./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.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_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/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_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/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_62b0db24-5875-4d40-be15-6253e6ab99e4/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 7437c6fbbfb5f62948bcf71bcd273ee75a8686136d3aade9bfd2c415a67f0e82 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:05:24,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:05:24,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:05:24,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:05:24,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:05:24,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:05:24,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:05:24,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:05:24,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:05:24,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:05:24,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:05:24,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:05:24,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:05:24,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:05:24,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:05:24,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:05:24,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:05:24,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:05:24,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:05:24,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:05:24,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:05:24,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:05:24,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:05:24,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:05:24,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:05:24,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:05:24,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:05:24,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:05:24,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:05:24,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:05:24,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:05:24,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:05:24,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:05:24,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:05:24,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:05:24,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:05:24,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:05:24,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:05:24,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:05:24,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:05:24,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:05:24,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:05:24,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:05:24,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:05:24,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:05:24,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:05:24,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:05:24,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:05:24,703 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:05:24,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:05:24,704 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:05:24,704 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:05:24,705 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:05:24,705 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:05:24,705 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:05:24,705 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:05:24,706 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:05:24,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:05:24,706 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:05:24,706 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:05:24,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:05:24,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:05:24,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:05:24,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:05:24,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:05:24,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:05:24,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:05:24,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:05:24,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:05:24,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:05:24,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:05:24,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:05:24,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:05:24,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:05:24,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:05:24,711 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:05:24,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:05:24,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:05:24,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:05:24,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:05:24,712 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_62b0db24-5875-4d40-be15-6253e6ab99e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7437c6fbbfb5f62948bcf71bcd273ee75a8686136d3aade9bfd2c415a67f0e82 [2021-11-25 18:05:24,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:05:25,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:05:25,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:05:25,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:05:25,029 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:05:25,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-25 18:05:25,117 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/data/7844e60b6/87eee2b35c8348fdafe04211d2a49fcd/FLAG639d2dd11 [2021-11-25 18:05:26,229 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:05:26,229 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-25 18:05:26,326 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/data/7844e60b6/87eee2b35c8348fdafe04211d2a49fcd/FLAG639d2dd11 [2021-11-25 18:05:26,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/data/7844e60b6/87eee2b35c8348fdafe04211d2a49fcd [2021-11-25 18:05:26,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:05:26,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:05:26,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:05:26,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:05:26,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:05:26,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:05:26" (1/1) ... [2021-11-25 18:05:26,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2622d396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:26, skipping insertion in model container [2021-11-25 18:05:26,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:05:26" (1/1) ... [2021-11-25 18:05:26,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:05:26,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:05:35,180 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_62b0db24-5875-4d40-be15-6253e6ab99e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i[901817,901830] [2021-11-25 18:05:35,182 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_62b0db24-5875-4d40-be15-6253e6ab99e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i[901983,901996] [2021-11-25 18:05:35,183 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_62b0db24-5875-4d40-be15-6253e6ab99e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i[902147,902160] [2021-11-25 18:05:35,183 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_62b0db24-5875-4d40-be15-6253e6ab99e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i[902312,902325] [2021-11-25 18:05:35,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:05:35,302 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:05:36,377 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_62b0db24-5875-4d40-be15-6253e6ab99e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i[901817,901830] [2021-11-25 18:05:36,377 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_62b0db24-5875-4d40-be15-6253e6ab99e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i[901983,901996] [2021-11-25 18:05:36,378 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_62b0db24-5875-4d40-be15-6253e6ab99e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i[902147,902160] [2021-11-25 18:05:36,378 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_62b0db24-5875-4d40-be15-6253e6ab99e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i[902312,902325] [2021-11-25 18:05:36,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:05:36,849 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:05:36,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36 WrapperNode [2021-11-25 18:05:36,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:05:36,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:05:36,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:05:36,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:05:36,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (1/1) ... [2021-11-25 18:05:37,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (1/1) ... [2021-11-25 18:05:38,074 INFO L137 Inliner]: procedures = 716, calls = 16179, calls flagged for inlining = 391, calls inlined = 338, statements flattened = 29245 [2021-11-25 18:05:38,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:05:38,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:05:38,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:05:38,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:05:38,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (1/1) ... [2021-11-25 18:05:38,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (1/1) ... [2021-11-25 18:05:38,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (1/1) ... [2021-11-25 18:05:38,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (1/1) ... [2021-11-25 18:05:39,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (1/1) ... [2021-11-25 18:05:39,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (1/1) ... [2021-11-25 18:05:39,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (1/1) ... [2021-11-25 18:05:39,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:05:39,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:05:39,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:05:39,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:05:39,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (1/1) ... [2021-11-25 18:05:39,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:05:39,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:05:39,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:05:39,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:05:39,534 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 18:05:39,535 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 18:05:39,535 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-25 18:05:39,535 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-25 18:05:39,535 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-25 18:05:39,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-25 18:05:39,536 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-25 18:05:39,536 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-25 18:05:39,536 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-25 18:05:39,536 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-25 18:05:39,536 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-25 18:05:39,537 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-25 18:05:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-25 18:05:39,537 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-25 18:05:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:05:39,537 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:05:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-25 18:05:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-25 18:05:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 18:05:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 18:05:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:05:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:05:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-25 18:05:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-25 18:05:39,539 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-25 18:05:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-25 18:05:39,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:05:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:05:39,540 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-25 18:05:39,540 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-25 18:05:39,540 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-25 18:05:39,540 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-25 18:05:39,540 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-25 18:05:39,541 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-25 18:05:39,541 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 18:05:39,541 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 18:05:39,541 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-25 18:05:39,541 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-25 18:05:39,541 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-25 18:05:39,542 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-25 18:05:39,542 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-25 18:05:39,542 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-25 18:05:39,543 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 18:05:39,543 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 18:05:39,544 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-25 18:05:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-25 18:05:39,544 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:05:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:05:39,544 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 18:05:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 18:05:39,545 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-25 18:05:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-25 18:05:39,545 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-25 18:05:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-25 18:05:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 18:05:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 18:05:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-25 18:05:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-25 18:05:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2021-11-25 18:05:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2021-11-25 18:05:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:05:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:05:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-25 18:05:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-25 18:05:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-25 18:05:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-25 18:05:39,548 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-25 18:05:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-25 18:05:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-25 18:05:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-25 18:05:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:05:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:05:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:05:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:05:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:05:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:05:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 18:05:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 18:05:39,551 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:05:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:05:39,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:05:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:05:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 18:05:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 18:05:39,553 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 18:05:39,553 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 18:05:39,553 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 18:05:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 18:05:39,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:05:39,554 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 18:05:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 18:05:39,554 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-25 18:05:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-25 18:05:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-25 18:05:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-25 18:05:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-25 18:05:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-25 18:05:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-25 18:05:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-25 18:05:39,556 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-25 18:05:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-25 18:05:39,556 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-25 18:05:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-25 18:05:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:05:39,557 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:05:39,558 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-25 18:05:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-25 18:05:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-25 18:05:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-25 18:05:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-25 18:05:39,562 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-25 18:05:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:05:39,562 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:05:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 18:05:39,562 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 18:05:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-25 18:05:39,569 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-25 18:05:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-25 18:05:39,569 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-25 18:05:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:05:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-25 18:05:39,570 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-25 18:05:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-25 18:05:39,570 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-25 18:05:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-25 18:05:39,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-25 18:05:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-25 18:05:39,571 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-25 18:05:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:05:39,571 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:05:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-25 18:05:39,571 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-25 18:05:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:05:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:05:39,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:05:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-25 18:05:39,572 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-25 18:05:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:05:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:05:39,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:05:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-25 18:05:39,573 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-25 18:05:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-25 18:05:39,573 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-25 18:05:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-25 18:05:39,573 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-25 18:05:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:05:39,573 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:05:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-25 18:05:39,574 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-25 18:05:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-25 18:05:39,574 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-25 18:05:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:05:39,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:05:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-25 18:05:39,575 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-25 18:05:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 18:05:39,575 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 18:05:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:05:39,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:05:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-25 18:05:39,575 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-25 18:05:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:05:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:05:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-25 18:05:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-25 18:05:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-25 18:05:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-25 18:05:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-25 18:05:39,577 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-25 18:05:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:05:39,577 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:05:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-25 18:05:39,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-25 18:05:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-25 18:05:39,577 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-25 18:05:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-25 18:05:39,578 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-25 18:05:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-25 18:05:39,578 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-25 18:05:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-25 18:05:39,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-25 18:05:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:05:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-25 18:05:39,579 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-25 18:05:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-25 18:05:39,579 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-25 18:05:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:05:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 18:05:39,579 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 18:05:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:05:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:05:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:05:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:05:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:05:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-25 18:05:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-25 18:05:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:05:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-25 18:05:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-25 18:05:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:05:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:05:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-25 18:05:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-25 18:05:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-25 18:05:39,582 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-25 18:05:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-25 18:05:39,582 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-25 18:05:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-25 18:05:39,582 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-25 18:05:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:05:39,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:05:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-25 18:05:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-25 18:05:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-25 18:05:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-25 18:05:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-25 18:05:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-25 18:05:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 18:05:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 18:05:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 18:05:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 18:05:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:05:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:05:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-25 18:05:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-25 18:05:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 18:05:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 18:05:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-25 18:05:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-25 18:05:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-25 18:05:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-25 18:05:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:05:39,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:05:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-25 18:05:39,590 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-25 18:05:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-25 18:05:39,590 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-25 18:05:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-25 18:05:39,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-25 18:05:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-25 18:05:39,591 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-25 18:05:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-25 18:05:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-25 18:05:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-25 18:05:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-25 18:05:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-25 18:05:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-25 18:05:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 18:05:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 18:05:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 18:05:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 18:05:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-25 18:05:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-25 18:05:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-25 18:05:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-25 18:05:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-25 18:05:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-25 18:05:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-25 18:05:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-25 18:05:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:05:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:05:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-25 18:05:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-25 18:05:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-25 18:05:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-25 18:05:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-25 18:05:39,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-25 18:05:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-25 18:05:39,596 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-25 18:05:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-25 18:05:39,596 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-25 18:05:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 18:05:39,596 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 18:05:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-25 18:05:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-25 18:05:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:05:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:05:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:05:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:05:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 18:05:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 18:05:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 18:05:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 18:05:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 18:05:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 18:05:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-25 18:05:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-25 18:05:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:05:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:05:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 18:05:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 18:05:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 18:05:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:05:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:05:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2021-11-25 18:05:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2021-11-25 18:05:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-25 18:05:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-25 18:05:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 18:05:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 18:05:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-25 18:05:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-25 18:05:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 18:05:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 18:05:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:05:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:05:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-25 18:05:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-25 18:05:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-25 18:05:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-25 18:05:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-25 18:05:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-25 18:05:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-25 18:05:39,602 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-25 18:05:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:05:39,602 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:05:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-25 18:05:39,602 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-25 18:05:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-25 18:05:39,603 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-25 18:05:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-25 18:05:39,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-25 18:05:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 18:05:39,603 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 18:05:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-25 18:05:39,603 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-25 18:05:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-25 18:05:39,604 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-25 18:05:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-25 18:05:39,604 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-25 18:05:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:05:39,604 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:05:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 18:05:39,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 18:05:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 18:05:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 18:05:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:05:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:05:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:05:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-25 18:05:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-25 18:05:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:05:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:05:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-25 18:05:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-25 18:05:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:05:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-25 18:05:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-25 18:05:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-25 18:05:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-25 18:05:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-25 18:05:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-25 18:05:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-25 18:05:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-25 18:05:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-25 18:05:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-25 18:05:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-25 18:05:39,608 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-25 18:05:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:05:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-25 18:05:39,608 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-25 18:05:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-25 18:05:39,608 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-25 18:05:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-25 18:05:39,609 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-25 18:05:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 18:05:39,609 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 18:05:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-25 18:05:39,609 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-25 18:05:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 18:05:39,609 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 18:05:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-25 18:05:39,610 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-25 18:05:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:05:39,610 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:05:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-25 18:05:39,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-25 18:05:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:05:39,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:05:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 18:05:39,611 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 18:05:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-25 18:05:39,611 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-25 18:05:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 18:05:39,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 18:05:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-25 18:05:39,612 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-25 18:05:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-25 18:05:39,612 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-25 18:05:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-25 18:05:39,612 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-25 18:05:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-25 18:05:39,612 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-25 18:05:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-25 18:05:39,613 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-25 18:05:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-25 18:05:39,613 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-25 18:05:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-25 18:05:39,613 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-25 18:05:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-25 18:05:39,613 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-25 18:05:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 18:05:39,614 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 18:05:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:05:39,614 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:05:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:05:39,614 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:05:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-25 18:05:39,614 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-25 18:05:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-25 18:05:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-25 18:05:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-25 18:05:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-25 18:05:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-25 18:05:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-25 18:05:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-25 18:05:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-25 18:05:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-25 18:05:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-25 18:05:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:05:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:05:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-25 18:05:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-25 18:05:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 18:05:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 18:05:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-25 18:05:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-25 18:05:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:05:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:05:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-25 18:05:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-25 18:05:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-25 18:05:39,618 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-25 18:05:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:05:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-25 18:05:39,618 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-25 18:05:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:05:39,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:05:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-25 18:05:39,619 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-25 18:05:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-25 18:05:39,619 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-25 18:05:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-25 18:05:39,619 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-25 18:05:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:05:39,619 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:05:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-25 18:05:39,620 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-25 18:05:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-25 18:05:39,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-25 18:05:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-25 18:05:39,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-25 18:05:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-25 18:05:39,620 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-25 18:05:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 18:05:39,621 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 18:05:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-25 18:05:39,621 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-25 18:05:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-25 18:05:39,621 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-25 18:05:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-25 18:05:39,622 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-25 18:05:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-25 18:05:39,622 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-25 18:05:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 18:05:39,622 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 18:05:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_17 [2021-11-25 18:05:39,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_17 [2021-11-25 18:05:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-25 18:05:39,623 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-25 18:05:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-25 18:05:39,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-25 18:05:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-25 18:05:39,623 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-25 18:05:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:05:39,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:05:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 18:05:39,624 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 18:05:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 18:05:39,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 18:05:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 18:05:39,624 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 18:05:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-25 18:05:39,624 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-25 18:05:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-25 18:05:39,625 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-25 18:05:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 18:05:39,625 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 18:05:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-25 18:05:39,625 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-25 18:05:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 18:05:39,626 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 18:05:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-25 18:05:39,626 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-25 18:05:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 18:05:39,626 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 18:05:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 18:05:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:05:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-25 18:05:39,627 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-25 18:05:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-25 18:05:39,627 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-25 18:05:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:05:39,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:05:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-25 18:05:41,756 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:05:41,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:05:43,164 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:06:47,762 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:06:55,819 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:06:55,819 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-25 18:06:55,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:06:55 BoogieIcfgContainer [2021-11-25 18:06:55,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:06:55,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:06:55,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:06:55,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:06:55,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:05:26" (1/3) ... [2021-11-25 18:06:55,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f3814d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:06:55, skipping insertion in model container [2021-11-25 18:06:55,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:36" (2/3) ... [2021-11-25 18:06:55,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f3814d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:06:55, skipping insertion in model container [2021-11-25 18:06:55,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:06:55" (3/3) ... [2021-11-25 18:06:55,845 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-mutex_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-25 18:06:55,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:06:55,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:06:55,937 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:06:55,949 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 18:06:55,949 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:06:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 6544 states, 4177 states have (on average 1.3356475939669619) internal successors, (5579), 4283 states have internal predecessors, (5579), 2125 states have call successors, (2125), 243 states have call predecessors, (2125), 242 states have return successors, (2121), 2108 states have call predecessors, (2121), 2121 states have call successors, (2121) [2021-11-25 18:06:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 18:06:56,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:56,087 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-25 18:06:56,087 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:06:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:56,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2041861748, now seen corresponding path program 1 times [2021-11-25 18:06:56,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:56,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677774882] [2021-11-25 18:06:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:56,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 18:06:57,626 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677774882] [2021-11-25 18:06:57,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677774882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:57,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:57,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:06:57,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096924522] [2021-11-25 18:06:57,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:57,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:06:57,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:57,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:06:57,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:06:57,699 INFO L87 Difference]: Start difference. First operand has 6544 states, 4177 states have (on average 1.3356475939669619) internal successors, (5579), 4283 states have internal predecessors, (5579), 2125 states have call successors, (2125), 243 states have call predecessors, (2125), 242 states have return successors, (2121), 2108 states have call predecessors, (2121), 2121 states have call successors, (2121) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:07:01,042 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 18:07:08,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:14,153 WARN L534 Checker$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 18:07:16,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:18,546 WARN L534 Checker$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 18:07:22,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:24,807 WARN L534 Checker$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 18:07:34,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:36,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:39,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:42,126 WARN L534 Checker$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 18:07:42,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:42,479 INFO L93 Difference]: Finished difference Result 17304 states and 25981 transitions. [2021-11-25 18:07:42,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:07:42,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2021-11-25 18:07:42,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:42,631 INFO L225 Difference]: With dead ends: 17304 [2021-11-25 18:07:42,631 INFO L226 Difference]: Without dead ends: 10764 [2021-11-25 18:07:42,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:07:42,716 INFO L933 BasicCegarLoop]: 10764 mSDtfsCounter, 6302 mSDsluCounter, 32970 mSDsCounter, 0 mSdLazyCounter, 3318 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6307 SdHoareTripleChecker+Valid, 41262 SdHoareTripleChecker+Invalid, 3328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3318 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:42,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6307 Valid, 41262 Invalid, 3328 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3318 Invalid, 8 Unknown, 0 Unchecked, 43.8s Time] [2021-11-25 18:07:42,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10764 states. [2021-11-25 18:07:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10764 to 10756. [2021-11-25 18:07:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10756 states, 6830 states have (on average 1.32796486090776) internal successors, (9070), 6992 states have internal predecessors, (9070), 3498 states have call successors, (3498), 429 states have call predecessors, (3498), 427 states have return successors, (3494), 3477 states have call predecessors, (3494), 3492 states have call successors, (3494) [2021-11-25 18:07:43,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10756 states to 10756 states and 16062 transitions. [2021-11-25 18:07:43,943 INFO L78 Accepts]: Start accepts. Automaton has 10756 states and 16062 transitions. Word has length 35 [2021-11-25 18:07:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:43,944 INFO L470 AbstractCegarLoop]: Abstraction has 10756 states and 16062 transitions. [2021-11-25 18:07:43,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:07:43,946 INFO L276 IsEmpty]: Start isEmpty. Operand 10756 states and 16062 transitions. [2021-11-25 18:07:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 18:07:43,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:43,951 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-25 18:07:43,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:07:43,951 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:07:43,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:43,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1745534704, now seen corresponding path program 1 times [2021-11-25 18:07:43,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:43,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768563122] [2021-11-25 18:07:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:43,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 18:07:44,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:44,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768563122] [2021-11-25 18:07:44,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768563122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:44,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:44,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:07:44,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851347607] [2021-11-25 18:07:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:44,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:07:44,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:44,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:07:44,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:07:44,790 INFO L87 Difference]: Start difference. First operand 10756 states and 16062 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 18:07:48,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:58,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:03,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:05,053 WARN L534 Checker$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 18:08:07,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:12,638 WARN L534 Checker$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 18:08:22,380 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 18:08:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:23,411 INFO L93 Difference]: Finished difference Result 10770 states and 16078 transitions. [2021-11-25 18:08:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:08:23,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2021-11-25 18:08:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:23,526 INFO L225 Difference]: With dead ends: 10770 [2021-11-25 18:08:23,526 INFO L226 Difference]: Without dead ends: 10766 [2021-11-25 18:08:23,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:08:23,541 INFO L933 BasicCegarLoop]: 10856 mSDtfsCounter, 6287 mSDsluCounter, 33144 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6290 SdHoareTripleChecker+Valid, 41519 SdHoareTripleChecker+Invalid, 3340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:23,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6290 Valid, 41519 Invalid, 3340 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3332 Invalid, 6 Unknown, 0 Unchecked, 38.0s Time] [2021-11-25 18:08:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10766 states. [2021-11-25 18:08:24,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10766 to 10758. [2021-11-25 18:08:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10758 states, 6832 states have (on average 1.327722482435597) internal successors, (9071), 6993 states have internal predecessors, (9071), 3498 states have call successors, (3498), 430 states have call predecessors, (3498), 427 states have return successors, (3494), 3477 states have call predecessors, (3494), 3492 states have call successors, (3494) [2021-11-25 18:08:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10758 states to 10758 states and 16063 transitions. [2021-11-25 18:08:24,496 INFO L78 Accepts]: Start accepts. Automaton has 10758 states and 16063 transitions. Word has length 40 [2021-11-25 18:08:24,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:24,496 INFO L470 AbstractCegarLoop]: Abstraction has 10758 states and 16063 transitions. [2021-11-25 18:08:24,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 18:08:24,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10758 states and 16063 transitions. [2021-11-25 18:08:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 18:08:24,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:24,506 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-25 18:08:24,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:08:24,507 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:08:24,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:24,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1959679339, now seen corresponding path program 1 times [2021-11-25 18:08:24,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:24,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601874259] [2021-11-25 18:08:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:24,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 18:08:25,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:25,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601874259] [2021-11-25 18:08:25,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601874259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:25,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:25,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:08:25,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176090771] [2021-11-25 18:08:25,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:25,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:08:25,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:25,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:08:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:08:25,472 INFO L87 Difference]: Start difference. First operand 10758 states and 16063 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 18:08:28,607 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 18:08:38,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:40,124 WARN L534 Checker$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 18:08:41,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:43,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:45,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:47,790 WARN L534 Checker$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 18:08:58,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:03,322 WARN L534 Checker$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 18:09:05,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:08,286 WARN L534 Checker$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 18:09:10,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:12,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:12,868 INFO L93 Difference]: Finished difference Result 10769 states and 16076 transitions. [2021-11-25 18:09:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:09:12,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2021-11-25 18:09:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:12,969 INFO L225 Difference]: With dead ends: 10769 [2021-11-25 18:09:12,969 INFO L226 Difference]: Without dead ends: 10724 [2021-11-25 18:09:12,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:09:12,981 INFO L933 BasicCegarLoop]: 10837 mSDtfsCounter, 6280 mSDsluCounter, 33112 mSDsCounter, 0 mSdLazyCounter, 3326 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6280 SdHoareTripleChecker+Valid, 41464 SdHoareTripleChecker+Invalid, 3339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3326 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:12,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6280 Valid, 41464 Invalid, 3339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3326 Invalid, 11 Unknown, 0 Unchecked, 46.9s Time] [2021-11-25 18:09:13,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10724 states. [2021-11-25 18:09:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10724 to 10715. [2021-11-25 18:09:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10715 states, 6809 states have (on average 1.3280951681597886) internal successors, (9043), 6968 states have internal predecessors, (9043), 3480 states have call successors, (3480), 426 states have call predecessors, (3480), 425 states have return successors, (3477), 3462 states have call predecessors, (3477), 3477 states have call successors, (3477) [2021-11-25 18:09:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10715 states to 10715 states and 16000 transitions. [2021-11-25 18:09:14,026 INFO L78 Accepts]: Start accepts. Automaton has 10715 states and 16000 transitions. Word has length 51 [2021-11-25 18:09:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:14,027 INFO L470 AbstractCegarLoop]: Abstraction has 10715 states and 16000 transitions. [2021-11-25 18:09:14,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 18:09:14,027 INFO L276 IsEmpty]: Start isEmpty. Operand 10715 states and 16000 transitions. [2021-11-25 18:09:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-25 18:09:14,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:14,051 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:09:14,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:09:14,053 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:14,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:14,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1346056353, now seen corresponding path program 1 times [2021-11-25 18:09:14,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:14,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034664116] [2021-11-25 18:09:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:14,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2021-11-25 18:09:15,516 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:15,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034664116] [2021-11-25 18:09:15,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034664116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:15,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:15,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:09:15,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038232864] [2021-11-25 18:09:15,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:15,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:09:15,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:09:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:09:15,521 INFO L87 Difference]: Start difference. First operand 10715 states and 16000 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-25 18:09:19,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:27,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:29,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:30,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:32,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:35,065 WARN L534 Checker$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 18:09:39,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:45,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:47,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:09:49,700 WARN L534 Checker$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 18:09:51,925 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 18:09:52,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:52,193 INFO L93 Difference]: Finished difference Result 21876 states and 32717 transitions. [2021-11-25 18:09:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:09:52,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 242 [2021-11-25 18:09:52,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:52,271 INFO L225 Difference]: With dead ends: 21876 [2021-11-25 18:09:52,271 INFO L226 Difference]: Without dead ends: 11175 [2021-11-25 18:09:52,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:09:52,359 INFO L933 BasicCegarLoop]: 9239 mSDtfsCounter, 289 mSDsluCounter, 19840 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 90 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 27460 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:52,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 27460 Invalid, 2560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2462 Invalid, 8 Unknown, 0 Unchecked, 36.1s Time] [2021-11-25 18:09:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11175 states. [2021-11-25 18:09:53,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11175 to 10719. [2021-11-25 18:09:53,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 6813 states have (on average 1.3279025392631734) internal successors, (9047), 6972 states have internal predecessors, (9047), 3480 states have call successors, (3480), 426 states have call predecessors, (3480), 425 states have return successors, (3477), 3462 states have call predecessors, (3477), 3477 states have call successors, (3477) [2021-11-25 18:09:53,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 16004 transitions. [2021-11-25 18:09:53,268 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 16004 transitions. Word has length 242 [2021-11-25 18:09:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:53,270 INFO L470 AbstractCegarLoop]: Abstraction has 10719 states and 16004 transitions. [2021-11-25 18:09:53,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-25 18:09:53,270 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 16004 transitions. [2021-11-25 18:09:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-25 18:09:53,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:53,286 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:09:53,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:09:53,286 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:53,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:53,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1784626607, now seen corresponding path program 1 times [2021-11-25 18:09:53,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:53,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756041182] [2021-11-25 18:09:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:53,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2021-11-25 18:09:54,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756041182] [2021-11-25 18:09:54,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756041182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:54,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:54,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:09:54,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208735367] [2021-11-25 18:09:54,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:54,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:09:54,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:54,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:09:54,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:09:54,503 INFO L87 Difference]: Start difference. First operand 10719 states and 16004 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-25 18:09:58,622 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 18:10:07,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:10:09,683 WARN L534 Checker$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 18:10:11,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:10:16,717 WARN L534 Checker$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 18:10:23,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:10:25,854 WARN L534 Checker$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 18:10:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:26,508 INFO L93 Difference]: Finished difference Result 17240 states and 25800 transitions. [2021-11-25 18:10:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:10:26,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) Word has length 259 [2021-11-25 18:10:26,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:26,576 INFO L225 Difference]: With dead ends: 17240 [2021-11-25 18:10:26,576 INFO L226 Difference]: Without dead ends: 10727 [2021-11-25 18:10:26,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:10:26,613 INFO L933 BasicCegarLoop]: 8980 mSDtfsCounter, 0 mSDsluCounter, 29335 mSDsCounter, 0 mSdLazyCounter, 3210 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35917 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3210 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:26,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35917 Invalid, 3217 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 3210 Invalid, 7 Unknown, 0 Unchecked, 31.6s Time] [2021-11-25 18:10:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10727 states. [2021-11-25 18:10:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10727 to 10727. [2021-11-25 18:10:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10727 states, 6819 states have (on average 1.3276140196509751) internal successors, (9053), 6978 states have internal predecessors, (9053), 3480 states have call successors, (3480), 426 states have call predecessors, (3480), 427 states have return successors, (3495), 3464 states have call predecessors, (3495), 3477 states have call successors, (3495) [2021-11-25 18:10:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10727 states to 10727 states and 16028 transitions. [2021-11-25 18:10:27,545 INFO L78 Accepts]: Start accepts. Automaton has 10727 states and 16028 transitions. Word has length 259 [2021-11-25 18:10:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:27,547 INFO L470 AbstractCegarLoop]: Abstraction has 10727 states and 16028 transitions. [2021-11-25 18:10:27,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-25 18:10:27,547 INFO L276 IsEmpty]: Start isEmpty. Operand 10727 states and 16028 transitions. [2021-11-25 18:10:27,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-25 18:10:27,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:27,563 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:27,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:10:27,563 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:10:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:27,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1625800679, now seen corresponding path program 1 times [2021-11-25 18:10:27,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:27,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623908963] [2021-11-25 18:10:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:27,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2021-11-25 18:10:28,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:28,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623908963] [2021-11-25 18:10:28,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623908963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:10:28,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:10:28,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:10:28,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612268576] [2021-11-25 18:10:28,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:10:28,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:10:28,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:10:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:10:28,758 INFO L87 Difference]: Start difference. First operand 10727 states and 16028 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 18:10:31,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:10:34,385 WARN L534 Checker$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 18:10:43,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:10:45,123 WARN L534 Checker$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 18:10:47,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:10:51,431 WARN L534 Checker$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 18:11:01,477 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 18:11:02,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:02,095 INFO L93 Difference]: Finished difference Result 13951 states and 20629 transitions. [2021-11-25 18:11:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:11:02,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 272 [2021-11-25 18:11:02,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:02,180 INFO L225 Difference]: With dead ends: 13951 [2021-11-25 18:11:02,180 INFO L226 Difference]: Without dead ends: 13949 [2021-11-25 18:11:02,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:11:02,190 INFO L933 BasicCegarLoop]: 10098 mSDtfsCounter, 3890 mSDsluCounter, 31575 mSDsCounter, 0 mSdLazyCounter, 3244 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3896 SdHoareTripleChecker+Valid, 39251 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3244 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:02,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3896 Valid, 39251 Invalid, 3253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3244 Invalid, 7 Unknown, 0 Unchecked, 32.9s Time] [2021-11-25 18:11:02,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13949 states. [2021-11-25 18:11:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13949 to 13911. [2021-11-25 18:11:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13911 states, 8745 states have (on average 1.3172098341909662) internal successors, (11519), 8968 states have internal predecessors, (11519), 4520 states have call successors, (4520), 645 states have call predecessors, (4520), 645 states have return successors, (4540), 4498 states have call predecessors, (4540), 4514 states have call successors, (4540) [2021-11-25 18:11:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13911 states to 13911 states and 20579 transitions. [2021-11-25 18:11:03,422 INFO L78 Accepts]: Start accepts. Automaton has 13911 states and 20579 transitions. Word has length 272 [2021-11-25 18:11:03,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:03,424 INFO L470 AbstractCegarLoop]: Abstraction has 13911 states and 20579 transitions. [2021-11-25 18:11:03,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 18:11:03,425 INFO L276 IsEmpty]: Start isEmpty. Operand 13911 states and 20579 transitions. [2021-11-25 18:11:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-25 18:11:03,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:03,442 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:03,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:11:03,443 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash -187340427, now seen corresponding path program 1 times [2021-11-25 18:11:03,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:03,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219492090] [2021-11-25 18:11:03,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:03,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2021-11-25 18:11:04,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:04,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219492090] [2021-11-25 18:11:04,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219492090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:11:04,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:11:04,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:11:04,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762409930] [2021-11-25 18:11:04,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:11:04,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:11:04,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:04,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:11:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:11:04,717 INFO L87 Difference]: Start difference. First operand 13911 states and 20579 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-25 18:11:08,288 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 18:11:10,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:17,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:19,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:21,643 WARN L534 Checker$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 18:11:23,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:27,734 WARN L534 Checker$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 18:11:36,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:39,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:42,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:44,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:47,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:49,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:51,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:52,115 INFO L93 Difference]: Finished difference Result 16825 states and 25001 transitions. [2021-11-25 18:11:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:11:52,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 277 [2021-11-25 18:11:52,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:52,218 INFO L225 Difference]: With dead ends: 16825 [2021-11-25 18:11:52,218 INFO L226 Difference]: Without dead ends: 16821 [2021-11-25 18:11:52,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:11:52,231 INFO L933 BasicCegarLoop]: 10476 mSDtfsCounter, 6896 mSDsluCounter, 32313 mSDsCounter, 0 mSdLazyCounter, 3217 mSolverCounterSat, 2 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6899 SdHoareTripleChecker+Valid, 40379 SdHoareTripleChecker+Invalid, 3231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3217 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:52,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6899 Valid, 40379 Invalid, 3231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3217 Invalid, 12 Unknown, 0 Unchecked, 46.9s Time] [2021-11-25 18:11:52,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16821 states. [2021-11-25 18:11:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16821 to 16812. [2021-11-25 18:11:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16812 states, 10642 states have (on average 1.3218380003758692) internal successors, (14067), 10885 states have internal predecessors, (14067), 5449 states have call successors, (5449), 720 states have call predecessors, (5449), 720 states have return successors, (5471), 5427 states have call predecessors, (5471), 5443 states have call successors, (5471) [2021-11-25 18:11:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16812 states to 16812 states and 24987 transitions. [2021-11-25 18:11:53,687 INFO L78 Accepts]: Start accepts. Automaton has 16812 states and 24987 transitions. Word has length 277 [2021-11-25 18:11:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:53,688 INFO L470 AbstractCegarLoop]: Abstraction has 16812 states and 24987 transitions. [2021-11-25 18:11:53,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-25 18:11:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 16812 states and 24987 transitions. [2021-11-25 18:11:53,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-25 18:11:53,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:53,715 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:53,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:11:53,716 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:53,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:53,717 INFO L85 PathProgramCache]: Analyzing trace with hash 578199655, now seen corresponding path program 1 times [2021-11-25 18:11:53,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:53,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337732900] [2021-11-25 18:11:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:53,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2021-11-25 18:11:55,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:55,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337732900] [2021-11-25 18:11:55,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337732900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:11:55,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:11:55,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:11:55,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275236478] [2021-11-25 18:11:55,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:11:55,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:11:55,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:55,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:11:55,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:11:55,205 INFO L87 Difference]: Start difference. First operand 16812 states and 24987 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-25 18:11:58,879 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 18:12:06,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:08,249 WARN L534 Checker$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 18:12:10,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:15,161 WARN L534 Checker$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 18:12:24,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:27,307 WARN L534 Checker$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 18:12:29,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:31,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:34,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:34,360 INFO L93 Difference]: Finished difference Result 16817 states and 24992 transitions. [2021-11-25 18:12:34,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:12:34,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 282 [2021-11-25 18:12:34,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:34,452 INFO L225 Difference]: With dead ends: 16817 [2021-11-25 18:12:34,452 INFO L226 Difference]: Without dead ends: 16774 [2021-11-25 18:12:34,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:12:34,466 INFO L933 BasicCegarLoop]: 10475 mSDtfsCounter, 6862 mSDsluCounter, 32308 mSDsCounter, 0 mSdLazyCounter, 3210 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6864 SdHoareTripleChecker+Valid, 40378 SdHoareTripleChecker+Invalid, 3222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3210 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:34,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6864 Valid, 40378 Invalid, 3222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3210 Invalid, 10 Unknown, 0 Unchecked, 38.6s Time] [2021-11-25 18:12:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16774 states. [2021-11-25 18:12:35,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16774 to 16771. [2021-11-25 18:12:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16771 states, 10620 states have (on average 1.3221280602636536) internal successors, (14041), 10861 states have internal predecessors, (14041), 5432 states have call successors, (5432), 716 states have call predecessors, (5432), 718 states have return successors, (5457), 5413 states have call predecessors, (5457), 5429 states have call successors, (5457) [2021-11-25 18:12:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16771 states to 16771 states and 24930 transitions. [2021-11-25 18:12:35,907 INFO L78 Accepts]: Start accepts. Automaton has 16771 states and 24930 transitions. Word has length 282 [2021-11-25 18:12:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:35,908 INFO L470 AbstractCegarLoop]: Abstraction has 16771 states and 24930 transitions. [2021-11-25 18:12:35,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-25 18:12:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 16771 states and 24930 transitions. [2021-11-25 18:12:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2021-11-25 18:12:36,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:36,048 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 14, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:12:36,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:12:36,049 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1093942826, now seen corresponding path program 1 times [2021-11-25 18:12:36,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:12:36,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362974513] [2021-11-25 18:12:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:36,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:12:37,013 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:12:37,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186299297] [2021-11-25 18:12:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:37,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:37,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:12:37,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:12:37,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:12:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:42,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 22117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:12:42,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-11-25 18:12:43,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:12:43,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:12:43,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362974513] [2021-11-25 18:12:43,710 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:12:43,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186299297] [2021-11-25 18:12:43,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186299297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:12:43,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:12:43,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:12:43,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575078908] [2021-11-25 18:12:43,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:12:43,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:12:43,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:12:43,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:12:43,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:12:43,718 INFO L87 Difference]: Start difference. First operand 16771 states and 24930 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 3 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) [2021-11-25 18:12:47,301 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 18:12:52,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:55,608 WARN L534 Checker$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 18:12:57,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:00,916 WARN L534 Checker$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 18:13:07,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:11,874 WARN L534 Checker$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 18:13:12,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:13:12,214 INFO L93 Difference]: Finished difference Result 24557 states and 36739 transitions. [2021-11-25 18:13:12,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:13:12,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 3 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) Word has length 630 [2021-11-25 18:13:12,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:13:12,304 INFO L225 Difference]: With dead ends: 24557 [2021-11-25 18:13:12,304 INFO L226 Difference]: Without dead ends: 18040 [2021-11-25 18:13:12,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 628 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 18:13:12,341 INFO L933 BasicCegarLoop]: 10208 mSDtfsCounter, 1085 mSDsluCounter, 10047 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 19457 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:13:12,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 19457 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1764 Invalid, 6 Unknown, 0 Unchecked, 27.9s Time] [2021-11-25 18:13:12,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18040 states. [2021-11-25 18:13:13,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18040 to 16776. [2021-11-25 18:13:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16776 states, 10624 states have (on average 1.3221009036144578) internal successors, (14046), 10865 states have internal predecessors, (14046), 5433 states have call successors, (5433), 716 states have call predecessors, (5433), 718 states have return successors, (5458), 5414 states have call predecessors, (5458), 5430 states have call successors, (5458) [2021-11-25 18:13:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16776 states to 16776 states and 24937 transitions. [2021-11-25 18:13:13,549 INFO L78 Accepts]: Start accepts. Automaton has 16776 states and 24937 transitions. Word has length 630 [2021-11-25 18:13:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:13:13,552 INFO L470 AbstractCegarLoop]: Abstraction has 16776 states and 24937 transitions. [2021-11-25 18:13:13,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 3 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) [2021-11-25 18:13:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 16776 states and 24937 transitions. [2021-11-25 18:13:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2021-11-25 18:13:13,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:13:13,634 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:13,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:13:13,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:13:13,859 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:13:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:13:13,860 INFO L85 PathProgramCache]: Analyzing trace with hash -970687540, now seen corresponding path program 1 times [2021-11-25 18:13:13,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:13:13,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973269360] [2021-11-25 18:13:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:13:13,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:13:14,749 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:13:14,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570563291] [2021-11-25 18:13:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:13:14,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:13:14,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:13:14,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:13:14,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:13:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:13:20,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 22587 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:13:20,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:13:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2021-11-25 18:13:21,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:13:21,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:13:21,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973269360] [2021-11-25 18:13:21,886 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:13:21,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570563291] [2021-11-25 18:13:21,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570563291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:13:21,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:13:21,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:13:21,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236471040] [2021-11-25 18:13:21,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:13:21,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:13:21,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:13:21,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:13:21,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:13:21,890 INFO L87 Difference]: Start difference. First operand 16776 states and 24937 transitions. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2021-11-25 18:13:25,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:30,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:34,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:36,212 WARN L534 Checker$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 18:13:38,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:42,682 WARN L534 Checker$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 18:13:47,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:50,670 WARN L534 Checker$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 18:13:52,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:56,591 WARN L534 Checker$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 18:13:58,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:01,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:14:01,329 INFO L93 Difference]: Finished difference Result 29712 states and 44305 transitions. [2021-11-25 18:14:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:14:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 674 [2021-11-25 18:14:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:14:01,429 INFO L225 Difference]: With dead ends: 29712 [2021-11-25 18:14:01,429 INFO L226 Difference]: Without dead ends: 17598 [2021-11-25 18:14:01,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:14:01,493 INFO L933 BasicCegarLoop]: 9428 mSDtfsCounter, 449 mSDsluCounter, 19895 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 113 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 27703 SdHoareTripleChecker+Invalid, 2630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:14:01,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 27703 Invalid, 2630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2508 Invalid, 9 Unknown, 0 Unchecked, 38.7s Time] [2021-11-25 18:14:01,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17598 states. [2021-11-25 18:14:02,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17598 to 16780. [2021-11-25 18:14:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16780 states, 10628 states have (on average 1.3219796763266842) internal successors, (14050), 10869 states have internal predecessors, (14050), 5433 states have call successors, (5433), 716 states have call predecessors, (5433), 718 states have return successors, (5458), 5414 states have call predecessors, (5458), 5430 states have call successors, (5458) [2021-11-25 18:14:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16780 states to 16780 states and 24941 transitions. [2021-11-25 18:14:02,863 INFO L78 Accepts]: Start accepts. Automaton has 16780 states and 24941 transitions. Word has length 674 [2021-11-25 18:14:02,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:14:02,864 INFO L470 AbstractCegarLoop]: Abstraction has 16780 states and 24941 transitions. [2021-11-25 18:14:02,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2021-11-25 18:14:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 16780 states and 24941 transitions. [2021-11-25 18:14:02,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2021-11-25 18:14:02,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:14:02,935 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:02,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:14:03,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:14:03,139 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:14:03,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:14:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash -12143506, now seen corresponding path program 1 times [2021-11-25 18:14:03,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:14:03,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617896163] [2021-11-25 18:14:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:03,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:14:04,165 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:14:04,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916422728] [2021-11-25 18:14:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:04,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:14:04,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:14:04,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:14:04,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:14:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:14:09,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 22850 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:14:09,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:14:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2021-11-25 18:14:11,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:14:11,487 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:14:11,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617896163] [2021-11-25 18:14:11,487 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:14:11,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916422728] [2021-11-25 18:14:11,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916422728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:14:11,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:14:11,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:14:11,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235858673] [2021-11-25 18:14:11,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:14:11,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:14:11,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:14:11,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:14:11,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:14:11,490 INFO L87 Difference]: Start difference. First operand 16780 states and 24941 transitions. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2021-11-25 18:14:14,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:16,511 WARN L534 Checker$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 18:14:25,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:28,083 WARN L534 Checker$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 18:14:29,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:31,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:33,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:35,770 WARN L534 Checker$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 18:14:39,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:48,785 WARN L534 Checker$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 18:14:51,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:53,726 WARN L534 Checker$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 18:14:54,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:14:54,035 INFO L93 Difference]: Finished difference Result 29240 states and 43563 transitions. [2021-11-25 18:14:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:14:54,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 692 [2021-11-25 18:14:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:14:54,111 INFO L225 Difference]: With dead ends: 29240 [2021-11-25 18:14:54,111 INFO L226 Difference]: Without dead ends: 17122 [2021-11-25 18:14:54,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:14:54,153 INFO L933 BasicCegarLoop]: 9231 mSDtfsCounter, 329 mSDsluCounter, 19679 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 123 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 27312 SdHoareTripleChecker+Invalid, 2568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:14:54,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 27312 Invalid, 2568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2435 Invalid, 10 Unknown, 0 Unchecked, 41.8s Time] [2021-11-25 18:14:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17122 states. [2021-11-25 18:14:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17122 to 16784. [2021-11-25 18:14:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16784 states, 10632 states have (on average 1.3218585402558314) internal successors, (14054), 10873 states have internal predecessors, (14054), 5433 states have call successors, (5433), 716 states have call predecessors, (5433), 718 states have return successors, (5458), 5414 states have call predecessors, (5458), 5430 states have call successors, (5458) [2021-11-25 18:14:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16784 states to 16784 states and 24945 transitions. [2021-11-25 18:14:55,161 INFO L78 Accepts]: Start accepts. Automaton has 16784 states and 24945 transitions. Word has length 692 [2021-11-25 18:14:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:14:55,162 INFO L470 AbstractCegarLoop]: Abstraction has 16784 states and 24945 transitions. [2021-11-25 18:14:55,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2021-11-25 18:14:55,163 INFO L276 IsEmpty]: Start isEmpty. Operand 16784 states and 24945 transitions. [2021-11-25 18:14:55,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2021-11-25 18:14:55,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:14:55,223 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:55,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:14:55,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 18:14:55,439 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:14:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:14:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2065073641, now seen corresponding path program 1 times [2021-11-25 18:14:55,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:14:55,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195103619] [2021-11-25 18:14:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:55,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:14:56,401 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:14:56,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115382860] [2021-11-25 18:14:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:56,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:14:56,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:14:56,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:14:56,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:15:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:15:02,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 22896 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:15:02,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:15:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2021-11-25 18:15:04,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:15:04,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:15:04,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195103619] [2021-11-25 18:15:04,039 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:15:04,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115382860] [2021-11-25 18:15:04,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115382860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:15:04,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:15:04,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:15:04,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34401617] [2021-11-25 18:15:04,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:15:04,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:15:04,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:15:04,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:15:04,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:15:04,043 INFO L87 Difference]: Start difference. First operand 16784 states and 24945 transitions. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2021-11-25 18:15:07,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:14,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:17,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:19,750 WARN L534 Checker$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 18:15:21,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:23,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:26,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:35,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:37,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:39,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:41,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:44,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:15:46,390 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 18:15:46,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:15:46,686 INFO L93 Difference]: Finished difference Result 29708 states and 44292 transitions. [2021-11-25 18:15:46,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:15:46,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 695 [2021-11-25 18:15:46,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:15:46,758 INFO L225 Difference]: With dead ends: 29708 [2021-11-25 18:15:46,758 INFO L226 Difference]: Without dead ends: 17586 [2021-11-25 18:15:46,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:15:46,801 INFO L933 BasicCegarLoop]: 9428 mSDtfsCounter, 333 mSDsluCounter, 20056 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 109 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 27844 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:15:46,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 27844 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2531 Invalid, 10 Unknown, 0 Unchecked, 41.8s Time] [2021-11-25 18:15:46,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17586 states. [2021-11-25 18:15:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17586 to 16788. [2021-11-25 18:15:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16788 states, 10636 states have (on average 1.3217374952989847) internal successors, (14058), 10877 states have internal predecessors, (14058), 5433 states have call successors, (5433), 716 states have call predecessors, (5433), 718 states have return successors, (5458), 5414 states have call predecessors, (5458), 5430 states have call successors, (5458) [2021-11-25 18:15:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16788 states to 16788 states and 24949 transitions. [2021-11-25 18:15:47,848 INFO L78 Accepts]: Start accepts. Automaton has 16788 states and 24949 transitions. Word has length 695 [2021-11-25 18:15:47,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:15:47,849 INFO L470 AbstractCegarLoop]: Abstraction has 16788 states and 24949 transitions. [2021-11-25 18:15:47,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2021-11-25 18:15:47,850 INFO L276 IsEmpty]: Start isEmpty. Operand 16788 states and 24949 transitions. [2021-11-25 18:15:47,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2021-11-25 18:15:47,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:15:47,934 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 8, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:48,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:15:48,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 18:15:48,147 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:15:48,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:15:48,148 INFO L85 PathProgramCache]: Analyzing trace with hash 161943251, now seen corresponding path program 1 times [2021-11-25 18:15:48,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:15:48,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969690466] [2021-11-25 18:15:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:15:48,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:15:49,053 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:15:49,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783802708] [2021-11-25 18:15:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:15:49,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:15:49,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:15:49,059 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:15:49,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:15:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:15:56,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 23009 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:15:56,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:15:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2021-11-25 18:15:57,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:15:57,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:15:57,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969690466] [2021-11-25 18:15:57,675 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:15:57,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783802708] [2021-11-25 18:15:57,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783802708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:15:57,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:15:57,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:15:57,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802944062] [2021-11-25 18:15:57,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:15:57,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:15:57,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:15:57,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:15:57,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:15:57,678 INFO L87 Difference]: Start difference. First operand 16788 states and 24949 transitions. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 2 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-25 18:16:01,288 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 18:16:06,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:11,043 WARN L534 Checker$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 18:16:13,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:15,318 WARN L534 Checker$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 18:16:18,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:26,510 WARN L534 Checker$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 18:16:28,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:31,320 WARN L534 Checker$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 18:16:33,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:16:35,711 WARN L534 Checker$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 18:16:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:16:36,043 INFO L93 Difference]: Finished difference Result 29256 states and 43579 transitions. [2021-11-25 18:16:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:16:36,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 2 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 714 [2021-11-25 18:16:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:16:36,117 INFO L225 Difference]: With dead ends: 29256 [2021-11-25 18:16:36,117 INFO L226 Difference]: Without dead ends: 17130 [2021-11-25 18:16:36,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:16:36,161 INFO L933 BasicCegarLoop]: 9236 mSDtfsCounter, 329 mSDsluCounter, 19681 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 123 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 27316 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:16:36,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 27316 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2436 Invalid, 10 Unknown, 0 Unchecked, 37.6s Time] [2021-11-25 18:16:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17130 states. [2021-11-25 18:16:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17130 to 16792. [2021-11-25 18:16:37,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16792 states, 10640 states have (on average 1.3216165413533834) internal successors, (14062), 10881 states have internal predecessors, (14062), 5433 states have call successors, (5433), 716 states have call predecessors, (5433), 718 states have return successors, (5458), 5414 states have call predecessors, (5458), 5430 states have call successors, (5458) [2021-11-25 18:16:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16792 states to 16792 states and 24953 transitions. [2021-11-25 18:16:37,217 INFO L78 Accepts]: Start accepts. Automaton has 16792 states and 24953 transitions. Word has length 714 [2021-11-25 18:16:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:16:37,217 INFO L470 AbstractCegarLoop]: Abstraction has 16792 states and 24953 transitions. [2021-11-25 18:16:37,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 2 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-25 18:16:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 16792 states and 24953 transitions. [2021-11-25 18:16:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2021-11-25 18:16:37,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:37,276 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 8, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:37,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-25 18:16:37,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:16:37,477 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:16:37,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1564872936, now seen corresponding path program 1 times [2021-11-25 18:16:37,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:37,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955734009] [2021-11-25 18:16:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:37,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:38,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:16:38,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861702833] [2021-11-25 18:16:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:38,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:16:38,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:16:38,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:16:38,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b0db24-5875-4d40-be15-6253e6ab99e4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:16:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:45,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 23075 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:16:45,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:16:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 327 proven. 5 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2021-11-25 18:16:46,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:16:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2021-11-25 18:16:48,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:48,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955734009] [2021-11-25 18:16:48,032 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:16:48,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861702833] [2021-11-25 18:16:48,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861702833] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:16:48,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [802704052] [2021-11-25 18:16:48,092 INFO L159 IcfgInterpreter]: Started Sifa with 494 locations of interest [2021-11-25 18:16:48,092 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:16:48,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:16:48,105 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:16:48,106 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs