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-25 18:20:00,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-25 18:20:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:20:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 18:20:00,887 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 18:20:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:20:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:20:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-11-25 18:20:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-11-25 18:20:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:20:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:20:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-25 18:20:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-25 18:20:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 18:20:00,889 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 18:20:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 18:20:00,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 18:20:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 18:20:00,890 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 18:20:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2021-11-25 18:20:00,890 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2021-11-25 18:20:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-25 18:20:00,890 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-25 18:20:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-25 18:20:00,891 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-25 18:20:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 18:20:00,891 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 18:20:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-11-25 18:20:00,892 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-11-25 18:20:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 18:20:00,892 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 18:20:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2021-11-25 18:20:00,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2021-11-25 18:20:00,893 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:20:00,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:20:00,893 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2021-11-25 18:20:00,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2021-11-25 18:20:00,893 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-11-25 18:20:00,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-11-25 18:20:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2021-11-25 18:20:00,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2021-11-25 18:20:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:20:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2021-11-25 18:20:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2021-11-25 18:20:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-25 18:20:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-25 18:20:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:20:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:20:00,896 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-25 18:20:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-25 18:20:00,896 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:20:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:20:01,772 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:20:01,780 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:20:02,550 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-25 18:20:02,550 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-25 18:20:03,588 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 18:20:03,594 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 18:20:03,597 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 18:20:04,157 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##201: assume !false; [2021-11-25 18:20:04,157 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##200: assume false; [2021-11-25 18:20:04,157 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##249: assume false; [2021-11-25 18:20:04,157 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##250: assume !false; [2021-11-25 18:20:04,158 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##207: assume !false; [2021-11-25 18:20:04,158 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##206: assume false; [2021-11-25 18:20:04,158 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##213: assume !false; [2021-11-25 18:20:04,158 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##212: assume false; [2021-11-25 18:20:04,158 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##221: assume !false; [2021-11-25 18:20:04,158 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##220: assume false; [2021-11-25 18:20:04,159 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !false; [2021-11-25 18:20:04,159 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume false; [2021-11-25 18:20:04,159 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##89: assume !false; [2021-11-25 18:20:04,159 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume false; [2021-11-25 18:20:04,160 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !false; [2021-11-25 18:20:04,160 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume false; [2021-11-25 18:20:04,160 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !false; [2021-11-25 18:20:04,160 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume false; [2021-11-25 18:20:04,160 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2021-11-25 18:20:04,160 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2021-11-25 18:20:04,160 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-11-25 18:20:04,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##144: assume !false; [2021-11-25 18:20:04,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##143: assume false; [2021-11-25 18:20:04,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##148: assume !false; [2021-11-25 18:20:04,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##147: assume false; [2021-11-25 18:20:04,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-11-25 18:20:04,171 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##154: assume !false; [2021-11-25 18:20:04,171 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume false; [2021-11-25 18:20:04,171 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2021-11-25 18:20:04,171 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2021-11-25 18:20:04,171 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2021-11-25 18:20:04,172 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2021-11-25 18:20:04,352 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 18:20:04,367 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 18:20:05,153 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6446: SUMMARY for call ppp_read_#t~ret294#1.base, ppp_read_#t~ret294#1.offset := get_current(); srcloc: null [2021-11-25 18:20:05,153 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6446-1: ppp_read_~tmp___0~15#1.base, ppp_read_~tmp___0~15#1.offset := ppp_read_#t~ret294#1.base, ppp_read_#t~ret294#1.offset;havoc ppp_read_#t~ret294#1.base, ppp_read_#t~ret294#1.offset;ppp_read_~__ptr~0#1.base, ppp_read_~__ptr~0#1.offset := ppp_read_~tmp___0~15#1.base, ppp_read_~tmp___0~15#1.offset; [2021-11-25 18:20:05,154 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6528-1: ppp_read_~tmp___6~0#1.base, ppp_read_~tmp___6~0#1.offset := ppp_read_#t~ret306#1.base, ppp_read_#t~ret306#1.offset;havoc ppp_read_#t~ret306#1.base, ppp_read_#t~ret306#1.offset;ppp_read_~__ptr___3~0#1.base, ppp_read_~__ptr___3~0#1.offset := ppp_read_~tmp___6~0#1.base, ppp_read_~tmp___6~0#1.offset; [2021-11-25 18:20:05,154 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6528: SUMMARY for call ppp_read_#t~ret306#1.base, ppp_read_#t~ret306#1.offset := get_current(); srcloc: null [2021-11-25 18:20:05,154 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##64: assume !false; [2021-11-25 18:20:05,154 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##63: assume false; [2021-11-25 18:20:05,155 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !false; [2021-11-25 18:20:05,155 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume false; [2021-11-25 18:20:05,155 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-11-25 18:20:05,155 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-11-25 18:20:05,155 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##161: assume !false; [2021-11-25 18:20:05,155 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##160: assume false; [2021-11-25 18:20:05,210 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:20:06,405 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:20:06,405 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-25 18:20:06,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:20:06 BoogieIcfgContainer [2021-11-25 18:20:06,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:20:06,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:20:06,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:20:06,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:20:06,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:19:56" (1/3) ... [2021-11-25 18:20:06,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2410fe0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:20:06, skipping insertion in model container [2021-11-25 18:20:06,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:00" (2/3) ... [2021-11-25 18:20:06,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2410fe0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:20:06, skipping insertion in model container [2021-11-25 18:20:06,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:20:06" (3/3) ... [2021-11-25 18:20:06,430 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-ppp_generic.ko.cil.out.i [2021-11-25 18:20:06,437 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:20:06,437 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:20:06,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:20:06,525 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:20:06,525 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:20:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 1129 states, 702 states have (on average 1.378917378917379) internal successors, (968), 737 states have internal predecessors, (968), 331 states have call successors, (331), 96 states have call predecessors, (331), 96 states have return successors, (331), 323 states have call predecessors, (331), 331 states have call successors, (331) [2021-11-25 18:20:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:20:06,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:06,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:20:06,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:20:06,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2080238002, now seen corresponding path program 1 times [2021-11-25 18:20:06,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:06,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773585631] [2021-11-25 18:20:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:06,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:20:07,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:20:07,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773585631] [2021-11-25 18:20:07,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773585631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:20:07,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:20:07,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:20:07,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176211020] [2021-11-25 18:20:07,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:20:07,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:20:07,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:20:07,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:20:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:20:07,253 INFO L87 Difference]: Start difference. First operand has 1129 states, 702 states have (on average 1.378917378917379) internal successors, (968), 737 states have internal predecessors, (968), 331 states have call successors, (331), 96 states have call predecessors, (331), 96 states have return successors, (331), 323 states have call predecessors, (331), 331 states have call successors, (331) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:20:09,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:20:11,738 INFO L93 Difference]: Finished difference Result 3306 states and 4828 transitions. [2021-11-25 18:20:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:20:11,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-25 18:20:11,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:20:11,807 INFO L225 Difference]: With dead ends: 3306 [2021-11-25 18:20:11,807 INFO L226 Difference]: Without dead ends: 2174 [2021-11-25 18:20:11,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:20:11,834 INFO L933 BasicCegarLoop]: 2110 mSDtfsCounter, 1541 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 3510 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:20:11,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 3510 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 18:20:11,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2021-11-25 18:20:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2158. [2021-11-25 18:20:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 1340 states have (on average 1.3656716417910448) internal successors, (1830), 1408 states have internal predecessors, (1830), 632 states have call successors, (632), 186 states have call predecessors, (632), 185 states have return successors, (633), 613 states have call predecessors, (633), 630 states have call successors, (633) [2021-11-25 18:20:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 3095 transitions. [2021-11-25 18:20:12,174 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 3095 transitions. Word has length 9 [2021-11-25 18:20:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:20:12,175 INFO L470 AbstractCegarLoop]: Abstraction has 2158 states and 3095 transitions. [2021-11-25 18:20:12,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:20:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 3095 transitions. [2021-11-25 18:20:12,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 18:20:12,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:12,193 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:20:12,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:20:12,194 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:20:12,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash -55838311, now seen corresponding path program 1 times [2021-11-25 18:20:12,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:12,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105837377] [2021-11-25 18:20:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:12,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:20:12,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:20:12,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105837377] [2021-11-25 18:20:12,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105837377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:20:12,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:20:12,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:20:12,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188387203] [2021-11-25 18:20:12,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:20:12,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:20:12,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:20:12,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:20:12,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:20:12,472 INFO L87 Difference]: Start difference. First operand 2158 states and 3095 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-25 18:20:14,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:17,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:19,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:21,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:20:21,885 INFO L93 Difference]: Finished difference Result 4749 states and 6897 transitions. [2021-11-25 18:20:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:20:21,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2021-11-25 18:20:21,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:20:21,917 INFO L225 Difference]: With dead ends: 4749 [2021-11-25 18:20:21,918 INFO L226 Difference]: Without dead ends: 2608 [2021-11-25 18:20:21,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:20:21,936 INFO L933 BasicCegarLoop]: 1469 mSDtfsCounter, 535 mSDsluCounter, 3294 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 124 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:20:21,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 4344 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 807 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2021-11-25 18:20:22,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-11-25 18:20:22,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2561. [2021-11-25 18:20:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2561 states, 1635 states have (on average 1.384097859327217) internal successors, (2263), 1707 states have internal predecessors, (2263), 740 states have call successors, (740), 186 states have call predecessors, (740), 185 states have return successors, (743), 721 states have call predecessors, (743), 738 states have call successors, (743) [2021-11-25 18:20:22,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 3746 transitions. [2021-11-25 18:20:22,275 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 3746 transitions. Word has length 60 [2021-11-25 18:20:22,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:20:22,276 INFO L470 AbstractCegarLoop]: Abstraction has 2561 states and 3746 transitions. [2021-11-25 18:20:22,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-25 18:20:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 3746 transitions. [2021-11-25 18:20:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 18:20:22,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:22,288 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:20:22,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:20:22,291 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:20:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1437736819, now seen corresponding path program 1 times [2021-11-25 18:20:22,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:22,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725539057] [2021-11-25 18:20:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:22,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:21:00,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:00,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725539057] [2021-11-25 18:21:00,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725539057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:00,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:00,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:00,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181076299] [2021-11-25 18:21:00,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:00,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:00,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:00,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:00,957 INFO L87 Difference]: Start difference. First operand 2561 states and 3746 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 18:21:03,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:05,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:07,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:08,722 INFO L93 Difference]: Finished difference Result 6323 states and 9285 transitions. [2021-11-25 18:21:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:08,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2021-11-25 18:21:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:08,776 INFO L225 Difference]: With dead ends: 6323 [2021-11-25 18:21:08,776 INFO L226 Difference]: Without dead ends: 4995 [2021-11-25 18:21:08,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:08,790 INFO L933 BasicCegarLoop]: 1741 mSDtfsCounter, 1466 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:08,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 3142 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 393 Invalid, 3 Unknown, 0 Unchecked, 7.5s Time] [2021-11-25 18:21:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2021-11-25 18:21:09,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4978. [2021-11-25 18:21:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4978 states, 3185 states have (on average 1.3843014128728415) internal successors, (4409), 3318 states have internal predecessors, (4409), 1431 states have call successors, (1431), 362 states have call predecessors, (1431), 361 states have return successors, (1460), 1399 states have call predecessors, (1460), 1429 states have call successors, (1460) [2021-11-25 18:21:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4978 states to 4978 states and 7300 transitions. [2021-11-25 18:21:09,168 INFO L78 Accepts]: Start accepts. Automaton has 4978 states and 7300 transitions. Word has length 58 [2021-11-25 18:21:09,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:09,170 INFO L470 AbstractCegarLoop]: Abstraction has 4978 states and 7300 transitions. [2021-11-25 18:21:09,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 18:21:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4978 states and 7300 transitions. [2021-11-25 18:21:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:21:09,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:09,182 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:09,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:21:09,182 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:09,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:09,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1845820248, now seen corresponding path program 1 times [2021-11-25 18:21:09,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:09,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180849369] [2021-11-25 18:21:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:09,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 18:21:09,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:09,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180849369] [2021-11-25 18:21:09,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180849369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:09,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:09,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:21:09,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572252841] [2021-11-25 18:21:09,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:09,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:21:09,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:21:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:21:09,729 INFO L87 Difference]: Start difference. First operand 4978 states and 7300 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-25 18:21:12,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:14,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:17,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:18,329 INFO L93 Difference]: Finished difference Result 9941 states and 14580 transitions. [2021-11-25 18:21:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:21:18,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 73 [2021-11-25 18:21:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:18,377 INFO L225 Difference]: With dead ends: 9941 [2021-11-25 18:21:18,377 INFO L226 Difference]: Without dead ends: 4978 [2021-11-25 18:21:18,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:21:18,413 INFO L933 BasicCegarLoop]: 1414 mSDtfsCounter, 3 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:18,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5650 Invalid, 787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 783 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2021-11-25 18:21:18,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4978 states. [2021-11-25 18:21:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4978 to 4978. [2021-11-25 18:21:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4978 states, 3185 states have (on average 1.383673469387755) internal successors, (4407), 3316 states have internal predecessors, (4407), 1431 states have call successors, (1431), 362 states have call predecessors, (1431), 361 states have return successors, (1460), 1399 states have call predecessors, (1460), 1429 states have call successors, (1460) [2021-11-25 18:21:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4978 states to 4978 states and 7298 transitions. [2021-11-25 18:21:18,811 INFO L78 Accepts]: Start accepts. Automaton has 4978 states and 7298 transitions. Word has length 73 [2021-11-25 18:21:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:18,814 INFO L470 AbstractCegarLoop]: Abstraction has 4978 states and 7298 transitions. [2021-11-25 18:21:18,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-25 18:21:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4978 states and 7298 transitions. [2021-11-25 18:21:18,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 18:21:18,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:18,825 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:18,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:21:18,825 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:18,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:18,827 INFO L85 PathProgramCache]: Analyzing trace with hash -231130744, now seen corresponding path program 1 times [2021-11-25 18:21:18,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:18,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721704749] [2021-11-25 18:21:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:18,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:21:19,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:19,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721704749] [2021-11-25 18:21:19,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721704749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:19,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:19,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:21:19,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49613854] [2021-11-25 18:21:19,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:19,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:21:19,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:19,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:21:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:21:19,196 INFO L87 Difference]: Start difference. First operand 4978 states and 7298 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 18:21:20,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:23,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:25,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:28,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:30,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:32,798 INFO L93 Difference]: Finished difference Result 9973 states and 14727 transitions. [2021-11-25 18:21:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:21:32,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2021-11-25 18:21:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:32,856 INFO L225 Difference]: With dead ends: 9973 [2021-11-25 18:21:32,856 INFO L226 Difference]: Without dead ends: 5014 [2021-11-25 18:21:32,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:21:32,905 INFO L933 BasicCegarLoop]: 1414 mSDtfsCounter, 6 mSDsluCounter, 4454 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:32,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5385 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1060 Invalid, 4 Unknown, 0 Unchecked, 13.3s Time] [2021-11-25 18:21:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5014 states. [2021-11-25 18:21:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5014 to 4994. [2021-11-25 18:21:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4994 states, 3197 states have (on average 1.3834845167344385) internal successors, (4423), 3328 states have internal predecessors, (4423), 1435 states have call successors, (1435), 362 states have call predecessors, (1435), 361 states have return successors, (1464), 1403 states have call predecessors, (1464), 1433 states have call successors, (1464) [2021-11-25 18:21:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4994 states to 4994 states and 7322 transitions. [2021-11-25 18:21:33,351 INFO L78 Accepts]: Start accepts. Automaton has 4994 states and 7322 transitions. Word has length 86 [2021-11-25 18:21:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:33,352 INFO L470 AbstractCegarLoop]: Abstraction has 4994 states and 7322 transitions. [2021-11-25 18:21:33,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 18:21:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4994 states and 7322 transitions. [2021-11-25 18:21:33,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-25 18:21:33,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:33,362 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:33,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:21:33,363 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:33,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:33,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1121422456, now seen corresponding path program 1 times [2021-11-25 18:21:33,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:33,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421006041] [2021-11-25 18:21:33,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:33,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:21:33,639 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:21:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:21:33,994 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:21:33,994 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:21:33,995 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:21:33,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:21:34,002 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-25 18:21:34,006 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:21:34,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:21:34 BoogieIcfgContainer [2021-11-25 18:21:34,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:21:34,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:21:34,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:21:34,241 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:21:34,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:20:06" (3/4) ... [2021-11-25 18:21:34,245 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:21:34,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:21:34,246 INFO L158 Benchmark]: Toolchain (without parser) took 97691.20ms. Allocated memory was 125.8MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 81.6MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 671.3MB. Max. memory is 16.1GB. [2021-11-25 18:21:34,247 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory was 40.4MB in the beginning and 40.4MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:21:34,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3507.01ms. Allocated memory was 125.8MB in the beginning and 249.6MB in the end (delta: 123.7MB). Free memory was 81.3MB in the beginning and 189.1MB in the end (delta: -107.8MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2021-11-25 18:21:34,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 344.31ms. Allocated memory is still 249.6MB. Free memory was 189.1MB in the beginning and 166.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-25 18:21:34,248 INFO L158 Benchmark]: Boogie Preprocessor took 313.95ms. Allocated memory is still 249.6MB. Free memory was 166.0MB in the beginning and 140.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-25 18:21:34,249 INFO L158 Benchmark]: RCFGBuilder took 5680.23ms. Allocated memory was 249.6MB in the beginning and 444.6MB in the end (delta: 195.0MB). Free memory was 140.8MB in the beginning and 142.3MB in the end (delta: -1.5MB). Peak memory consumption was 193.6MB. Max. memory is 16.1GB. [2021-11-25 18:21:34,249 INFO L158 Benchmark]: TraceAbstraction took 87820.85ms. Allocated memory was 444.6MB in the beginning and 2.4GB in the end (delta: 1.9GB). Free memory was 141.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 413.6MB. Max. memory is 16.1GB. [2021-11-25 18:21:34,250 INFO L158 Benchmark]: Witness Printer took 4.62ms. Allocated memory is still 2.4GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 891.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:21:34,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory was 40.4MB in the beginning and 40.4MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3507.01ms. Allocated memory was 125.8MB in the beginning and 249.6MB in the end (delta: 123.7MB). Free memory was 81.3MB in the beginning and 189.1MB in the end (delta: -107.8MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 344.31ms. Allocated memory is still 249.6MB. Free memory was 189.1MB in the beginning and 166.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 313.95ms. Allocated memory is still 249.6MB. Free memory was 166.0MB in the beginning and 140.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * RCFGBuilder took 5680.23ms. Allocated memory was 249.6MB in the beginning and 444.6MB in the end (delta: 195.0MB). Free memory was 140.8MB in the beginning and 142.3MB in the end (delta: -1.5MB). Peak memory consumption was 193.6MB. Max. memory is 16.1GB. * TraceAbstraction took 87820.85ms. Allocated memory was 444.6MB in the beginning and 2.4GB in the end (delta: 1.9GB). Free memory was 141.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 413.6MB. Max. memory is 16.1GB. * Witness Printer took 4.62ms. Allocated memory is still 2.4GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 891.1kB). There was no memory consumed. Max. memory is 16.1GB. * 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: 10809]: 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 6167, overapproximation of bitwiseOr at line 7938, overapproximation of bitwiseAnd at line 7939. Possible FailurePath: [L6164-L6171] static struct mutex ppp_mutex = {{1}, {{{{0U}, 3735899821U, 4294967295U, (void *)0x0fffffffffffffffUL, {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, "ppp_mutex.wait_lock", 0, 0UL}}}}, {& ppp_mutex.wait_list, & ppp_mutex.wait_list}, (struct task_struct *)0, (char const *)0, (void *)(& ppp_mutex), {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, "ppp_mutex", 0, 0UL}}; [L6172] static atomic_t ppp_unit_count = {0}; [L6173] static atomic_t channel_count = {0}; [L6174] static int ppp_net_id ; [L6207] static struct class *ppp_class ; [L6268-L6269] static int const npindex_to_proto[6U] = { (int const )33, (int const )87, (int const )43, (int const )41, (int const )641, (int const )643}; [L6313-L6314] static int const npindex_to_ethertype[6U] = { (int const )2048, (int const )34525, (int const )33079, (int const )16, (int const )34887, (int const )34888}; [L7621-L7646] static struct file_operations const ppp_device_fops = {& __this_module, & noop_llseek, & ppp_read, & ppp_write, (ssize_t (*)(struct kiocb * , struct iovec const * , unsigned long , loff_t ))0, (ssize_t (*)(struct kiocb * , struct iovec const * , unsigned long , loff_t ))0, (int (*)(struct file * , void * , int (*)(void * , char const * , int , loff_t , u64 , unsigned int ) ))0, & ppp_poll, & ppp_ioctl, (long (*)(struct file * , unsigned int , unsigned long ))0, (int (*)(struct file * , struct vm_area_struct * ))0, & ppp_open, (int (*)(struct file * , fl_owner_t ))0, & ppp_release, (int (*)(struct file * , int ))0, (int (*)(struct kiocb * , int ))0, (int (*)(int , struct file * , int ))0, (int (*)(struct file * , int , struct file_lock * ))0, (ssize_t (*)(struct file * , struct page * , int , size_t , loff_t * , int ))0, (unsigned long (*)(struct file * , unsigned long , unsigned long , unsigned long , unsigned long ))0, (int (*)(int ))0, (int (*)(struct file * , int , struct file_lock * ))0, (ssize_t (*)(struct pipe_inode_info * , struct file * , loff_t * , size_t , unsigned int ))0, (ssize_t (*)(struct file * , loff_t * , struct pipe_inode_info * , size_t , unsigned int ))0, (int (*)(struct file * , long , struct file_lock ** ))0, (long (*)(struct file * , int , loff_t , loff_t ))0}; [L7679-L7680] static struct pernet_operations ppp_net_ops = {{(struct list_head *)0, (struct list_head *)0}, & ppp_init_net, & ppp_exit_net, (void (*)(struct list_head * ))0, & ppp_net_id, 376UL}; [L7891-L7927] static struct net_device_ops const ppp_netdev_ops = {(int (*)(struct net_device * ))0, (void (*)(struct net_device * ))0, (int (*)(struct net_device * ))0, (int (*)(struct net_device * ))0, & ppp_start_xmit, (u16 (*)(struct net_device * , struct sk_buff * ))0, (void (*)(struct net_device * , int ))0, (void (*)(struct net_device * ))0, (void (*)(struct net_device * ))0, (int (*)(struct net_device * , void * ))0, (int (*)(struct net_device * ))0, & ppp_net_ioctl, (int (*)(struct net_device * , struct ifmap * ))0, (int (*)(struct net_device * , int ))0, (int (*)(struct net_device * , struct neigh_parms * ))0, (void (*)(struct net_device * ))0, (struct rtnl_link_stats64 *(*)(struct net_device * , struct rtnl_link_stats64 * ))0, (struct net_device_stats *(*)(struct net_device * ))0, (void (*)(struct net_device * , struct vlan_group * ))0, (void (*)(struct net_device * , unsigned short ))0, (void (*)(struct net_device * , unsigned short ))0, (void (*)(struct net_device * ))0, (int (*)(struct net_device * , struct netpoll_info * ))0, (void (*)(struct net_device * ))0, (int (*)(struct net_device * , int , u8 * ))0, (int (*)(struct net_device * , int , u16 , u8 ))0, (int (*)(struct net_device * , int , int ))0, (int (*)(struct net_device * , int , struct ifla_vf_info * ))0, (int (*)(struct net_device * , int , struct nlattr ** ))0, (int (*)(struct net_device * , int , struct sk_buff * ))0, (int (*)(struct net_device * , u8 ))0, (int (*)(struct net_device * ))0, (int (*)(struct net_device * ))0, (int (*)(struct net_device * , u16 , struct scatterlist * , unsigned int ))0, (int (*)(struct net_device * , u16 ))0, (int (*)(struct net_device * , u16 , struct scatterlist * , unsigned int ))0, (int (*)(struct net_device * , u64 * , int ))0, (int (*)(struct net_device * , struct sk_buff const * , u16 , u32 ))0, (int (*)(struct net_device * , struct net_device * ))0, (int (*)(struct net_device * , struct net_device * ))0, (u32 (*)(struct net_device * , u32 ))0, (int (*)(struct net_device * , u32 ))0}; [L8312] static bool mp_protocol_compress = (bool )1; [L9989] static struct list_head compressor_list = {& compressor_list, & compressor_list}; [L9990-L9994] static spinlock_t compressor_list_lock = {{{{0U}, 3735899821U, 4294967295U, (void *)0x0fffffffffffffffUL, {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, "compressor_list_lock", 0, 0UL}}}}; [L10620] int LDV_IN_INTERRUPT ; [L10813] int ldv_module_refcounter = 1; [L10622] struct file *var_group1 ; [L10623] char *var_ppp_read_5_p1 ; [L10624] size_t var_ppp_read_5_p2 ; [L10625] loff_t *var_ppp_read_5_p3 ; [L10626] ssize_t res_ppp_read_5 ; [L10627] char const *var_ppp_write_6_p1 ; [L10628] size_t var_ppp_write_6_p2 ; [L10629] loff_t *var_ppp_write_6_p3 ; [L10630] ssize_t res_ppp_write_6 ; [L10631] poll_table *var_ppp_poll_7_p1 ; [L10632] unsigned int var_ppp_ioctl_9_p1 ; [L10633] unsigned long var_ppp_ioctl_9_p2 ; [L10634] struct inode *var_group2 ; [L10635] int res_ppp_open_3 ; [L10636] struct net *var_group3 ; [L10637] struct sk_buff *var_group4 ; [L10638] struct net_device *var_group5 ; [L10639] struct ifreq *var_group6 ; [L10640] int var_ppp_net_ioctl_15_p2 ; [L10641] int ldv_s_ppp_device_fops_file_operations ; [L10642] int tmp ; [L10643] int tmp___0 ; [L10644] int tmp___1 ; [L10647] ldv_s_ppp_device_fops_file_operations = 0 [L10648] LDV_IN_INTERRUPT = 1 [L10649] FCALL ldv_initialize() [L10650] CALL, EXPR ppp_init() [L7682] int err ; [L7683] struct lock_class_key __key ; [L7684] struct class *tmp ; [L7685] long tmp___0 ; [L7686] long tmp___1 ; [L7690] CALL, EXPR register_pernet_device(& ppp_net_ops) [L11180] return __VERIFIER_nondet_int(); [L7690] RET, EXPR register_pernet_device(& ppp_net_ops) [L7690] err = register_pernet_device(& ppp_net_ops) [L7692] COND FALSE !(err != 0) [L7700] CALL, EXPR register_chrdev(108U, "ppp", & ppp_device_fops) [L5879] int tmp ; [L5882] CALL, EXPR __register_chrdev(major, 0U, 256U, name, fops) [L11003] return __VERIFIER_nondet_int(); [L5882] RET, EXPR __register_chrdev(major, 0U, 256U, name, fops) [L5882] tmp = __register_chrdev(major, 0U, 256U, name, fops) [L5884] return (tmp); [L7700] RET, EXPR register_chrdev(108U, "ppp", & ppp_device_fops) [L7700] err = register_chrdev(108U, "ppp", & ppp_device_fops) [L7702] COND FALSE !(err != 0) [L7710] CALL, EXPR __class_create(& __this_module, "ppp", & __key) [L10972] CALL, EXPR ldv_malloc(sizeof(struct class)) VAL [__this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10957] COND TRUE __VERIFIER_nondet_bool() [L10957] return 0; VAL [\old(size)=128, \result={0:0}, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, size=128] [L10972] RET, EXPR ldv_malloc(sizeof(struct class)) VAL [__this_module={18446744073709551634:18446744073709551621}, arg0={18446744073709551634:18446744073709551621}, arg0={18446744073709551634:18446744073709551621}, arg1={20:0}, arg1={20:0}, arg2={73:0}, arg2={73:0}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct class))={0:0}, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10972] return ldv_malloc(sizeof(struct class)); [L7710] RET, EXPR __class_create(& __this_module, "ppp", & __key) [L7710] tmp = __class_create(& __this_module, "ppp", & __key) [L7711] ppp_class = tmp VAL [__key={73:0}, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp={0:0}] [L7712] CALL, EXPR IS_ERR((void const *)ppp_class) VAL [__this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, ptr={0:0}] [L5217] long tmp ; [L5220] tmp = __builtin_expect((long )((unsigned long )ptr > 0x0ffffffffffff000UL), 0L) [L5222] return (tmp); [L7712] RET, EXPR IS_ERR((void const *)ppp_class) VAL [__key={73:0}, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=0, IS_ERR((void const *)ppp_class)=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp={0:0}] [L7712] tmp___1 = IS_ERR((void const *)ppp_class) [L7714] COND FALSE !(tmp___1 != 0L) [L7725] return (0); [L7725] return (0); VAL [\result=0, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp={0:0}, tmp___1=0] [L10650] RET, EXPR ppp_init() [L10650] tmp = ppp_init() [L10652] COND FALSE !(tmp != 0) VAL [__this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0] [L10784] tmp___1 = __VERIFIER_nondet_int() [L10786] COND TRUE tmp___1 != 0 VAL [__this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___1=1] [L10659] tmp___0 = __VERIFIER_nondet_int() [L10661] COND FALSE !(tmp___0 == 0) VAL [__this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=1] [L10664] COND FALSE !(tmp___0 == 1) VAL [__this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=1] [L10667] COND FALSE !(tmp___0 == 2) VAL [__this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=1] [L10670] COND FALSE !(tmp___0 == 3) VAL [__this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=1] [L10673] COND FALSE !(tmp___0 == 4) VAL [__this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=1] [L10676] COND TRUE tmp___0 == 5 VAL [__this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=1] [L10753] CALL ppp_ioctl(var_group1, var_ppp_ioctl_9_p1, var_ppp_ioctl_9_p2) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6746] struct ppp_file *pf ; [L6747] struct ppp *ppp ; [L6748] int err ; [L6749] int val ; [L6750] int val2 ; [L6751] int i ; [L6752] struct ppp_idle idle ; [L6753] struct npioctl npi ; [L6754] int unit ; [L6755] int cflags ; [L6756] struct slcompress *vj ; [L6757] void *argp ; [L6758] int *p ; [L6759] struct task_struct *tmp ; [L6760] int tmp___0 ; [L6761] struct ppp_file const *__mptr ; [L6762] long tmp___1 ; [L6763] long tmp___2 ; [L6764] struct channel *pch ; [L6765] struct ppp_channel *chan ; [L6766] struct ppp_file const *__mptr___0 ; [L6767] int __ret_gu ; [L6768] unsigned long __val_gu ; [L6769] struct ppp_file const *__mptr___1 ; [L6770] int __ret_gu___0 ; [L6771] unsigned long __val_gu___0 ; [L6772] int __ret_gu___1 ; [L6773] unsigned long __val_gu___1 ; [L6774] int __ret_pu ; [L6775] int __pu_val ; [L6776] int __ret_pu___0 ; [L6777] int __pu_val___0 ; [L6778] int __ret_gu___2 ; [L6779] unsigned long __val_gu___2 ; [L6780] int __ret_pu___1 ; [L6781] int __pu_val___1 ; [L6782] int tmp___3 ; [L6783] int __ret_gu___3 ; [L6784] unsigned long __val_gu___3 ; [L6785] unsigned long tmp___4 ; [L6786] int tmp___5 ; [L6787] struct sock_filter *code ; [L6788] struct sock_filter *code___0 ; [L6789] int __ret_gu___4 ; [L6790] unsigned long __val_gu___4 ; [L6792] EXPR file->private_data [L6792] pf = (struct ppp_file *)file->private_data [L6793] err = -14 [L6794] argp = (void *)arg [L6795] p = (int *)argp VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6796] COND FALSE !((unsigned long )pf == (unsigned long )((struct ppp_file *)0)) VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6804] COND FALSE !(cmd == 1074033724U) [L6840] EXPR pf->kind VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, pf->kind=-4294967295, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6840] COND FALSE !((unsigned int )pf->kind == 2U) [L6923] EXPR pf->kind VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, pf->kind=-4294967295, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6923] COND FALSE !((unsigned int )pf->kind != 1U) [L6931] FCALL mutex_lock_nested(& ppp_mutex, 0U) VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6932] __mptr___1 = (struct ppp_file const *)pf [L6933] ppp = (struct ppp *)__mptr___1 VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __this_module={18446744073709551634:18446744073709551621}, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6935] COND FALSE !((int )cmd == 1074033746) VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __this_module={18446744073709551634:18446744073709551621}, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6938] COND TRUE (int )cmd == 1074033753 VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __this_module={18446744073709551634:18446744073709551621}, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L7014] FCALL might_fault() VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __this_module={18446744073709551634:18446744073709551621}, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L7037] val = (int )__val_gu___1 VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __this_module={18446744073709551634:18446744073709551621}, __val_gu___1=4294967292, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, val=-4] [L7038] COND FALSE !(__ret_gu___1 != 0) VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __ret_gu___1=0, __this_module={18446744073709551634:18446744073709551621}, __val_gu___1=4294967292, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, val=-4] [L7043] CALL spin_lock_bh(& ppp->wlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5320] FCALL _raw_spin_lock_bh(& lock->ldv_6060.rlock) [L7043] RET spin_lock_bh(& ppp->wlock) VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __ret_gu___1=0, __this_module={18446744073709551634:18446744073709551621}, __val_gu___1=4294967292, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, val=-4] [L7044] CALL spin_lock_bh(& ppp->rlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5320] FCALL _raw_spin_lock_bh(& lock->ldv_6060.rlock) [L7044] RET spin_lock_bh(& ppp->rlock) VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __ret_gu___1=0, __this_module={18446744073709551634:18446744073709551621}, __val_gu___1=4294967292, arg=18446744073709551613, argp={0:-3}, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, val=-4] [L7045] EXPR ppp->flags [L7045] cflags = (int )(ppp->flags & (unsigned int )(~ val)) [L7046] ppp->flags = (unsigned int )val & 4214508U VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __ret_gu___1=0, __this_module={18446744073709551634:18446744073709551621}, __val_gu___1=4294967292, arg=18446744073709551613, argp={0:-3}, cflags=-5, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, val=-4] [L7047] CALL spin_unlock_bh(& ppp->rlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5338] FCALL _raw_spin_unlock_bh(& lock->ldv_6060.rlock) [L7047] RET spin_unlock_bh(& ppp->rlock) VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __ret_gu___1=0, __this_module={18446744073709551634:18446744073709551621}, __val_gu___1=4294967292, arg=18446744073709551613, argp={0:-3}, cflags=-5, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, val=-4] [L7048] CALL spin_unlock_bh(& ppp->wlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5338] FCALL _raw_spin_unlock_bh(& lock->ldv_6060.rlock) [L7048] RET spin_unlock_bh(& ppp->wlock) VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __ret_gu___1=0, __this_module={18446744073709551634:18446744073709551621}, __val_gu___1=4294967292, arg=18446744073709551613, argp={0:-3}, cflags=-5, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, val=-4] [L7050] COND TRUE (cflags & 64) != 0 VAL [\old(arg)=18446744073709551613, \old(cmd)=1074033753, \old(ldv_module_refcounter)=1, __mptr___1={377:-376}, __ret_gu___1=0, __this_module={18446744073709551634:18446744073709551621}, __val_gu___1=4294967292, arg=18446744073709551613, argp={0:-3}, cflags=-5, channel_count={62:0}, cmd=1074033753, code={77:0}, code___0={71:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=-14, file={18446744073709551650:-2}, file={18446744073709551650:-2}, idle={75:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={74:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:-3}, pf={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, val=-4] [L7052] CALL ppp_ccp_closed(ppp) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L9952] void *xstate ; [L9953] void *rstate ; [L9954] struct compressor *xcomp ; [L9955] struct compressor *rcomp ; VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L9958] CALL spin_lock_bh(& ppp->wlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5320] FCALL _raw_spin_lock_bh(& lock->ldv_6060.rlock) [L9958] RET spin_lock_bh(& ppp->wlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L9959] CALL spin_lock_bh(& ppp->rlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5320] FCALL _raw_spin_lock_bh(& lock->ldv_6060.rlock) [L9959] RET spin_lock_bh(& ppp->rlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L9960] EXPR ppp->flags [L9960] ppp->flags = ppp->flags & 4294967103U [L9961] ppp->xstate = 0U [L9962] EXPR ppp->xcomp [L9962] xcomp = ppp->xcomp [L9963] EXPR ppp->xc_state [L9963] xstate = ppp->xc_state [L9964] ppp->xc_state = (void *)0 [L9965] ppp->rstate = 0U [L9966] EXPR ppp->rcomp [L9966] rcomp = ppp->rcomp [L9967] EXPR ppp->rc_state [L9967] rstate = ppp->rc_state [L9968] ppp->rc_state = (void *)0 VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, rcomp={18446744073709551623:18446744073709551654}, rstate={18446744073709551626:18446744073709551641}, xcomp={18446744073709551617:-18}, xstate={18446744073709551617:0}] [L9969] CALL spin_unlock_bh(& ppp->rlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5338] FCALL _raw_spin_unlock_bh(& lock->ldv_6060.rlock) [L9969] RET spin_unlock_bh(& ppp->rlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, rcomp={18446744073709551623:18446744073709551654}, rstate={18446744073709551626:18446744073709551641}, xcomp={18446744073709551617:-18}, xstate={18446744073709551617:0}] [L9970] CALL spin_unlock_bh(& ppp->wlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5338] FCALL _raw_spin_unlock_bh(& lock->ldv_6060.rlock) [L9970] RET spin_unlock_bh(& ppp->wlock) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, rcomp={18446744073709551623:18446744073709551654}, rstate={18446744073709551626:18446744073709551641}, xcomp={18446744073709551617:-18}, xstate={18446744073709551617:0}] [L9972] COND TRUE (unsigned long )xstate != (unsigned long )((void *)0) [L9974] EXPR xcomp->comp_free VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, rcomp={18446744073709551623:18446744073709551654}, rstate={18446744073709551626:18446744073709551641}, xcomp={18446744073709551617:-18}, xcomp->comp_free={-1:12}, xstate={18446744073709551617:0}] [L9974] CALL (*(xcomp->comp_free))(xstate) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L7931] dev->netdev_ops = & ppp_netdev_ops [L7932] dev->hard_header_len = (unsigned short)4 [L7933] dev->mtu = 1500U [L7934] dev->addr_len = (unsigned char)0 [L7935] dev->tx_queue_len = 3UL [L7936] dev->type = (unsigned short)512 [L7937] dev->flags = 4240U [L7938] EXPR dev->features [L7938] dev->features = dev->features | 8192U [L7939] EXPR dev->priv_flags [L7939] dev->priv_flags = dev->priv_flags & 4294966271U [L9974] RET (*(xcomp->comp_free))(xstate) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={377:-376}, ppp={377:-376}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, rcomp={18446744073709551623:18446744073709551654}, rstate={18446744073709551626:18446744073709551641}, xcomp={18446744073709551617:-18}, xcomp->comp_free={-1:12}, xstate={18446744073709551617:0}] [L9975] EXPR xcomp->owner [L9975] CALL ldv_module_put_5(xcomp->owner) [L10926] CALL ldv_module_put(ldv_func_arg1) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, module={79:-78}, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10845] COND TRUE (unsigned long )module != (unsigned long )((struct module *)0) VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, module={79:-78}, module={79:-78}, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10846] COND TRUE ldv_module_refcounter <= 1 VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, module={79:-78}, module={79:-78}, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10848] CALL ldv_blast_assert() VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10809] reach_error() VAL [\old(ldv_module_refcounter)=1, __this_module={18446744073709551634:18446744073709551621}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 97 procedures, 1129 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 87.5s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 44.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 14 mSolverCounterUnknown, 3612 SdHoareTripleChecker+Valid, 42.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3551 mSDsluCounter, 22031 SdHoareTripleChecker+Invalid, 40.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15741 mSDsCounter, 129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3490 IncrementalHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 129 mSolverCounterUnsat, 8148 mSDtfsCounter, 3490 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4994occurred in iteration=5, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 100 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 28.2s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 538 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 34/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 18:21:34,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 70890f3d08defb801ef42dfcccb814d43a0397723b39cd10a6795cae91719bfb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:21:37,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:21:37,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:21:37,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:21:37,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:21:37,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:21:37,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:21:37,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:21:37,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:21:37,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:21:37,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:21:37,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:21:37,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:21:37,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:21:37,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:21:37,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:21:37,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:21:37,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:21:37,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:21:37,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:21:37,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:21:37,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:21:37,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:21:37,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:21:37,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:21:37,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:21:37,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:21:37,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:21:37,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:21:37,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:21:37,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:21:37,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:21:37,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:21:37,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:21:37,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:21:37,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:21:37,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:21:37,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:21:37,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:21:37,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:21:37,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:21:37,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-25 18:21:37,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:21:37,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:21:37,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:21:37,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:21:37,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:21:37,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:21:37,341 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:21:37,341 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:21:37,341 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:21:37,342 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:21:37,342 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:21:37,342 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:21:37,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:21:37,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:21:37,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:21:37,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:21:37,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:21:37,344 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:21:37,344 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:21:37,344 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:21:37,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:21:37,344 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:21:37,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:21:37,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:21:37,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:21:37,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:21:37,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:37,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:21:37,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:21:37,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:21:37,346 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:21:37,346 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:21:37,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:21:37,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:21:37,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:21:37,346 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_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70890f3d08defb801ef42dfcccb814d43a0397723b39cd10a6795cae91719bfb [2021-11-25 18:21:37,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:21:37,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:21:37,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:21:37,864 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:21:37,865 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:21:37,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i [2021-11-25 18:21:37,965 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/data/9bfc9b202/77afe061978844a7a7369d51f0976d82/FLAG30e3ba07b [2021-11-25 18:21:39,117 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:21:39,118 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i [2021-11-25 18:21:39,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/data/9bfc9b202/77afe061978844a7a7369d51f0976d82/FLAG30e3ba07b [2021-11-25 18:21:39,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/data/9bfc9b202/77afe061978844a7a7369d51f0976d82 [2021-11-25 18:21:39,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:21:39,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:21:39,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:21:39,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:21:39,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:21:39,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:39" (1/1) ... [2021-11-25 18:21:39,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb1aeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:39, skipping insertion in model container [2021-11-25 18:21:39,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:39" (1/1) ... [2021-11-25 18:21:39,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:21:39,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:21:41,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i[288087,288100] [2021-11-25 18:21:42,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:42,119 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 18:21:42,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:21:42,716 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i[288087,288100] [2021-11-25 18:21:42,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:42,756 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:21:43,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-ppp_generic.ko.cil.out.i[288087,288100] [2021-11-25 18:21:43,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:43,525 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:21:43,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43 WrapperNode [2021-11-25 18:21:43,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:21:43,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:21:43,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:21:43,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:21:43,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (1/1) ... [2021-11-25 18:21:43,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (1/1) ... [2021-11-25 18:21:43,883 INFO L137 Inliner]: procedures = 316, calls = 1793, calls flagged for inlining = 147, calls inlined = 117, statements flattened = 4122 [2021-11-25 18:21:43,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:21:43,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:21:43,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:21:43,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:21:43,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (1/1) ... [2021-11-25 18:21:43,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (1/1) ... [2021-11-25 18:21:43,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (1/1) ... [2021-11-25 18:21:43,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (1/1) ... [2021-11-25 18:21:44,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (1/1) ... [2021-11-25 18:21:44,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (1/1) ... [2021-11-25 18:21:44,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (1/1) ... [2021-11-25 18:21:44,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:21:44,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:21:44,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:21:44,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:21:44,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (1/1) ... [2021-11-25 18:21:44,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:44,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:21:44,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:21:44,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:21:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2021-11-25 18:21:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2021-11-25 18:21:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-25 18:21:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-25 18:21:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-25 18:21:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-25 18:21:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2021-11-25 18:21:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2021-11-25 18:21:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-25 18:21:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2021-11-25 18:21:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2021-11-25 18:21:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 18:21:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:21:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-25 18:21:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-25 18:21:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-25 18:21:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:21:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-25 18:21:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-25 18:21:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-25 18:21:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-25 18:21:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-11-25 18:21:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-11-25 18:21:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2021-11-25 18:21:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2021-11-25 18:21:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-11-25 18:21:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-11-25 18:21:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:21:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:21:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-25 18:21:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-25 18:21:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 18:21:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 18:21:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:21:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:21:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2021-11-25 18:21:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2021-11-25 18:21:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-25 18:21:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-25 18:21:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~$Pointer$ [2021-11-25 18:21:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~$Pointer$ [2021-11-25 18:21:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-11-25 18:21:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-11-25 18:21:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2021-11-25 18:21:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2021-11-25 18:21:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:21:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:21:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2021-11-25 18:21:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2021-11-25 18:21:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2021-11-25 18:21:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2021-11-25 18:21:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-25 18:21:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-25 18:21:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 18:21:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 18:21:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:21:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:21:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2021-11-25 18:21:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2021-11-25 18:21:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:21:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:21:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2021-11-25 18:21:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2021-11-25 18:21:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-11-25 18:21:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-11-25 18:21:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2021-11-25 18:21:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2021-11-25 18:21:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure __unit_alloc [2021-11-25 18:21:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __unit_alloc [2021-11-25 18:21:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:21:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:21:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:21:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-11-25 18:21:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-11-25 18:21:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:21:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-25 18:21:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-25 18:21:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 18:21:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 18:21:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-25 18:21:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-25 18:21:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-25 18:21:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-25 18:21:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-25 18:21:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:21:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 18:21:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:21:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2021-11-25 18:21:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2021-11-25 18:21:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 18:21:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 18:21:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:21:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-25 18:21:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-25 18:21:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-25 18:21:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-25 18:21:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:21:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:21:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-25 18:21:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-25 18:21:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-11-25 18:21:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-11-25 18:21:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure sk_run_filter [2021-11-25 18:21:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_run_filter [2021-11-25 18:21:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:21:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:21:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:21:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:21:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:21:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:21:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2021-11-25 18:21:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2021-11-25 18:21:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2021-11-25 18:21:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2021-11-25 18:21:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 18:21:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 18:21:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-25 18:21:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-25 18:21:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 18:21:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 18:21:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2021-11-25 18:21:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2021-11-25 18:21:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:21:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:21:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-11-25 18:21:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-11-25 18:21:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2021-11-25 18:21:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2021-11-25 18:21:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 18:21:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 18:21:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2021-11-25 18:21:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2021-11-25 18:21:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:21:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:21:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-25 18:21:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-25 18:21:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2021-11-25 18:21:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2021-11-25 18:21:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-11-25 18:21:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-11-25 18:21:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-11-25 18:21:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-11-25 18:21:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2021-11-25 18:21:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2021-11-25 18:21:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2021-11-25 18:21:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2021-11-25 18:21:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:21:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:21:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2021-11-25 18:21:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2021-11-25 18:21:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-25 18:21:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-25 18:21:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-25 18:21:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-25 18:21:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-25 18:21:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-25 18:21:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-25 18:21:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-25 18:21:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-25 18:21:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-25 18:21:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-25 18:21:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-25 18:21:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-25 18:21:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-25 18:21:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-11-25 18:21:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-11-25 18:21:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2021-11-25 18:21:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2021-11-25 18:21:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:21:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-25 18:21:44,346 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-25 18:21:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-25 18:21:44,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-25 18:21:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:21:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 18:21:44,346 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 18:21:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:21:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:21:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-25 18:21:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-25 18:21:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:21:44,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:21:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-25 18:21:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-25 18:21:44,348 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-25 18:21:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 18:21:44,348 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 18:21:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 18:21:44,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 18:21:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 18:21:44,349 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 18:21:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2021-11-25 18:21:44,350 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2021-11-25 18:21:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-25 18:21:44,350 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-25 18:21:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-25 18:21:44,350 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-25 18:21:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 18:21:44,351 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 18:21:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-11-25 18:21:44,351 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-11-25 18:21:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 18:21:44,351 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 18:21:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2021-11-25 18:21:44,352 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2021-11-25 18:21:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-11-25 18:21:44,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-11-25 18:21:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-25 18:21:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2021-11-25 18:21:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2021-11-25 18:21:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-25 18:21:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-25 18:21:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:21:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:21:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-25 18:21:44,354 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-25 18:21:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:21:44,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:21:45,223 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:21:45,231 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:21:49,013 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-25 18:21:49,013 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-25 18:22:02,032 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 18:22:02,039 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 18:22:02,045 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 18:22:02,048 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 18:22:02,060 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 18:22:13,990 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6446: SUMMARY for call ppp_read_#t~ret294#1.base, ppp_read_#t~ret294#1.offset := get_current(); srcloc: null [2021-11-25 18:22:13,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6446-1: ppp_read_~tmp___0~15#1.base, ppp_read_~tmp___0~15#1.offset := ppp_read_#t~ret294#1.base, ppp_read_#t~ret294#1.offset;havoc ppp_read_#t~ret294#1.base, ppp_read_#t~ret294#1.offset;ppp_read_~__ptr~0#1.base, ppp_read_~__ptr~0#1.offset := ppp_read_~tmp___0~15#1.base, ppp_read_~tmp___0~15#1.offset; [2021-11-25 18:22:13,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##437: assume !false; [2021-11-25 18:22:13,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##436: assume false; [2021-11-25 18:22:13,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6528-1: ppp_read_~tmp___6~0#1.base, ppp_read_~tmp___6~0#1.offset := ppp_read_#t~ret306#1.base, ppp_read_#t~ret306#1.offset;havoc ppp_read_#t~ret306#1.base, ppp_read_#t~ret306#1.offset;ppp_read_~__ptr___3~0#1.base, ppp_read_~__ptr___3~0#1.offset := ppp_read_~tmp___6~0#1.base, ppp_read_~tmp___6~0#1.offset; [2021-11-25 18:22:13,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6528: SUMMARY for call ppp_read_#t~ret306#1.base, ppp_read_#t~ret306#1.offset := get_current(); srcloc: null [2021-11-25 18:22:13,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##261: assume !false; [2021-11-25 18:22:13,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##260: assume false; [2021-11-25 18:22:13,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##265: assume !false; [2021-11-25 18:22:13,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##264: assume false; [2021-11-25 18:22:13,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##271: assume !false; [2021-11-25 18:22:13,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##270: assume false; [2021-11-25 18:22:13,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##279: assume false; [2021-11-25 18:22:13,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##280: assume !false; [2021-11-25 18:22:13,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##206: assume !false; [2021-11-25 18:22:13,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##205: assume false; [2021-11-25 18:22:13,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##209: assume false; [2021-11-25 18:22:13,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume !false; [2021-11-25 18:22:13,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##317: assume false; [2021-11-25 18:22:13,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##318: assume !false; [2021-11-25 18:22:13,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##324: assume !false; [2021-11-25 18:22:13,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##323: assume false; [2021-11-25 18:22:13,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##173: assume !false; [2021-11-25 18:22:13,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##172: assume false; [2021-11-25 18:22:13,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##64: assume !false; [2021-11-25 18:22:13,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##63: assume false; [2021-11-25 18:22:13,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !false; [2021-11-25 18:22:13,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume false; [2021-11-25 18:22:13,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##127: assume !false; [2021-11-25 18:22:13,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2021-11-25 18:22:13,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-11-25 18:22:13,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2021-11-25 18:22:13,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-11-25 18:22:13,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##158: assume !false; [2021-11-25 18:22:13,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##157: assume false; [2021-11-25 18:22:13,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##164: assume !false; [2021-11-25 18:22:13,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume false; [2021-11-25 18:22:13,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##329: assume false; [2021-11-25 18:22:13,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##330: assume !false; [2021-11-25 18:22:13,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##338: assume !false; [2021-11-25 18:22:13,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##337: assume false; [2021-11-25 18:22:13,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##126: assume false; [2021-11-25 18:22:13,997 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##367: assume !false; [2021-11-25 18:22:13,997 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##366: assume false; [2021-11-25 18:22:14,072 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:22:14,094 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:22:14,094 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-25 18:22:14,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:14 BoogieIcfgContainer [2021-11-25 18:22:14,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:22:14,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:22:14,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:22:14,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:22:14,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:21:39" (1/3) ... [2021-11-25 18:22:14,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660b80f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:14, skipping insertion in model container [2021-11-25 18:22:14,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:43" (2/3) ... [2021-11-25 18:22:14,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660b80f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:14, skipping insertion in model container [2021-11-25 18:22:14,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:14" (3/3) ... [2021-11-25 18:22:14,110 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-ppp_generic.ko.cil.out.i [2021-11-25 18:22:14,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:22:14,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:22:14,186 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:22:14,196 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:22:14,196 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:22:14,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 1432 states, 1013 states have (on average 1.3534057255676208) internal successors, (1371), 1048 states have internal predecessors, (1371), 326 states have call successors, (326), 93 states have call predecessors, (326), 93 states have return successors, (326), 318 states have call predecessors, (326), 326 states have call successors, (326) [2021-11-25 18:22:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 18:22:14,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:14,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:14,281 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:14,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2078505288, now seen corresponding path program 1 times [2021-11-25 18:22:14,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:22:14,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122922770] [2021-11-25 18:22:14,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:14,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:22:14,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:22:14,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:22:14,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:22:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:15,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:22:15,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:15,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:15,345 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:22:15,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122922770] [2021-11-25 18:22:15,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122922770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:15,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:15,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:22:15,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612421721] [2021-11-25 18:22:15,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:15,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:15,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:22:15,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:15,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:15,393 INFO L87 Difference]: Start difference. First operand has 1432 states, 1013 states have (on average 1.3534057255676208) internal successors, (1371), 1048 states have internal predecessors, (1371), 326 states have call successors, (326), 93 states have call predecessors, (326), 93 states have return successors, (326), 318 states have call predecessors, (326), 326 states have call successors, (326) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:15,976 INFO L93 Difference]: Finished difference Result 4250 states and 6135 transitions. [2021-11-25 18:22:15,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:15,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 18:22:15,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:16,035 INFO L225 Difference]: With dead ends: 4250 [2021-11-25 18:22:16,035 INFO L226 Difference]: Without dead ends: 2804 [2021-11-25 18:22:16,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:16,061 INFO L933 BasicCegarLoop]: 2349 mSDtfsCounter, 1978 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:16,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 4305 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-11-25 18:22:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2801. [2021-11-25 18:22:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 1975 states have (on average 1.3291139240506329) internal successors, (2625), 2042 states have internal predecessors, (2625), 641 states have call successors, (641), 185 states have call predecessors, (641), 184 states have return successors, (642), 623 states have call predecessors, (642), 639 states have call successors, (642) [2021-11-25 18:22:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3908 transitions. [2021-11-25 18:22:16,425 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3908 transitions. Word has length 12 [2021-11-25 18:22:16,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:16,425 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3908 transitions. [2021-11-25 18:22:16,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3908 transitions. [2021-11-25 18:22:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 18:22:16,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:16,443 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:16,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:16,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:22:16,666 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:16,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1790442611, now seen corresponding path program 1 times [2021-11-25 18:22:16,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:22:16,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165839260] [2021-11-25 18:22:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:16,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:22:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:22:16,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:22:16,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:22:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:18,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:22:18,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 18:22:18,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:18,758 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:22:18,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165839260] [2021-11-25 18:22:18,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165839260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:18,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:18,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:22:18,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130247794] [2021-11-25 18:22:18,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:18,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:18,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:22:18,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:18,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:18,763 INFO L87 Difference]: Start difference. First operand 2801 states and 3908 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-25 18:22:19,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:19,164 INFO L93 Difference]: Finished difference Result 5578 states and 7787 transitions. [2021-11-25 18:22:19,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:19,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 74 [2021-11-25 18:22:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:19,198 INFO L225 Difference]: With dead ends: 5578 [2021-11-25 18:22:19,199 INFO L226 Difference]: Without dead ends: 2801 [2021-11-25 18:22:19,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:22:19,217 INFO L933 BasicCegarLoop]: 1981 mSDtfsCounter, 3 mSDsluCounter, 5931 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7912 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:19,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7912 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2021-11-25 18:22:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2801. [2021-11-25 18:22:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 1975 states have (on average 1.3281012658227849) internal successors, (2623), 2040 states have internal predecessors, (2623), 641 states have call successors, (641), 185 states have call predecessors, (641), 184 states have return successors, (642), 623 states have call predecessors, (642), 639 states have call successors, (642) [2021-11-25 18:22:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3906 transitions. [2021-11-25 18:22:19,407 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3906 transitions. Word has length 74 [2021-11-25 18:22:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:19,408 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3906 transitions. [2021-11-25 18:22:19,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-25 18:22:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3906 transitions. [2021-11-25 18:22:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 18:22:19,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:19,422 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:19,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:19,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:22:19,647 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:19,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:19,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1751657911, now seen corresponding path program 1 times [2021-11-25 18:22:19,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:22:19,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702333947] [2021-11-25 18:22:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:19,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:22:19,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:22:19,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:22:19,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 18:22:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:21,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:22:21,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 18:22:21,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:21,535 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:22:21,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702333947] [2021-11-25 18:22:21,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702333947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:21,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:21,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:21,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293851693] [2021-11-25 18:22:21,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:21,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:21,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:22:21,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:21,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:21,538 INFO L87 Difference]: Start difference. First operand 2801 states and 3906 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 18:22:21,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:21,875 INFO L93 Difference]: Finished difference Result 6586 states and 9372 transitions. [2021-11-25 18:22:21,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:21,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2021-11-25 18:22:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:21,913 INFO L225 Difference]: With dead ends: 6586 [2021-11-25 18:22:21,913 INFO L226 Difference]: Without dead ends: 3812 [2021-11-25 18:22:21,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:21,930 INFO L933 BasicCegarLoop]: 2334 mSDtfsCounter, 502 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 4331 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:21,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 4331 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2021-11-25 18:22:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3796. [2021-11-25 18:22:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3796 states, 2682 states have (on average 1.3434004474272931) internal successors, (3603), 2761 states have internal predecessors, (3603), 929 states have call successors, (929), 185 states have call predecessors, (929), 184 states have return successors, (933), 909 states have call predecessors, (933), 927 states have call successors, (933) [2021-11-25 18:22:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 5465 transitions. [2021-11-25 18:22:22,212 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 5465 transitions. Word has length 89 [2021-11-25 18:22:22,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:22,213 INFO L470 AbstractCegarLoop]: Abstraction has 3796 states and 5465 transitions. [2021-11-25 18:22:22,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 18:22:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 5465 transitions. [2021-11-25 18:22:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-25 18:22:22,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:22,224 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:22,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:22,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:22:22,443 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1606886577, now seen corresponding path program 1 times [2021-11-25 18:22:22,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:22:22,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374807616] [2021-11-25 18:22:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:22,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:22:22,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:22:22,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:22:22,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 18:22:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:24,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:22:24,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:24,375 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-25 18:22:24,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 20 [2021-11-25 18:22:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 18:22:28,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:22:28,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:22:28,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374807616] [2021-11-25 18:22:28,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374807616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:28,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:28,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:22:28,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517854045] [2021-11-25 18:22:28,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:28,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:28,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:22:28,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:28,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2021-11-25 18:22:28,696 INFO L87 Difference]: Start difference. First operand 3796 states and 5465 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 18:22:34,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:36,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:38,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:40,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:42,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:44,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:50,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:52,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:54,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:56,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:01,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:03,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:07,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:09,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:13,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:15,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:16,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:16,082 INFO L93 Difference]: Finished difference Result 7578 states and 10952 transitions. [2021-11-25 18:23:16,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:23:16,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2021-11-25 18:23:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:16,123 INFO L225 Difference]: With dead ends: 7578 [2021-11-25 18:23:16,123 INFO L226 Difference]: Without dead ends: 3810 [2021-11-25 18:23:16,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2021-11-25 18:23:16,146 INFO L933 BasicCegarLoop]: 1982 mSDtfsCounter, 4 mSDsluCounter, 5507 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 0 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7489 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 45.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:16,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7489 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 427 Invalid, 13 Unknown, 9 Unchecked, 45.0s Time] [2021-11-25 18:23:16,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-11-25 18:23:16,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3804. [2021-11-25 18:23:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 2688 states have (on average 1.3433779761904763) internal successors, (3611), 2767 states have internal predecessors, (3611), 931 states have call successors, (931), 185 states have call predecessors, (931), 184 states have return successors, (935), 911 states have call predecessors, (935), 929 states have call successors, (935) [2021-11-25 18:23:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 5477 transitions. [2021-11-25 18:23:16,388 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 5477 transitions. Word has length 106 [2021-11-25 18:23:16,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:16,389 INFO L470 AbstractCegarLoop]: Abstraction has 3804 states and 5477 transitions. [2021-11-25 18:23:16,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 18:23:16,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 5477 transitions. [2021-11-25 18:23:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-25 18:23:16,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:16,403 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:16,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:16,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:16,606 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:23:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash -329013054, now seen corresponding path program 1 times [2021-11-25 18:23:16,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:16,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787995441] [2021-11-25 18:23:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:16,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:16,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:16,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:16,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 18:23:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:23:37,860 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:24:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:24:17,608 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 18:24:17,608 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:24:17,609 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:24:17,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:24:17,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:24:17,837 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-25 18:24:17,840 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:24:18,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:24:18 BoogieIcfgContainer [2021-11-25 18:24:18,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:24:18,079 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:24:18,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:24:18,079 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:24:18,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:14" (3/4) ... [2021-11-25 18:24:18,083 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:24:18,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:24:18,084 INFO L158 Benchmark]: Toolchain (without parser) took 158642.07ms. Allocated memory was 56.6MB in the beginning and 369.1MB in the end (delta: 312.5MB). Free memory was 33.1MB in the beginning and 132.7MB in the end (delta: -99.7MB). Peak memory consumption was 212.8MB. Max. memory is 16.1GB. [2021-11-25 18:24:18,084 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 56.6MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:24:18,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4083.64ms. Allocated memory was 56.6MB in the beginning and 165.7MB in the end (delta: 109.1MB). Free memory was 32.9MB in the beginning and 63.5MB in the end (delta: -30.6MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. [2021-11-25 18:24:18,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 356.37ms. Allocated memory was 165.7MB in the beginning and 262.1MB in the end (delta: 96.5MB). Free memory was 63.5MB in the beginning and 176.6MB in the end (delta: -113.2MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-11-25 18:24:18,086 INFO L158 Benchmark]: Boogie Preprocessor took 318.00ms. Allocated memory is still 262.1MB. Free memory was 176.6MB in the beginning and 151.2MB in the end (delta: 25.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-25 18:24:18,086 INFO L158 Benchmark]: RCFGBuilder took 29896.72ms. Allocated memory is still 262.1MB. Free memory was 150.1MB in the beginning and 125.3MB in the end (delta: 24.8MB). Peak memory consumption was 133.3MB. Max. memory is 16.1GB. [2021-11-25 18:24:18,087 INFO L158 Benchmark]: TraceAbstraction took 123975.83ms. Allocated memory was 262.1MB in the beginning and 369.1MB in the end (delta: 107.0MB). Free memory was 125.3MB in the beginning and 132.7MB in the end (delta: -7.4MB). Peak memory consumption was 99.6MB. Max. memory is 16.1GB. [2021-11-25 18:24:18,087 INFO L158 Benchmark]: Witness Printer took 4.72ms. Allocated memory is still 369.1MB. Free memory is still 132.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:24:18,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 56.6MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4083.64ms. Allocated memory was 56.6MB in the beginning and 165.7MB in the end (delta: 109.1MB). Free memory was 32.9MB in the beginning and 63.5MB in the end (delta: -30.6MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 356.37ms. Allocated memory was 165.7MB in the beginning and 262.1MB in the end (delta: 96.5MB). Free memory was 63.5MB in the beginning and 176.6MB in the end (delta: -113.2MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 318.00ms. Allocated memory is still 262.1MB. Free memory was 176.6MB in the beginning and 151.2MB in the end (delta: 25.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * RCFGBuilder took 29896.72ms. Allocated memory is still 262.1MB. Free memory was 150.1MB in the beginning and 125.3MB in the end (delta: 24.8MB). Peak memory consumption was 133.3MB. Max. memory is 16.1GB. * TraceAbstraction took 123975.83ms. Allocated memory was 262.1MB in the beginning and 369.1MB in the end (delta: 107.0MB). Free memory was 125.3MB in the beginning and 132.7MB in the end (delta: -7.4MB). Peak memory consumption was 99.6MB. Max. memory is 16.1GB. * Witness Printer took 4.72ms. Allocated memory is still 369.1MB. Free memory is still 132.7MB. There was no memory consumed. Max. memory is 16.1GB. * 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: 10809]: 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 6167. Possible FailurePath: [L6164-L6171] static struct mutex ppp_mutex = {{1}, {{{{0U}, 3735899821U, 4294967295U, (void *)0x0fffffffffffffffUL, {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, "ppp_mutex.wait_lock", 0, 0UL}}}}, {& ppp_mutex.wait_list, & ppp_mutex.wait_list}, (struct task_struct *)0, (char const *)0, (void *)(& ppp_mutex), {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, "ppp_mutex", 0, 0UL}}; [L6172] static atomic_t ppp_unit_count = {0}; [L6173] static atomic_t channel_count = {0}; [L6174] static int ppp_net_id ; [L6207] static struct class *ppp_class ; [L6268-L6269] static int const npindex_to_proto[6U] = { (int const )33, (int const )87, (int const )43, (int const )41, (int const )641, (int const )643}; [L6313-L6314] static int const npindex_to_ethertype[6U] = { (int const )2048, (int const )34525, (int const )33079, (int const )16, (int const )34887, (int const )34888}; [L7621-L7646] static struct file_operations const ppp_device_fops = {& __this_module, & noop_llseek, & ppp_read, & ppp_write, (ssize_t (*)(struct kiocb * , struct iovec const * , unsigned long , loff_t ))0, (ssize_t (*)(struct kiocb * , struct iovec const * , unsigned long , loff_t ))0, (int (*)(struct file * , void * , int (*)(void * , char const * , int , loff_t , u64 , unsigned int ) ))0, & ppp_poll, & ppp_ioctl, (long (*)(struct file * , unsigned int , unsigned long ))0, (int (*)(struct file * , struct vm_area_struct * ))0, & ppp_open, (int (*)(struct file * , fl_owner_t ))0, & ppp_release, (int (*)(struct file * , int ))0, (int (*)(struct kiocb * , int ))0, (int (*)(int , struct file * , int ))0, (int (*)(struct file * , int , struct file_lock * ))0, (ssize_t (*)(struct file * , struct page * , int , size_t , loff_t * , int ))0, (unsigned long (*)(struct file * , unsigned long , unsigned long , unsigned long , unsigned long ))0, (int (*)(int ))0, (int (*)(struct file * , int , struct file_lock * ))0, (ssize_t (*)(struct pipe_inode_info * , struct file * , loff_t * , size_t , unsigned int ))0, (ssize_t (*)(struct file * , loff_t * , struct pipe_inode_info * , size_t , unsigned int ))0, (int (*)(struct file * , long , struct file_lock ** ))0, (long (*)(struct file * , int , loff_t , loff_t ))0}; [L7679-L7680] static struct pernet_operations ppp_net_ops = {{(struct list_head *)0, (struct list_head *)0}, & ppp_init_net, & ppp_exit_net, (void (*)(struct list_head * ))0, & ppp_net_id, 376UL}; [L7891-L7927] static struct net_device_ops const ppp_netdev_ops = {(int (*)(struct net_device * ))0, (void (*)(struct net_device * ))0, (int (*)(struct net_device * ))0, (int (*)(struct net_device * ))0, & ppp_start_xmit, (u16 (*)(struct net_device * , struct sk_buff * ))0, (void (*)(struct net_device * , int ))0, (void (*)(struct net_device * ))0, (void (*)(struct net_device * ))0, (int (*)(struct net_device * , void * ))0, (int (*)(struct net_device * ))0, & ppp_net_ioctl, (int (*)(struct net_device * , struct ifmap * ))0, (int (*)(struct net_device * , int ))0, (int (*)(struct net_device * , struct neigh_parms * ))0, (void (*)(struct net_device * ))0, (struct rtnl_link_stats64 *(*)(struct net_device * , struct rtnl_link_stats64 * ))0, (struct net_device_stats *(*)(struct net_device * ))0, (void (*)(struct net_device * , struct vlan_group * ))0, (void (*)(struct net_device * , unsigned short ))0, (void (*)(struct net_device * , unsigned short ))0, (void (*)(struct net_device * ))0, (int (*)(struct net_device * , struct netpoll_info * ))0, (void (*)(struct net_device * ))0, (int (*)(struct net_device * , int , u8 * ))0, (int (*)(struct net_device * , int , u16 , u8 ))0, (int (*)(struct net_device * , int , int ))0, (int (*)(struct net_device * , int , struct ifla_vf_info * ))0, (int (*)(struct net_device * , int , struct nlattr ** ))0, (int (*)(struct net_device * , int , struct sk_buff * ))0, (int (*)(struct net_device * , u8 ))0, (int (*)(struct net_device * ))0, (int (*)(struct net_device * ))0, (int (*)(struct net_device * , u16 , struct scatterlist * , unsigned int ))0, (int (*)(struct net_device * , u16 ))0, (int (*)(struct net_device * , u16 , struct scatterlist * , unsigned int ))0, (int (*)(struct net_device * , u64 * , int ))0, (int (*)(struct net_device * , struct sk_buff const * , u16 , u32 ))0, (int (*)(struct net_device * , struct net_device * ))0, (int (*)(struct net_device * , struct net_device * ))0, (u32 (*)(struct net_device * , u32 ))0, (int (*)(struct net_device * , u32 ))0}; [L8312] static bool mp_protocol_compress = (bool )1; [L9989] static struct list_head compressor_list = {& compressor_list, & compressor_list}; [L9990-L9994] static spinlock_t compressor_list_lock = {{{{0U}, 3735899821U, 4294967295U, (void *)0x0fffffffffffffffUL, {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, "compressor_list_lock", 0, 0UL}}}}; [L10620] int LDV_IN_INTERRUPT ; [L10813] int ldv_module_refcounter = 1; VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=0, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10622] struct file *var_group1 ; [L10623] char *var_ppp_read_5_p1 ; [L10624] size_t var_ppp_read_5_p2 ; [L10625] loff_t *var_ppp_read_5_p3 ; [L10626] ssize_t res_ppp_read_5 ; [L10627] char const *var_ppp_write_6_p1 ; [L10628] size_t var_ppp_write_6_p2 ; [L10629] loff_t *var_ppp_write_6_p3 ; [L10630] ssize_t res_ppp_write_6 ; [L10631] poll_table *var_ppp_poll_7_p1 ; [L10632] unsigned int var_ppp_ioctl_9_p1 ; [L10633] unsigned long var_ppp_ioctl_9_p2 ; [L10634] struct inode *var_group2 ; [L10635] int res_ppp_open_3 ; [L10636] struct net *var_group3 ; [L10637] struct sk_buff *var_group4 ; [L10638] struct net_device *var_group5 ; [L10639] struct ifreq *var_group6 ; [L10640] int var_ppp_net_ioctl_15_p2 ; [L10641] int ldv_s_ppp_device_fops_file_operations ; [L10642] int tmp ; [L10643] int tmp___0 ; [L10644] int tmp___1 ; [L10647] ldv_s_ppp_device_fops_file_operations = 0 [L10648] LDV_IN_INTERRUPT = 1 [L10649] FCALL ldv_initialize() [L10650] CALL, EXPR ppp_init() [L7682] int err ; [L7683] struct lock_class_key __key ; [L7684] struct class *tmp ; [L7685] long tmp___0 ; [L7686] long tmp___1 ; [L7690] CALL, EXPR register_pernet_device(& ppp_net_ops) [L11180] return __VERIFIER_nondet_int(); [L7690] RET, EXPR register_pernet_device(& ppp_net_ops) [L7690] err = register_pernet_device(& ppp_net_ops) [L7692] COND FALSE !(err != 0) [L7700] CALL, EXPR register_chrdev(108U, "ppp", & ppp_device_fops) [L5879] int tmp ; [L5882] CALL, EXPR __register_chrdev(major, 0U, 256U, name, fops) [L11003] return __VERIFIER_nondet_int(); [L5882] RET, EXPR __register_chrdev(major, 0U, 256U, name, fops) [L5882] tmp = __register_chrdev(major, 0U, 256U, name, fops) [L5884] return (tmp); VAL [\old(major)=108, \result=0, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, fops={66:0}, fops={66:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, major=108, mp_protocol_compress=1, name={18:0}, name={18:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0] [L7700] RET, EXPR register_chrdev(108U, "ppp", & ppp_device_fops) [L7700] err = register_chrdev(108U, "ppp", & ppp_device_fops) [L7702] COND FALSE !(err != 0) [L7710] CALL, EXPR __class_create(& __this_module, "ppp", & __key) [L10972] CALL, EXPR ldv_malloc(sizeof(struct class)) VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10957] COND TRUE __VERIFIER_nondet_bool() [L10957] return 0; VAL [\old(size)=128, \result={0:0}, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, size=128] [L10972] RET, EXPR ldv_malloc(sizeof(struct class)) VAL [__this_module={0:134217728}, arg0={0:134217728}, arg0={0:134217728}, arg1={20:0}, arg1={20:0}, arg2={72:0}, arg2={72:0}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct class))={0:0}, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10972] return ldv_malloc(sizeof(struct class)); [L7710] RET, EXPR __class_create(& __this_module, "ppp", & __key) [L7710] tmp = __class_create(& __this_module, "ppp", & __key) [L7711] ppp_class = tmp VAL [__key={72:0}, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp={0:0}] [L7712] CALL, EXPR IS_ERR((void const *)ppp_class) VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, ptr={0:0}] [L5217] long tmp ; [L5220] tmp = __builtin_expect((long )((unsigned long )ptr > 0x0ffffffffffff000UL), 0L) [L5222] return (tmp); VAL [\result=0, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, ptr={0:0}, ptr={0:0}, tmp=0] [L7712] RET, EXPR IS_ERR((void const *)ppp_class) VAL [__key={72:0}, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=0, IS_ERR((void const *)ppp_class)=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp={0:0}] [L7712] tmp___1 = IS_ERR((void const *)ppp_class) [L7714] COND FALSE !(tmp___1 != 0L) [L7725] return (0); [L7725] return (0); VAL [\result=0, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp={0:0}, tmp___1=0] [L10650] RET, EXPR ppp_init() [L10650] tmp = ppp_init() [L10652] COND FALSE !(tmp != 0) VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0] [L10784] tmp___1 = __VERIFIER_nondet_int() [L10786] COND TRUE tmp___1 != 0 VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___1=2147483648] [L10659] tmp___0 = __VERIFIER_nondet_int() [L10661] COND FALSE !(tmp___0 == 0) VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=2147483648] [L10664] COND FALSE !(tmp___0 == 1) VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=2147483648] [L10667] COND FALSE !(tmp___0 == 2) VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=2147483648] [L10670] COND FALSE !(tmp___0 == 3) VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=2147483648] [L10673] COND FALSE !(tmp___0 == 4) VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=2147483648] [L10676] COND TRUE tmp___0 == 5 VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_s_ppp_device_fops_file_operations=0, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, tmp___0=5, tmp___1=2147483648] [L10753] CALL ppp_ioctl(var_group1, var_ppp_ioctl_9_p1, var_ppp_ioctl_9_p2) [L6746] struct ppp_file *pf ; [L6747] struct ppp *ppp ; [L6748] int err ; [L6749] int val ; [L6750] int val2 ; [L6751] int i ; [L6752] struct ppp_idle idle ; [L6753] struct npioctl npi ; [L6754] int unit ; [L6755] int cflags ; [L6756] struct slcompress *vj ; [L6757] void *argp ; [L6758] int *p ; [L6759] struct task_struct *tmp ; [L6760] int tmp___0 ; [L6761] struct ppp_file const *__mptr ; [L6762] long tmp___1 ; [L6763] long tmp___2 ; [L6764] struct channel *pch ; [L6765] struct ppp_channel *chan ; [L6766] struct ppp_file const *__mptr___0 ; [L6767] int __ret_gu ; [L6768] unsigned long __val_gu ; [L6769] struct ppp_file const *__mptr___1 ; [L6770] int __ret_gu___0 ; [L6771] unsigned long __val_gu___0 ; [L6772] int __ret_gu___1 ; [L6773] unsigned long __val_gu___1 ; [L6774] int __ret_pu ; [L6775] int __pu_val ; [L6776] int __ret_pu___0 ; [L6777] int __pu_val___0 ; [L6778] int __ret_gu___2 ; [L6779] unsigned long __val_gu___2 ; [L6780] int __ret_pu___1 ; [L6781] int __pu_val___1 ; [L6782] int tmp___3 ; [L6783] int __ret_gu___3 ; [L6784] unsigned long __val_gu___3 ; [L6785] unsigned long tmp___4 ; [L6786] int tmp___5 ; [L6787] struct sock_filter *code ; [L6788] struct sock_filter *code___0 ; [L6789] int __ret_gu___4 ; [L6790] unsigned long __val_gu___4 ; [L6792] EXPR file->private_data [L6792] pf = (struct ppp_file *)file->private_data [L6793] err = -14 [L6794] argp = (void *)arg [L6795] p = (int *)argp VAL [\old(arg)=71, \old(cmd)=1074033724, __this_module={0:134217728}, arg=71, argp={0:71}, channel_count={62:0}, cmd=1074033724, code={72:0}, code___0={104:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=4294967282, file={0:288230376151727995}, file={0:288230376151727995}, idle={126:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={87:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:71}, pf={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6796] COND FALSE !((unsigned long )pf == (unsigned long )((struct ppp_file *)0)) VAL [\old(arg)=71, \old(cmd)=1074033724, __this_module={0:134217728}, arg=71, argp={0:71}, channel_count={62:0}, cmd=1074033724, code={72:0}, code___0={104:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=4294967282, file={0:288230376151727995}, file={0:288230376151727995}, idle={126:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={87:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:71}, pf={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6804] COND TRUE cmd == 1074033724U [L6806] err = -22 VAL [\old(arg)=71, \old(cmd)=1074033724, __this_module={0:134217728}, arg=71, argp={0:71}, channel_count={62:0}, cmd=1074033724, code={72:0}, code___0={104:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=4294967274, file={0:288230376151727995}, file={0:288230376151727995}, idle={126:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={87:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:71}, pf={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6807] FCALL mutex_lock_nested(& ppp_mutex, 0U) VAL [\old(arg)=71, \old(cmd)=1074033724, __this_module={0:134217728}, arg=71, argp={0:71}, channel_count={62:0}, cmd=1074033724, code={72:0}, code___0={104:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=4294967274, file={0:288230376151727995}, file={0:288230376151727995}, idle={126:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={87:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:71}, pf={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6809] EXPR pf->kind VAL [\old(arg)=71, \old(cmd)=1074033724, __this_module={0:134217728}, arg=71, argp={0:71}, channel_count={62:0}, cmd=1074033724, code={72:0}, code___0={104:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=4294967274, file={0:288230376151727995}, file={0:288230376151727995}, idle={126:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={87:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:71}, pf={0:288230376151728272}, pf->kind=-2147483647, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6809] COND FALSE !((unsigned int )pf->kind == 1U) [L6821] CALL, EXPR atomic_long_read(& file->f_count) VAL [__this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5267] atomic64_t *v ; [L5268] long tmp ; [L5271] v = l [L5272] CALL, EXPR atomic64_read((atomic64_t const *)v) [L5263] EXPR v->counter [L5263] return ((long )*((long volatile *)(& v->counter))); [L5272] RET, EXPR atomic64_read((atomic64_t const *)v) [L5272] tmp = atomic64_read((atomic64_t const *)v) [L5274] return (tmp); VAL [\result=0, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, l={0:288230376151728107}, l={0:288230376151728107}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=0, v={0:288230376151728107}] [L6821] RET, EXPR atomic_long_read(& file->f_count) VAL [\old(arg)=71, \old(cmd)=1074033724, __this_module={0:134217728}, arg=71, argp={0:71}, atomic_long_read(& file->f_count)=0, channel_count={62:0}, cmd=1074033724, code={72:0}, code___0={104:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=4294967274, file={0:288230376151727995}, file={0:288230376151727995}, idle={126:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={87:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:71}, pf={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L6821] tmp___2 = atomic_long_read(& file->f_count) [L6823] COND TRUE tmp___2 <= 2L VAL [\old(arg)=71, \old(cmd)=1074033724, __this_module={0:134217728}, arg=71, argp={0:71}, channel_count={62:0}, cmd=1074033724, code={72:0}, code___0={104:0}, compressor_list={69:0}, compressor_list_lock={70:0}, err=4294967274, file={0:288230376151727995}, file={0:288230376151727995}, idle={126:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npi={87:0}, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, p={0:71}, pf={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp___2=0] [L6825] CALL ppp_release((struct inode *)0, file) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, file={0:288230376151727995}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, unused={0:0}] [L6335] struct ppp_file *pf ; [L6336] struct ppp *ppp ; [L6337] struct ppp_file const *__mptr ; [L6338] struct ppp_file const *__mptr___0 ; [L6339] struct ppp_file const *__mptr___1 ; [L6340] int tmp ; [L6342] EXPR file->private_data [L6342] pf = (struct ppp_file *)file->private_data [L6343] COND TRUE (unsigned long )pf != (unsigned long )((struct ppp_file *)0) [L6344] file->private_data = (void *)0 [L6345] EXPR pf->kind VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, file={0:288230376151727995}, file={0:288230376151727995}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, pf={0:288230376151728272}, pf->kind=1, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, unused={0:0}, unused={0:0}] [L6345] COND TRUE (unsigned int )pf->kind == 1U [L6346] __mptr = (struct ppp_file const *)pf [L6347] ppp = (struct ppp *)__mptr [L6348] EXPR ppp->owner VAL [\old(ldv_module_refcounter)=1, __mptr={0:288230376151728272}, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, file={0:288230376151727995}, file={0:288230376151727995}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, pf={0:288230376151728272}, ppp={0:288230376151728272}, ppp->owner={0:-6917529027641080832}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, unused={0:0}, unused={0:0}] [L6348] COND FALSE !((unsigned long )ppp->owner == (unsigned long )file) [L6357] CALL, EXPR atomic_dec_and_test(& pf->refcnt) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, v={0:288230376151728536}] [L5253] unsigned char c ; [L5257] return ((unsigned int )c != 0U); VAL [\old(ldv_module_refcounter)=1, \result=1, __this_module={0:134217728}, c=2, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, v={0:288230376151728536}, v={0:288230376151728536}] [L6357] RET, EXPR atomic_dec_and_test(& pf->refcnt) VAL [\old(ldv_module_refcounter)=1, __mptr={0:288230376151728272}, __this_module={0:134217728}, atomic_dec_and_test(& pf->refcnt)=1, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, file={0:288230376151727995}, file={0:288230376151727995}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, pf={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, unused={0:0}, unused={0:0}] [L6357] tmp = atomic_dec_and_test(& pf->refcnt) [L6359] COND TRUE tmp != 0 [L6360] EXPR pf->kind VAL [\old(ldv_module_refcounter)=1, __mptr={0:288230376151728272}, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, file={0:288230376151727995}, file={0:288230376151727995}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, pf={0:288230376151728272}, pf->kind=1, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=1, unused={0:0}, unused={0:0}] [L6360] COND TRUE (int )((unsigned int )pf->kind) == 1 [L6369] __mptr___0 = (struct ppp_file const *)pf VAL [\old(ldv_module_refcounter)=1, __mptr={0:288230376151728272}, __mptr___0={0:288230376151728272}, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, file={0:288230376151727995}, file={0:288230376151727995}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, pf={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, tmp=1, unused={0:0}, unused={0:0}] [L6370] CALL ppp_destroy_interface((struct ppp *)__mptr___0) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10292] FCALL atomic_dec(& ppp_unit_count) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10294] EXPR ppp->file.dead VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp->file.dead=-2147483648, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10294] COND FALSE !(ppp->file.dead == 0) [L10301] EXPR ppp->n_channels VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp->n_channels=0, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10301] COND FALSE !(ppp->n_channels != 0) [L10310] CALL ppp_ccp_closed(ppp) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L9952] void *xstate ; [L9953] void *rstate ; [L9954] struct compressor *xcomp ; [L9955] struct compressor *rcomp ; VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L9958] CALL spin_lock_bh(& ppp->wlock) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5320] FCALL _raw_spin_lock_bh(& lock->ldv_6060.rlock) [L9958] RET spin_lock_bh(& ppp->wlock) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L9959] CALL spin_lock_bh(& ppp->rlock) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5320] FCALL _raw_spin_lock_bh(& lock->ldv_6060.rlock) [L9959] RET spin_lock_bh(& ppp->rlock) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L9960] EXPR ppp->flags [L9960] ppp->flags = ppp->flags & 4294967103U [L9961] ppp->xstate = 0U [L9962] EXPR ppp->xcomp [L9962] xcomp = ppp->xcomp [L9963] EXPR ppp->xc_state [L9963] xstate = ppp->xc_state [L9964] ppp->xc_state = (void *)0 [L9965] ppp->rstate = 0U [L9966] EXPR ppp->rcomp [L9966] rcomp = ppp->rcomp [L9967] EXPR ppp->rc_state [L9967] rstate = ppp->rc_state [L9968] ppp->rc_state = (void *)0 VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, rcomp={4503599627370496:0}, rstate={0:0}, xcomp={0:-8}, xstate={-9223372036854775808:0}] [L9969] CALL spin_unlock_bh(& ppp->rlock) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5338] FCALL _raw_spin_unlock_bh(& lock->ldv_6060.rlock) [L9969] RET spin_unlock_bh(& ppp->rlock) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, rcomp={4503599627370496:0}, rstate={0:0}, xcomp={0:-8}, xstate={-9223372036854775808:0}] [L9970] CALL spin_unlock_bh(& ppp->wlock) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L5338] FCALL _raw_spin_unlock_bh(& lock->ldv_6060.rlock) [L9970] RET spin_unlock_bh(& ppp->wlock) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, rcomp={4503599627370496:0}, rstate={0:0}, xcomp={0:-8}, xstate={-9223372036854775808:0}] [L9972] COND TRUE (unsigned long )xstate != (unsigned long )((void *)0) [L9974] EXPR xcomp->comp_free VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, rcomp={4503599627370496:0}, rstate={0:0}, xcomp={0:-8}, xcomp->comp_free={9223372036854775806:12}, xstate={-9223372036854775808:0}] [L9974] CALL (*(xcomp->comp_free))(xstate) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L7931] dev->netdev_ops = & ppp_netdev_ops [L7932] dev->hard_header_len = (unsigned short)4 [L7933] dev->mtu = 1500U [L7934] dev->addr_len = (unsigned char)0 [L7935] dev->tx_queue_len = 3UL [L7936] dev->type = (unsigned short)512 [L7937] dev->flags = 4240U [L7938] EXPR dev->features [L7938] dev->features = dev->features | 8192U [L7939] EXPR dev->priv_flags [L7939] dev->priv_flags = dev->priv_flags & 4294966271U [L9974] RET (*(xcomp->comp_free))(xstate) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp={0:288230376151728272}, ppp={0:288230376151728272}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}, rcomp={4503599627370496:0}, rstate={0:0}, xcomp={0:-8}, xcomp->comp_free={9223372036854775806:12}, xstate={-9223372036854775808:0}] [L9975] EXPR xcomp->owner [L9975] CALL ldv_module_put_5(xcomp->owner) [L10926] CALL ldv_module_put(ldv_func_arg1) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, module={0:-9223370937343148032}, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10845] COND TRUE (unsigned long )module != (unsigned long )((struct module *)0) VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, module={0:-9223370937343148032}, module={0:-9223370937343148032}, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10846] COND TRUE ldv_module_refcounter <= 1 VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, module={0:-9223370937343148032}, module={0:-9223370937343148032}, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10848] CALL ldv_blast_assert() VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] [L10809] reach_error() VAL [\old(ldv_module_refcounter)=1, __this_module={0:134217728}, channel_count={62:0}, compressor_list={69:0}, compressor_list_lock={70:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, mp_protocol_compress=1, npindex_to_ethertype={65:0}, npindex_to_proto={64:0}, ppp_class={0:0}, ppp_device_fops={66:0}, ppp_mutex={60:0}, ppp_net_id={63:0}, ppp_net_ops={67:0}, ppp_netdev_ops={68:0}, ppp_unit_count={61:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 94 procedures, 1432 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 123.7s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 49.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 13 mSolverCounterUnknown, 2641 SdHoareTripleChecker+Valid, 45.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2487 mSDsluCounter, 24037 SdHoareTripleChecker+Invalid, 43.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 9 IncrementalHoareTripleChecker+Unchecked, 15391 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 469 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 8646 mSDtfsCounter, 469 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3804occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 23.3s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 388 NumberOfCodeBlocks, 388 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 277 ConstructedInterpolants, 1 QuantifiedInterpolants, 491 SizeOfPredicates, 5 NumberOfNonLiveVariables, 5225 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 18:24:18,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83f30e0-64e8-4fbf-ae16-8aebc2013c1b/bin/utaipan-eEHZpOm5b7/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