./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs --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 d46a0c21917156d86326b49faaf0b679a3e4aece26c641cfed6d2cba03552492 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:01,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:01,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:01,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:01,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:01,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:01,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:01,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:01,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:01,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:01,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:01,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:01,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:01,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:01,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:01,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:01,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:01,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:01,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:01,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:01,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:01,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:01,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:01,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:01,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:01,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:01,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:01,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:01,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:01,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:01,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:01,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:01,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:01,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:01,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:01,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:01,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:01,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:01,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:01,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:01,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:01,582 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:14:01,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:01,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:01,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:01,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:01,627 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:01,628 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:01,628 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:01,628 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:14:01,628 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:01,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:01,629 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:14:01,630 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:14:01,630 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:01,630 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:14:01,630 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:14:01,630 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:14:01,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:01,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:14:01,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:01,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:01,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:01,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:01,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:01,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:01,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:01,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:01,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:01,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:01,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:01,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:01,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:01,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:01,636 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:14:01,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:14:01,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:01,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:01,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:01,637 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_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d46a0c21917156d86326b49faaf0b679a3e4aece26c641cfed6d2cba03552492 [2021-11-19 14:14:01,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:01,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:01,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:01,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:02,000 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:02,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-19 14:14:02,079 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/data/b4ef1cac4/541b4e0a83ac44099d3d86be0a2439d8/FLAGd3f6d63cc [2021-11-19 14:14:03,131 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:03,133 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-19 14:14:03,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/data/b4ef1cac4/541b4e0a83ac44099d3d86be0a2439d8/FLAGd3f6d63cc [2021-11-19 14:14:03,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/data/b4ef1cac4/541b4e0a83ac44099d3d86be0a2439d8 [2021-11-19 14:14:03,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:03,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:03,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:03,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:03,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:03,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:03" (1/1) ... [2021-11-19 14:14:03,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c736a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:03, skipping insertion in model container [2021-11-19 14:14:03,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:03" (1/1) ... [2021-11-19 14:14:03,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:03,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:06,010 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,018 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,045 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,057 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,129 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,130 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,133 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,134 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,171 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,244 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,262 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,265 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,267 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,298 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,337 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,387 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,389 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,408 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,409 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,411 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,427 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,443 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,447 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,452 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,456 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,530 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,531 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,542 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,551 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,555 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,556 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,557 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,558 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,577 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,579 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,581 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:06,582 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:07,973 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450587,450600] [2021-11-19 14:14:07,976 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450756,450769] [2021-11-19 14:14:07,978 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450923,450936] [2021-11-19 14:14:07,979 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[451091,451104] [2021-11-19 14:14:08,059 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:08,135 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:14:08,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52c664fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08, skipping insertion in model container [2021-11-19 14:14:08,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:08,136 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:14:08,139 INFO L158 Benchmark]: Toolchain (without parser) took 4543.67ms. Allocated memory was 115.3MB in the beginning and 169.9MB in the end (delta: 54.5MB). Free memory was 79.1MB in the beginning and 99.0MB in the end (delta: -20.0MB). Peak memory consumption was 72.3MB. Max. memory is 16.1GB. [2021-11-19 14:14:08,140 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:14:08,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4539.54ms. Allocated memory was 115.3MB in the beginning and 169.9MB in the end (delta: 54.5MB). Free memory was 79.1MB in the beginning and 99.0MB in the end (delta: -20.0MB). Peak memory consumption was 72.3MB. Max. memory is 16.1GB. [2021-11-19 14:14:08,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4539.54ms. Allocated memory was 115.3MB in the beginning and 169.9MB in the end (delta: 54.5MB). Free memory was 79.1MB in the beginning and 99.0MB in the end (delta: -20.0MB). Peak memory consumption was 72.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6129]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs --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 d46a0c21917156d86326b49faaf0b679a3e4aece26c641cfed6d2cba03552492 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:10,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:10,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:10,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:10,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:10,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:10,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:10,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:10,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:10,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:10,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:10,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:10,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:10,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:10,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:10,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:10,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:10,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:10,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:10,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:10,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:10,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:10,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:10,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:10,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:10,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:10,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:10,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:10,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:10,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:10,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:10,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:10,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:10,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:10,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:10,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:10,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:10,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:10,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:10,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:10,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:10,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:14:10,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:10,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:10,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:10,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:10,672 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:10,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:10,673 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:10,673 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:10,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:10,673 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:10,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:10,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:10,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:10,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:10,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:10,676 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:10,676 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:14:10,676 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:14:10,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:10,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:10,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:10,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:10,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:14:10,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:10,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:10,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:10,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:10,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:10,679 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:14:10,679 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:14:10,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:10,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:10,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:10,680 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d46a0c21917156d86326b49faaf0b679a3e4aece26c641cfed6d2cba03552492 [2021-11-19 14:14:11,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:11,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:11,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:11,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:11,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:11,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-19 14:14:11,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/data/1c34c9867/fa5ff3a062544d15bbae05d14f856919/FLAG6a7c93dfe [2021-11-19 14:14:12,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:12,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-19 14:14:12,401 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/data/1c34c9867/fa5ff3a062544d15bbae05d14f856919/FLAG6a7c93dfe [2021-11-19 14:14:12,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/data/1c34c9867/fa5ff3a062544d15bbae05d14f856919 [2021-11-19 14:14:12,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:12,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:12,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:12,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:12,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:12,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:12" (1/1) ... [2021-11-19 14:14:12,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314a1f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:12, skipping insertion in model container [2021-11-19 14:14:12,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:12" (1/1) ... [2021-11-19 14:14:12,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:12,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:17,009 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450587,450600] [2021-11-19 14:14:17,017 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450756,450769] [2021-11-19 14:14:17,018 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450923,450936] [2021-11-19 14:14:17,018 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[451091,451104] [2021-11-19 14:14:17,063 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:17,146 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:14:17,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:17,686 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450587,450600] [2021-11-19 14:14:17,686 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450756,450769] [2021-11-19 14:14:17,687 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450923,450936] [2021-11-19 14:14:17,687 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[451091,451104] [2021-11-19 14:14:17,695 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:17,762 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:14:18,382 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450587,450600] [2021-11-19 14:14:18,382 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450756,450769] [2021-11-19 14:14:18,383 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[450923,450936] [2021-11-19 14:14:18,384 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_044e2526-b346-4659-9e55-3382eba0a0e1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[451091,451104] [2021-11-19 14:14:18,471 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:18,766 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:14:18,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18 WrapperNode [2021-11-19 14:14:18,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:18,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:18,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:14:18,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:14:18,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2021-11-19 14:14:18,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2021-11-19 14:14:19,290 INFO L137 Inliner]: procedures = 561, calls = 4326, calls flagged for inlining = 248, calls inlined = 226, statements flattened = 8356 [2021-11-19 14:14:19,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:19,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:14:19,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:14:19,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:14:19,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2021-11-19 14:14:19,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2021-11-19 14:14:19,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2021-11-19 14:14:19,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2021-11-19 14:14:19,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2021-11-19 14:14:19,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2021-11-19 14:14:19,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2021-11-19 14:14:19,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:14:19,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:14:19,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:14:19,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:14:19,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2021-11-19 14:14:19,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:19,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:19,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:14:19,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:14:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 14:14:19,852 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 14:14:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:14:19,852 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:14:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-19 14:14:19,852 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-19 14:14:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-19 14:14:19,853 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-19 14:14:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2021-11-19 14:14:19,853 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2021-11-19 14:14:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:14:19,853 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:14:19,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2021-11-19 14:14:19,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2021-11-19 14:14:19,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:14:19,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:14:19,854 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 14:14:19,854 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 14:14:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2021-11-19 14:14:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2021-11-19 14:14:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_82 [2021-11-19 14:14:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_82 [2021-11-19 14:14:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2021-11-19 14:14:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2021-11-19 14:14:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:14:19,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:14:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-19 14:14:19,857 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-19 14:14:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2021-11-19 14:14:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2021-11-19 14:14:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 14:14:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 14:14:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-19 14:14:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-19 14:14:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-19 14:14:19,859 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-19 14:14:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2021-11-19 14:14:19,859 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2021-11-19 14:14:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-19 14:14:19,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-19 14:14:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_65 [2021-11-19 14:14:19,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_65 [2021-11-19 14:14:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-19 14:14:19,862 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-19 14:14:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_5 [2021-11-19 14:14:19,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_5 [2021-11-19 14:14:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 14:14:19,862 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 14:14:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-19 14:14:19,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-19 14:14:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 14:14:19,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 14:14:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-19 14:14:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-19 14:14:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2021-11-19 14:14:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2021-11-19 14:14:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 14:14:19,865 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 14:14:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:14:19,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:14:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 14:14:19,866 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 14:14:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-19 14:14:19,866 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-19 14:14:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-19 14:14:19,867 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-19 14:14:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-19 14:14:19,867 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-19 14:14:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 14:14:19,867 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 14:14:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:14:19,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:14:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-19 14:14:19,868 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-19 14:14:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 14:14:19,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 14:14:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_5_2 [2021-11-19 14:14:19,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_5_2 [2021-11-19 14:14:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 14:14:19,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 14:14:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:14:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:14:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:14:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:14:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2021-11-19 14:14:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2021-11-19 14:14:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-19 14:14:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-19 14:14:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:14:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:14:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-19 14:14:19,873 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-19 14:14:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2021-11-19 14:14:19,873 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2021-11-19 14:14:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-19 14:14:19,873 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-19 14:14:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2021-11-19 14:14:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2021-11-19 14:14:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 14:14:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 14:14:19,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-19 14:14:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-19 14:14:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-19 14:14:19,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-19 14:14:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:14:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:14:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2021-11-19 14:14:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2021-11-19 14:14:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-19 14:14:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-19 14:14:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 14:14:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 14:14:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:14:19,890 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:14:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 14:14:19,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 14:14:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 14:14:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 14:14:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:14:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:14:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2021-11-19 14:14:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2021-11-19 14:14:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_83 [2021-11-19 14:14:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_83 [2021-11-19 14:14:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-19 14:14:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-19 14:14:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-19 14:14:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-19 14:14:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 14:14:19,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 14:14:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2021-11-19 14:14:19,893 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2021-11-19 14:14:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 14:14:19,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 14:14:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2021-11-19 14:14:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2021-11-19 14:14:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:14:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:14:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:14:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2021-11-19 14:14:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2021-11-19 14:14:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-19 14:14:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-19 14:14:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:14:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:14:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:14:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:14:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:14:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:14:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:14:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:14:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-19 14:14:19,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-19 14:14:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:14:19,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:14:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:14:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-19 14:14:19,897 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-19 14:14:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_98 [2021-11-19 14:14:19,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_98 [2021-11-19 14:14:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-19 14:14:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-19 14:14:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2021-11-19 14:14:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2021-11-19 14:14:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-19 14:14:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-19 14:14:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2021-11-19 14:14:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2021-11-19 14:14:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-19 14:14:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-19 14:14:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2021-11-19 14:14:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2021-11-19 14:14:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 14:14:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 14:14:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2021-11-19 14:14:19,900 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2021-11-19 14:14:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:14:19,900 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:14:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 14:14:19,900 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 14:14:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2021-11-19 14:14:19,901 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2021-11-19 14:14:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 14:14:19,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 14:14:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-19 14:14:19,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-19 14:14:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2021-11-19 14:14:19,902 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2021-11-19 14:14:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-19 14:14:19,902 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-19 14:14:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2021-11-19 14:14:19,902 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2021-11-19 14:14:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:14:19,903 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-19 14:14:19,903 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-19 14:14:19,903 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2021-11-19 14:14:19,903 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2021-11-19 14:14:19,903 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2021-11-19 14:14:19,903 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2021-11-19 14:14:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-19 14:14:19,904 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-19 14:14:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:14:19,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:14:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:14:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:14:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2021-11-19 14:14:19,905 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2021-11-19 14:14:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:14:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:14:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:14:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:14:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:14:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:14:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:14:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:14:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 14:14:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 14:14:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2021-11-19 14:14:19,907 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2021-11-19 14:14:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 14:14:19,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 14:14:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:14:19,907 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:14:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-19 14:14:19,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-19 14:14:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 14:14:19,908 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 14:14:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-19 14:14:19,908 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-19 14:14:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:14:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-19 14:14:19,913 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-19 14:14:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:14:19,913 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:14:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:14:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2021-11-19 14:14:19,914 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2021-11-19 14:14:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2021-11-19 14:14:19,914 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2021-11-19 14:14:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_81 [2021-11-19 14:14:19,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_81 [2021-11-19 14:14:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:14:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:14:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:14:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:14:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:14:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure rx_oom_timer [2021-11-19 14:14:19,917 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_oom_timer [2021-11-19 14:14:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-19 14:14:19,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-19 14:14:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 14:14:19,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 14:14:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:14:19,918 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:14:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:14:19,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:14:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-19 14:14:19,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-19 14:14:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_108 [2021-11-19 14:14:19,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_108 [2021-11-19 14:14:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-19 14:14:19,920 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-19 14:14:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-19 14:14:19,920 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-19 14:14:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_89 [2021-11-19 14:14:19,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_89 [2021-11-19 14:14:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_88 [2021-11-19 14:14:19,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_88 [2021-11-19 14:14:19,921 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2021-11-19 14:14:19,921 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2021-11-19 14:14:19,921 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-19 14:14:19,921 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-19 14:14:19,921 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 14:14:19,921 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 14:14:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2021-11-19 14:14:19,922 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2021-11-19 14:14:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:14:19,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:14:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:14:19,922 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:14:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-19 14:14:19,923 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-19 14:14:19,923 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:14:19,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:14:19,923 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:14:19,923 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:14:19,923 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2021-11-19 14:14:19,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2021-11-19 14:14:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_timer [2021-11-19 14:14:19,924 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_timer [2021-11-19 14:14:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:14:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:14:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:14:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2021-11-19 14:14:19,925 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2021-11-19 14:14:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:14:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-19 14:14:19,925 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-19 14:14:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-19 14:14:19,925 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-19 14:14:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:14:19,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:14:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2021-11-19 14:14:19,926 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2021-11-19 14:14:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2021-11-19 14:14:19,926 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2021-11-19 14:14:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_10_2 [2021-11-19 14:14:19,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_10_2 [2021-11-19 14:14:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_109 [2021-11-19 14:14:19,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_109 [2021-11-19 14:14:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_94 [2021-11-19 14:14:19,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_94 [2021-11-19 14:14:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2021-11-19 14:14:19,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2021-11-19 14:14:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_90 [2021-11-19 14:14:19,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_90 [2021-11-19 14:14:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-19 14:14:19,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-19 14:14:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2021-11-19 14:14:19,928 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2021-11-19 14:14:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2021-11-19 14:14:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2021-11-19 14:14:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:14:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:14:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-19 14:14:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-19 14:14:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-19 14:14:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-19 14:14:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-19 14:14:19,930 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-19 14:14:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-19 14:14:19,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-19 14:14:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-19 14:14:19,930 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-19 14:14:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-19 14:14:19,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-19 14:14:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:14:19,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:14:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-19 14:14:19,931 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-19 14:14:21,103 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:14:21,107 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:14:34,275 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:15:31,162 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:15:31,188 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:15:31,188 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:15:31,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:31 BoogieIcfgContainer [2021-11-19 14:15:31,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:15:31,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:15:31,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:15:31,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:15:31,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:14:12" (1/3) ... [2021-11-19 14:15:31,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382b8ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:15:31, skipping insertion in model container [2021-11-19 14:15:31,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (2/3) ... [2021-11-19 14:15:31,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382b8ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:15:31, skipping insertion in model container [2021-11-19 14:15:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:31" (3/3) ... [2021-11-19 14:15:31,204 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-19 14:15:31,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:15:31,210 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:15:31,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:15:31,282 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 [2021-11-19 14:15:31,282 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:15:31,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 2828 states, 1912 states have (on average 1.3284518828451883) internal successors, (2540), 2000 states have internal predecessors, (2540), 758 states have call successors, (758), 155 states have call predecessors, (758), 154 states have return successors, (751), 733 states have call predecessors, (751), 751 states have call successors, (751) [2021-11-19 14:15:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 14:15:31,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:31,366 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:31,367 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:15:31,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash -787568844, now seen corresponding path program 1 times [2021-11-19 14:15:31,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:31,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858675257] [2021-11-19 14:15:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:31,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:31,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:31,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:31,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:15:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:36,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 4205 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:15:36,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:37,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:15:37,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:37,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858675257] [2021-11-19 14:15:37,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858675257] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:15:37,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:15:37,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-11-19 14:15:37,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617320751] [2021-11-19 14:15:37,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:37,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:15:37,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:37,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:15:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:15:37,541 INFO L87 Difference]: Start difference. First operand has 2828 states, 1912 states have (on average 1.3284518828451883) internal successors, (2540), 2000 states have internal predecessors, (2540), 758 states have call successors, (758), 155 states have call predecessors, (758), 154 states have return successors, (751), 733 states have call predecessors, (751), 751 states have call successors, (751) Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 14:15:39,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:39,766 INFO L93 Difference]: Finished difference Result 6057 states and 9002 transitions. [2021-11-19 14:15:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:15:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2021-11-19 14:15:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:39,811 INFO L225 Difference]: With dead ends: 6057 [2021-11-19 14:15:39,812 INFO L226 Difference]: Without dead ends: 3232 [2021-11-19 14:15:39,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:15:39,844 INFO L933 BasicCegarLoop]: 4104 mSDtfsCounter, 985 mSDsluCounter, 24558 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 28662 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:39,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 28662 Invalid, 585 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [233 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:15:39,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3232 states. [2021-11-19 14:15:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3232 to 2822. [2021-11-19 14:15:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2822 states, 1913 states have (on average 1.319916361735494) internal successors, (2525), 1997 states have internal predecessors, (2525), 753 states have call successors, (753), 154 states have call predecessors, (753), 153 states have return successors, (750), 732 states have call predecessors, (750), 750 states have call successors, (750) [2021-11-19 14:15:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 4028 transitions. [2021-11-19 14:15:40,140 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 4028 transitions. Word has length 55 [2021-11-19 14:15:40,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:40,141 INFO L470 AbstractCegarLoop]: Abstraction has 2822 states and 4028 transitions. [2021-11-19 14:15:40,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 14:15:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 4028 transitions. [2021-11-19 14:15:40,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 14:15:40,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:40,152 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:40,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:40,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:40,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:15:40,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1263415154, now seen corresponding path program 1 times [2021-11-19 14:15:40,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:40,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548720612] [2021-11-19 14:15:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:40,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:40,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:40,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:40,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:15:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:45,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 4204 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:15:45,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:46,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:15:46,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:46,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548720612] [2021-11-19 14:15:46,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548720612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:46,470 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:46,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:15:46,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472595920] [2021-11-19 14:15:46,470 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:46,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:15:46,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:46,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:15:46,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:15:46,473 INFO L87 Difference]: Start difference. First operand 2822 states and 4028 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:16:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:08,517 INFO L93 Difference]: Finished difference Result 8128 states and 11557 transitions. [2021-11-19 14:16:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:16:08,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 55 [2021-11-19 14:16:08,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:08,576 INFO L225 Difference]: With dead ends: 8128 [2021-11-19 14:16:08,576 INFO L226 Difference]: Without dead ends: 6026 [2021-11-19 14:16:08,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:16:08,596 INFO L933 BasicCegarLoop]: 5806 mSDtfsCounter, 4820 mSDsluCounter, 36702 mSDsCounter, 0 mSdLazyCounter, 3325 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4874 SdHoareTripleChecker+Valid, 42508 SdHoareTripleChecker+Invalid, 3706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 3325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:08,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4874 Valid, 42508 Invalid, 3706 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [381 Valid, 3325 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2021-11-19 14:16:08,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6026 states. [2021-11-19 14:16:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6026 to 5588. [2021-11-19 14:16:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5588 states, 3801 states have (on average 1.3209681662720336) internal successors, (5021), 3966 states have internal predecessors, (5021), 1479 states have call successors, (1479), 306 states have call predecessors, (1479), 305 states have return successors, (1476), 1438 states have call predecessors, (1476), 1476 states have call successors, (1476) [2021-11-19 14:16:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 7976 transitions. [2021-11-19 14:16:09,077 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 7976 transitions. Word has length 55 [2021-11-19 14:16:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:09,078 INFO L470 AbstractCegarLoop]: Abstraction has 5588 states and 7976 transitions. [2021-11-19 14:16:09,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:16:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 7976 transitions. [2021-11-19 14:16:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 14:16:09,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:09,081 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:09,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:09,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:09,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:16:09,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:09,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1191028596, now seen corresponding path program 1 times [2021-11-19 14:16:09,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:09,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291787141] [2021-11-19 14:16:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:09,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:09,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:09,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:09,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:16:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:14,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 4203 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:16:14,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:16:14,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:16:15,386 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:15,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291787141] [2021-11-19 14:16:15,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291787141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:15,386 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:16:15,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 14:16:15,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315676775] [2021-11-19 14:16:15,386 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:15,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:16:15,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:16:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:16:15,388 INFO L87 Difference]: Start difference. First operand 5588 states and 7976 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:16:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:15,876 INFO L93 Difference]: Finished difference Result 5594 states and 7981 transitions. [2021-11-19 14:16:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:15,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 55 [2021-11-19 14:16:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:15,933 INFO L225 Difference]: With dead ends: 5594 [2021-11-19 14:16:15,933 INFO L226 Difference]: Without dead ends: 5592 [2021-11-19 14:16:15,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:16:15,940 INFO L933 BasicCegarLoop]: 4012 mSDtfsCounter, 3968 mSDsluCounter, 16019 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3981 SdHoareTripleChecker+Valid, 20031 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:15,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3981 Valid, 20031 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:16:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2021-11-19 14:16:16,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 5592. [2021-11-19 14:16:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 3804 states have (on average 1.3207150368033649) internal successors, (5024), 3969 states have internal predecessors, (5024), 1479 states have call successors, (1479), 307 states have call predecessors, (1479), 306 states have return successors, (1476), 1438 states have call predecessors, (1476), 1476 states have call successors, (1476) [2021-11-19 14:16:16,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 7979 transitions. [2021-11-19 14:16:16,293 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 7979 transitions. Word has length 55 [2021-11-19 14:16:16,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:16,294 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 7979 transitions. [2021-11-19 14:16:16,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:16:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 7979 transitions. [2021-11-19 14:16:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 14:16:16,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:16,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-19 14:16:16,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:16,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:16,519 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:16:16,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1057096222, now seen corresponding path program 1 times [2021-11-19 14:16:16,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:16,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335533107] [2021-11-19 14:16:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:16,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:16,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:16,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:16,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:16:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:21,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 4210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:16:21,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:16:22,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:16:22,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:22,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335533107] [2021-11-19 14:16:22,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335533107] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:16:22,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:16:22,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:16:22,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255209461] [2021-11-19 14:16:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:22,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:16:22,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:16:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:16:22,496 INFO L87 Difference]: Start difference. First operand 5592 states and 7979 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-19 14:16:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:22,902 INFO L93 Difference]: Finished difference Result 5598 states and 7984 transitions. [2021-11-19 14:16:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:22,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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 60 [2021-11-19 14:16:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:22,955 INFO L225 Difference]: With dead ends: 5598 [2021-11-19 14:16:22,956 INFO L226 Difference]: Without dead ends: 5596 [2021-11-19 14:16:22,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:16:22,962 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3978 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3990 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:22,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3990 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:16:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2021-11-19 14:16:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5596. [2021-11-19 14:16:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 3807 states have (on average 1.320462306277909) internal successors, (5027), 3972 states have internal predecessors, (5027), 1479 states have call successors, (1479), 308 states have call predecessors, (1479), 307 states have return successors, (1476), 1438 states have call predecessors, (1476), 1476 states have call successors, (1476) [2021-11-19 14:16:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 7982 transitions. [2021-11-19 14:16:23,347 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 7982 transitions. Word has length 60 [2021-11-19 14:16:23,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:23,348 INFO L470 AbstractCegarLoop]: Abstraction has 5596 states and 7982 transitions. [2021-11-19 14:16:23,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-19 14:16:23,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 7982 transitions. [2021-11-19 14:16:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:16:23,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:23,351 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-19 14:16:23,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:23,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:23,575 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:16:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:23,575 INFO L85 PathProgramCache]: Analyzing trace with hash 60134388, now seen corresponding path program 1 times [2021-11-19 14:16:23,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:23,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81922909] [2021-11-19 14:16:23,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:23,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:23,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:23,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:23,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:16:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:28,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 4217 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:16:28,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:16:28,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:16:29,323 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:29,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81922909] [2021-11-19 14:16:29,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81922909] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:16:29,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:16:29,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:16:29,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881832465] [2021-11-19 14:16:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:29,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:16:29,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:16:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:16:29,326 INFO L87 Difference]: Start difference. First operand 5596 states and 7982 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 14:16:29,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:29,780 INFO L93 Difference]: Finished difference Result 5602 states and 7987 transitions. [2021-11-19 14:16:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:29,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2021-11-19 14:16:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:29,848 INFO L225 Difference]: With dead ends: 5602 [2021-11-19 14:16:29,848 INFO L226 Difference]: Without dead ends: 5600 [2021-11-19 14:16:29,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:16:29,853 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3978 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3989 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:29,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3989 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:16:29,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5600 states. [2021-11-19 14:16:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5600 to 5600. [2021-11-19 14:16:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 3810 states have (on average 1.3202099737532809) internal successors, (5030), 3975 states have internal predecessors, (5030), 1479 states have call successors, (1479), 309 states have call predecessors, (1479), 308 states have return successors, (1476), 1438 states have call predecessors, (1476), 1476 states have call successors, (1476) [2021-11-19 14:16:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 7985 transitions. [2021-11-19 14:16:30,212 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 7985 transitions. Word has length 65 [2021-11-19 14:16:30,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:30,212 INFO L470 AbstractCegarLoop]: Abstraction has 5600 states and 7985 transitions. [2021-11-19 14:16:30,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 14:16:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 7985 transitions. [2021-11-19 14:16:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 14:16:30,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:30,215 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:30,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 14:16:30,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:30,439 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:16:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash -585101086, now seen corresponding path program 1 times [2021-11-19 14:16:30,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:30,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442672625] [2021-11-19 14:16:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:30,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:30,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:30,444 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:30,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:16:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:35,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 4224 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:16:35,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:16:35,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:16:36,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:36,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442672625] [2021-11-19 14:16:36,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442672625] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:16:36,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:16:36,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:16:36,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85679457] [2021-11-19 14:16:36,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:36,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:16:36,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:16:36,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:16:36,073 INFO L87 Difference]: Start difference. First operand 5600 states and 7985 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-19 14:16:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:36,476 INFO L93 Difference]: Finished difference Result 5606 states and 7990 transitions. [2021-11-19 14:16:36,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:36,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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 70 [2021-11-19 14:16:36,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:36,502 INFO L225 Difference]: With dead ends: 5606 [2021-11-19 14:16:36,502 INFO L226 Difference]: Without dead ends: 5604 [2021-11-19 14:16:36,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:16:36,507 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3978 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3988 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:36,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3988 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:16:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2021-11-19 14:16:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5604. [2021-11-19 14:16:36,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5604 states, 3813 states have (on average 1.3199580382900604) internal successors, (5033), 3978 states have internal predecessors, (5033), 1479 states have call successors, (1479), 310 states have call predecessors, (1479), 309 states have return successors, (1476), 1438 states have call predecessors, (1476), 1476 states have call successors, (1476) [2021-11-19 14:16:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 7988 transitions. [2021-11-19 14:16:36,870 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 7988 transitions. Word has length 70 [2021-11-19 14:16:36,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:36,871 INFO L470 AbstractCegarLoop]: Abstraction has 5604 states and 7988 transitions. [2021-11-19 14:16:36,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-19 14:16:36,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 7988 transitions. [2021-11-19 14:16:36,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:16:36,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:36,875 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:36,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:37,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:37,091 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:16:37,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1727950732, now seen corresponding path program 1 times [2021-11-19 14:16:37,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:37,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878580970] [2021-11-19 14:16:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:37,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:37,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:37,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:37,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:16:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:42,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 4231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:16:42,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 14:16:42,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 14:16:42,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:42,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878580970] [2021-11-19 14:16:42,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878580970] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:16:42,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:16:42,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:16:42,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928533440] [2021-11-19 14:16:42,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:42,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:16:42,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:42,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:16:42,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:16:42,971 INFO L87 Difference]: Start difference. First operand 5604 states and 7988 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:16:43,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:43,341 INFO L93 Difference]: Finished difference Result 5610 states and 7993 transitions. [2021-11-19 14:16:43,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:43,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2021-11-19 14:16:43,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:43,368 INFO L225 Difference]: With dead ends: 5610 [2021-11-19 14:16:43,368 INFO L226 Difference]: Without dead ends: 5608 [2021-11-19 14:16:43,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:16:43,372 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3978 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3987 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:43,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3987 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:16:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5608 states. [2021-11-19 14:16:43,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5608 to 5608. [2021-11-19 14:16:43,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5608 states, 3816 states have (on average 1.319706498951782) internal successors, (5036), 3981 states have internal predecessors, (5036), 1479 states have call successors, (1479), 311 states have call predecessors, (1479), 310 states have return successors, (1476), 1438 states have call predecessors, (1476), 1476 states have call successors, (1476) [2021-11-19 14:16:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5608 states to 5608 states and 7991 transitions. [2021-11-19 14:16:43,833 INFO L78 Accepts]: Start accepts. Automaton has 5608 states and 7991 transitions. Word has length 75 [2021-11-19 14:16:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:43,834 INFO L470 AbstractCegarLoop]: Abstraction has 5608 states and 7991 transitions. [2021-11-19 14:16:43,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:16:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5608 states and 7991 transitions. [2021-11-19 14:16:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:16:43,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:43,836 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:43,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:44,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:44,037 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:16:44,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:44,038 INFO L85 PathProgramCache]: Analyzing trace with hash -296092718, now seen corresponding path program 1 times [2021-11-19 14:16:44,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:44,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780693573] [2021-11-19 14:16:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:44,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:44,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:44,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:44,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:16:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:48,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 4255 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:16:48,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-19 14:16:49,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:16:50,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:50,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780693573] [2021-11-19 14:16:50,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780693573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:50,754 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:16:50,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-11-19 14:16:50,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32132013] [2021-11-19 14:16:50,754 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:50,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 14:16:50,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:50,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 14:16:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:16:50,756 INFO L87 Difference]: Start difference. First operand 5608 states and 7991 transitions. Second operand has 23 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 8 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2021-11-19 14:16:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:54,079 INFO L93 Difference]: Finished difference Result 9804 states and 13864 transitions. [2021-11-19 14:16:54,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:16:54,080 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 8 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 91 [2021-11-19 14:16:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:54,109 INFO L225 Difference]: With dead ends: 9804 [2021-11-19 14:16:54,109 INFO L226 Difference]: Without dead ends: 5633 [2021-11-19 14:16:54,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2021-11-19 14:16:54,130 INFO L933 BasicCegarLoop]: 3983 mSDtfsCounter, 30 mSDsluCounter, 63593 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 67576 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:54,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 67576 Invalid, 848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:16:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5633 states. [2021-11-19 14:16:54,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5633 to 5626. [2021-11-19 14:16:54,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 3830 states have (on average 1.318537859007833) internal successors, (5050), 3995 states have internal predecessors, (5050), 1483 states have call successors, (1483), 311 states have call predecessors, (1483), 310 states have return successors, (1480), 1442 states have call predecessors, (1480), 1480 states have call successors, (1480) [2021-11-19 14:16:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 8013 transitions. [2021-11-19 14:16:54,501 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 8013 transitions. Word has length 91 [2021-11-19 14:16:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:54,502 INFO L470 AbstractCegarLoop]: Abstraction has 5626 states and 8013 transitions. [2021-11-19 14:16:54,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 8 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2021-11-19 14:16:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 8013 transitions. [2021-11-19 14:16:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 14:16:54,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:54,505 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:54,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:54,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:54,727 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:16:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2024799776, now seen corresponding path program 1 times [2021-11-19 14:16:54,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:54,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663854578] [2021-11-19 14:16:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:54,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:54,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:54,735 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:54,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:16:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:59,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 4238 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:16:59,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-19 14:16:59,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:17:00,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:00,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663854578] [2021-11-19 14:17:00,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663854578] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:00,282 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:00,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 14:17:00,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770942569] [2021-11-19 14:17:00,283 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:00,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:17:00,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:00,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:17:00,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:17:00,285 INFO L87 Difference]: Start difference. First operand 5626 states and 8013 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:17:00,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:00,908 INFO L93 Difference]: Finished difference Result 13698 states and 19273 transitions. [2021-11-19 14:17:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:17:00,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 80 [2021-11-19 14:17:00,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:00,966 INFO L225 Difference]: With dead ends: 13698 [2021-11-19 14:17:00,966 INFO L226 Difference]: Without dead ends: 9506 [2021-11-19 14:17:00,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:17:00,998 INFO L933 BasicCegarLoop]: 5234 mSDtfsCounter, 3771 mSDsluCounter, 5869 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3771 SdHoareTripleChecker+Valid, 11103 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:00,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3771 Valid, 11103 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:17:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9506 states. [2021-11-19 14:17:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9506 to 7325. [2021-11-19 14:17:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7325 states, 4916 states have (on average 1.3157038242473555) internal successors, (6468), 5137 states have internal predecessors, (6468), 1953 states have call successors, (1953), 454 states have call predecessors, (1953), 453 states have return successors, (1950), 1898 states have call predecessors, (1950), 1950 states have call successors, (1950) [2021-11-19 14:17:01,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7325 states to 7325 states and 10371 transitions. [2021-11-19 14:17:01,644 INFO L78 Accepts]: Start accepts. Automaton has 7325 states and 10371 transitions. Word has length 80 [2021-11-19 14:17:01,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:01,645 INFO L470 AbstractCegarLoop]: Abstraction has 7325 states and 10371 transitions. [2021-11-19 14:17:01,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:17:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 7325 states and 10371 transitions. [2021-11-19 14:17:01,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 14:17:01,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:01,647 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:01,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:01,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:01,863 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:01,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash -763882526, now seen corresponding path program 1 times [2021-11-19 14:17:01,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:01,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818204210] [2021-11-19 14:17:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:01,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:01,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:01,870 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:01,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:17:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:06,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 4238 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:17:06,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:17:07,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:17:07,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:07,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818204210] [2021-11-19 14:17:07,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818204210] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:17:07,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:17:07,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:17:07,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904535972] [2021-11-19 14:17:07,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:07,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:17:07,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:07,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:17:07,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:17:07,773 INFO L87 Difference]: Start difference. First operand 7325 states and 10371 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:17:08,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:08,255 INFO L93 Difference]: Finished difference Result 7331 states and 10376 transitions. [2021-11-19 14:17:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:17:08,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 80 [2021-11-19 14:17:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:08,296 INFO L225 Difference]: With dead ends: 7331 [2021-11-19 14:17:08,296 INFO L226 Difference]: Without dead ends: 7329 [2021-11-19 14:17:08,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:17:08,302 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3978 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3986 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:08,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3986 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:17:08,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7329 states. [2021-11-19 14:17:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7329 to 7329. [2021-11-19 14:17:08,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 4919 states have (on average 1.3155112827810531) internal successors, (6471), 5140 states have internal predecessors, (6471), 1953 states have call successors, (1953), 455 states have call predecessors, (1953), 454 states have return successors, (1950), 1898 states have call predecessors, (1950), 1950 states have call successors, (1950) [2021-11-19 14:17:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 10374 transitions. [2021-11-19 14:17:08,942 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 10374 transitions. Word has length 80 [2021-11-19 14:17:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:08,943 INFO L470 AbstractCegarLoop]: Abstraction has 7329 states and 10374 transitions. [2021-11-19 14:17:08,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:17:08,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 10374 transitions. [2021-11-19 14:17:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 14:17:08,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:08,946 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:09,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:09,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:09,171 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:09,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:09,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1500355828, now seen corresponding path program 1 times [2021-11-19 14:17:09,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:09,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631722473] [2021-11-19 14:17:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:09,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:09,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:09,178 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:09,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:17:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:14,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 4245 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:17:14,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:14,673 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-19 14:17:14,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-19 14:17:15,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:15,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631722473] [2021-11-19 14:17:15,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631722473] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:17:15,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:17:15,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:17:15,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367594231] [2021-11-19 14:17:15,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:15,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:17:15,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:15,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:17:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:17:15,038 INFO L87 Difference]: Start difference. First operand 7329 states and 10374 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:17:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:15,642 INFO L93 Difference]: Finished difference Result 10830 states and 15262 transitions. [2021-11-19 14:17:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:17:15,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 85 [2021-11-19 14:17:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:15,688 INFO L225 Difference]: With dead ends: 10830 [2021-11-19 14:17:15,688 INFO L226 Difference]: Without dead ends: 10828 [2021-11-19 14:17:15,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:17:15,695 INFO L933 BasicCegarLoop]: 5003 mSDtfsCounter, 3612 mSDsluCounter, 11977 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3619 SdHoareTripleChecker+Valid, 16980 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:15,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3619 Valid, 16980 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:17:15,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10828 states. [2021-11-19 14:17:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10828 to 10818. [2021-11-19 14:17:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10818 states, 7190 states have (on average 1.310152990264256) internal successors, (9420), 7510 states have internal predecessors, (9420), 2898 states have call successors, (2898), 746 states have call predecessors, (2898), 727 states have return successors, (2934), 2807 states have call predecessors, (2934), 2895 states have call successors, (2934) [2021-11-19 14:17:16,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10818 states to 10818 states and 15252 transitions. [2021-11-19 14:17:16,578 INFO L78 Accepts]: Start accepts. Automaton has 10818 states and 15252 transitions. Word has length 85 [2021-11-19 14:17:16,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:16,578 INFO L470 AbstractCegarLoop]: Abstraction has 10818 states and 15252 transitions. [2021-11-19 14:17:16,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:17:16,579 INFO L276 IsEmpty]: Start isEmpty. Operand 10818 states and 15252 transitions. [2021-11-19 14:17:16,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-19 14:17:16,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:16,581 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:16,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:16,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:16,795 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:16,795 INFO L85 PathProgramCache]: Analyzing trace with hash -900069662, now seen corresponding path program 1 times [2021-11-19 14:17:16,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:16,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766815808] [2021-11-19 14:17:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:16,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:16,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:16,802 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:16,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:17:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:21,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 4252 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:17:21,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:22,254 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-19 14:17:22,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-19 14:17:22,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:22,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766815808] [2021-11-19 14:17:22,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766815808] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:17:22,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:17:22,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:17:22,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394230773] [2021-11-19 14:17:22,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:22,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:17:22,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:17:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:17:22,719 INFO L87 Difference]: Start difference. First operand 10818 states and 15252 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:17:23,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:23,350 INFO L93 Difference]: Finished difference Result 10824 states and 15257 transitions. [2021-11-19 14:17:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:17:23,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2021-11-19 14:17:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:23,385 INFO L225 Difference]: With dead ends: 10824 [2021-11-19 14:17:23,385 INFO L226 Difference]: Without dead ends: 10822 [2021-11-19 14:17:23,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:17:23,390 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3978 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3984 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:23,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3984 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:17:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10822 states. [2021-11-19 14:17:24,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10822 to 10822. [2021-11-19 14:17:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10822 states, 7193 states have (on average 1.3100236340886973) internal successors, (9423), 7513 states have internal predecessors, (9423), 2898 states have call successors, (2898), 747 states have call predecessors, (2898), 728 states have return successors, (2934), 2807 states have call predecessors, (2934), 2895 states have call successors, (2934) [2021-11-19 14:17:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10822 states to 10822 states and 15255 transitions. [2021-11-19 14:17:24,331 INFO L78 Accepts]: Start accepts. Automaton has 10822 states and 15255 transitions. Word has length 90 [2021-11-19 14:17:24,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:24,331 INFO L470 AbstractCegarLoop]: Abstraction has 10822 states and 15255 transitions. [2021-11-19 14:17:24,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:17:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand 10822 states and 15255 transitions. [2021-11-19 14:17:24,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:17:24,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:24,334 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:24,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:24,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:24,559 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:24,559 INFO L85 PathProgramCache]: Analyzing trace with hash -804931212, now seen corresponding path program 1 times [2021-11-19 14:17:24,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:24,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643532006] [2021-11-19 14:17:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:24,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:24,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:24,563 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:24,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:17:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:29,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 4259 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:17:29,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-19 14:17:29,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-19 14:17:30,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:30,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643532006] [2021-11-19 14:17:30,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643532006] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:17:30,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:17:30,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:17:30,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023455506] [2021-11-19 14:17:30,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:30,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:17:30,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:17:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:17:30,068 INFO L87 Difference]: Start difference. First operand 10822 states and 15255 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:17:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:30,760 INFO L93 Difference]: Finished difference Result 11364 states and 15862 transitions. [2021-11-19 14:17:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:17:30,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2021-11-19 14:17:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:30,807 INFO L225 Difference]: With dead ends: 11364 [2021-11-19 14:17:30,807 INFO L226 Difference]: Without dead ends: 11362 [2021-11-19 14:17:30,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:17:30,814 INFO L933 BasicCegarLoop]: 4042 mSDtfsCounter, 3897 mSDsluCounter, 8256 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3902 SdHoareTripleChecker+Valid, 12298 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:30,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3902 Valid, 12298 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:17:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11362 states. [2021-11-19 14:17:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11362 to 11358. [2021-11-19 14:17:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11358 states, 7492 states have (on average 1.300320341697811) internal successors, (9742), 7814 states have internal predecessors, (9742), 3040 states have call successors, (3040), 842 states have call predecessors, (3040), 823 states have return successors, (3076), 2949 states have call predecessors, (3076), 3037 states have call successors, (3076) [2021-11-19 14:17:31,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11358 states to 11358 states and 15858 transitions. [2021-11-19 14:17:31,776 INFO L78 Accepts]: Start accepts. Automaton has 11358 states and 15858 transitions. Word has length 95 [2021-11-19 14:17:31,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:31,777 INFO L470 AbstractCegarLoop]: Abstraction has 11358 states and 15858 transitions. [2021-11-19 14:17:31,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:17:31,777 INFO L276 IsEmpty]: Start isEmpty. Operand 11358 states and 15858 transitions. [2021-11-19 14:17:31,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:17:31,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:31,779 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:31,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:32,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:32,003 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1427761634, now seen corresponding path program 1 times [2021-11-19 14:17:32,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:32,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220387978] [2021-11-19 14:17:32,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:32,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:32,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:32,009 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:32,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:17:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:36,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 4266 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:17:36,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-19 14:17:37,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-19 14:17:37,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:37,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220387978] [2021-11-19 14:17:37,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220387978] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:17:37,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:17:37,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:17:37,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703937512] [2021-11-19 14:17:37,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:37,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:17:37,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:37,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:17:37,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:17:37,653 INFO L87 Difference]: Start difference. First operand 11358 states and 15858 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:17:38,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:38,470 INFO L93 Difference]: Finished difference Result 11364 states and 15863 transitions. [2021-11-19 14:17:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:17:38,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 100 [2021-11-19 14:17:38,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:38,519 INFO L225 Difference]: With dead ends: 11364 [2021-11-19 14:17:38,520 INFO L226 Difference]: Without dead ends: 11362 [2021-11-19 14:17:38,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:17:38,526 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3978 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3982 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:38,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3982 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:17:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11362 states. [2021-11-19 14:17:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11362 to 11362. [2021-11-19 14:17:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11362 states, 7495 states have (on average 1.3002001334222815) internal successors, (9745), 7817 states have internal predecessors, (9745), 3040 states have call successors, (3040), 843 states have call predecessors, (3040), 824 states have return successors, (3076), 2949 states have call predecessors, (3076), 3037 states have call successors, (3076) [2021-11-19 14:17:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11362 states to 11362 states and 15861 transitions. [2021-11-19 14:17:39,439 INFO L78 Accepts]: Start accepts. Automaton has 11362 states and 15861 transitions. Word has length 100 [2021-11-19 14:17:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:39,440 INFO L470 AbstractCegarLoop]: Abstraction has 11362 states and 15861 transitions. [2021-11-19 14:17:39,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:17:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 11362 states and 15861 transitions. [2021-11-19 14:17:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 14:17:39,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:39,442 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:39,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:39,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:39,655 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:39,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:39,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2131368460, now seen corresponding path program 1 times [2021-11-19 14:17:39,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:39,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909902584] [2021-11-19 14:17:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:39,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:39,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:39,660 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:39,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:17:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:44,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 4273 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:17:44,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-19 14:17:45,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-19 14:17:45,550 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:45,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909902584] [2021-11-19 14:17:45,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909902584] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:17:45,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:17:45,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:17:45,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464595901] [2021-11-19 14:17:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:45,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:17:45,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:17:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:17:45,552 INFO L87 Difference]: Start difference. First operand 11362 states and 15861 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:17:46,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:46,306 INFO L93 Difference]: Finished difference Result 11368 states and 15866 transitions. [2021-11-19 14:17:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:17:46,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 105 [2021-11-19 14:17:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:46,346 INFO L225 Difference]: With dead ends: 11368 [2021-11-19 14:17:46,346 INFO L226 Difference]: Without dead ends: 11366 [2021-11-19 14:17:46,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:17:46,351 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3978 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3981 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:46,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3981 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:17:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states. [2021-11-19 14:17:47,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 11366. [2021-11-19 14:17:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11366 states, 7498 states have (on average 1.3000800213390238) internal successors, (9748), 7820 states have internal predecessors, (9748), 3040 states have call successors, (3040), 844 states have call predecessors, (3040), 825 states have return successors, (3076), 2949 states have call predecessors, (3076), 3037 states have call successors, (3076) [2021-11-19 14:17:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11366 states to 11366 states and 15864 transitions. [2021-11-19 14:17:47,233 INFO L78 Accepts]: Start accepts. Automaton has 11366 states and 15864 transitions. Word has length 105 [2021-11-19 14:17:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:47,234 INFO L470 AbstractCegarLoop]: Abstraction has 11366 states and 15864 transitions. [2021-11-19 14:17:47,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:17:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 11366 states and 15864 transitions. [2021-11-19 14:17:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:17:47,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:47,237 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:47,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-19 14:17:47,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:47,438 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1442071326, now seen corresponding path program 1 times [2021-11-19 14:17:47,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:47,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834443370] [2021-11-19 14:17:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:47,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:47,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:47,443 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:47,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:17:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:52,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 4280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:17:52,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-19 14:17:52,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-19 14:17:53,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:53,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834443370] [2021-11-19 14:17:53,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834443370] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:17:53,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:17:53,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:17:53,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417528989] [2021-11-19 14:17:53,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:53,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:17:53,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:53,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:17:53,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:17:53,254 INFO L87 Difference]: Start difference. First operand 11366 states and 15864 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-19 14:17:54,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:54,089 INFO L93 Difference]: Finished difference Result 11372 states and 15869 transitions. [2021-11-19 14:17:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:17:54,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 110 [2021-11-19 14:17:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:54,125 INFO L225 Difference]: With dead ends: 11372 [2021-11-19 14:17:54,125 INFO L226 Difference]: Without dead ends: 11370 [2021-11-19 14:17:54,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:17:54,133 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3978 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3980 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:54,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3980 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:17:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11370 states. [2021-11-19 14:17:55,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11370 to 11370. [2021-11-19 14:17:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11370 states, 7501 states have (on average 1.2999600053326223) internal successors, (9751), 7823 states have internal predecessors, (9751), 3040 states have call successors, (3040), 845 states have call predecessors, (3040), 826 states have return successors, (3076), 2949 states have call predecessors, (3076), 3037 states have call successors, (3076) [2021-11-19 14:17:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11370 states to 11370 states and 15867 transitions. [2021-11-19 14:17:55,115 INFO L78 Accepts]: Start accepts. Automaton has 11370 states and 15867 transitions. Word has length 110 [2021-11-19 14:17:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:55,115 INFO L470 AbstractCegarLoop]: Abstraction has 11370 states and 15867 transitions. [2021-11-19 14:17:55,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-19 14:17:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 11370 states and 15867 transitions. [2021-11-19 14:17:55,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:17:55,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:55,119 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:55,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:55,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:55,335 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1452662156, now seen corresponding path program 1 times [2021-11-19 14:17:55,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:55,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615102583] [2021-11-19 14:17:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:55,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:55,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:55,342 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:55,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:17:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:00,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 4287 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:18:00,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-19 14:18:00,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-19 14:18:01,353 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:18:01,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615102583] [2021-11-19 14:18:01,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615102583] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:18:01,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:18:01,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:18:01,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578800502] [2021-11-19 14:18:01,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:01,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:18:01,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:18:01,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:18:01,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:18:01,356 INFO L87 Difference]: Start difference. First operand 11370 states and 15867 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:18:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:02,071 INFO L93 Difference]: Finished difference Result 11376 states and 15872 transitions. [2021-11-19 14:18:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:18:02,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 115 [2021-11-19 14:18:02,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:02,100 INFO L225 Difference]: With dead ends: 11376 [2021-11-19 14:18:02,100 INFO L226 Difference]: Without dead ends: 11372 [2021-11-19 14:18:02,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:18:02,107 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3978 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3979 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:02,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3979 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:18:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11372 states. [2021-11-19 14:18:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11372 to 11372. [2021-11-19 14:18:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11372 states, 7503 states have (on average 1.299746767959483) internal successors, (9752), 7824 states have internal predecessors, (9752), 3040 states have call successors, (3040), 846 states have call predecessors, (3040), 826 states have return successors, (3076), 2949 states have call predecessors, (3076), 3037 states have call successors, (3076) [2021-11-19 14:18:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11372 states to 11372 states and 15868 transitions. [2021-11-19 14:18:03,074 INFO L78 Accepts]: Start accepts. Automaton has 11372 states and 15868 transitions. Word has length 115 [2021-11-19 14:18:03,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:03,075 INFO L470 AbstractCegarLoop]: Abstraction has 11372 states and 15868 transitions. [2021-11-19 14:18:03,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:18:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 11372 states and 15868 transitions. [2021-11-19 14:18:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 14:18:03,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:03,078 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:03,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:03,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:18:03,295 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:18:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:03,295 INFO L85 PathProgramCache]: Analyzing trace with hash -410812446, now seen corresponding path program 1 times [2021-11-19 14:18:03,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:18:03,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255097039] [2021-11-19 14:18:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:03,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:18:03,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:18:03,301 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:18:03,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:18:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:07,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 4294 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:18:07,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-19 14:18:08,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-19 14:18:09,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:18:09,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255097039] [2021-11-19 14:18:09,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255097039] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:18:09,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:18:09,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:18:09,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034759325] [2021-11-19 14:18:09,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:09,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:18:09,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:18:09,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:18:09,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:18:09,004 INFO L87 Difference]: Start difference. First operand 11372 states and 15868 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 14:18:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:09,955 INFO L93 Difference]: Finished difference Result 13008 states and 17875 transitions. [2021-11-19 14:18:09,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:18:09,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 120 [2021-11-19 14:18:09,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:09,989 INFO L225 Difference]: With dead ends: 13008 [2021-11-19 14:18:09,989 INFO L226 Difference]: Without dead ends: 12876 [2021-11-19 14:18:09,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:18:09,994 INFO L933 BasicCegarLoop]: 4141 mSDtfsCounter, 3659 mSDsluCounter, 9153 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3659 SdHoareTripleChecker+Valid, 13294 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:09,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3659 Valid, 13294 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:18:10,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12876 states. [2021-11-19 14:18:10,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12876 to 12854. [2021-11-19 14:18:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12854 states, 8493 states have (on average 1.2888260920758272) internal successors, (10946), 8826 states have internal predecessors, (10946), 3325 states have call successors, (3325), 1064 states have call predecessors, (3325), 1034 states have return successors, (3432), 3220 states have call predecessors, (3432), 3324 states have call successors, (3432) [2021-11-19 14:18:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12854 states to 12854 states and 17703 transitions. [2021-11-19 14:18:10,947 INFO L78 Accepts]: Start accepts. Automaton has 12854 states and 17703 transitions. Word has length 120 [2021-11-19 14:18:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:10,948 INFO L470 AbstractCegarLoop]: Abstraction has 12854 states and 17703 transitions. [2021-11-19 14:18:10,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 14:18:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 12854 states and 17703 transitions. [2021-11-19 14:18:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-19 14:18:10,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:10,952 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:11,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:11,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:18:11,160 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:18:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash 590211594, now seen corresponding path program 1 times [2021-11-19 14:18:11,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:18:11,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115537380] [2021-11-19 14:18:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:11,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:18:11,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:18:11,164 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:18:11,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:18:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:15,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 4538 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-19 14:18:15,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-19 14:18:17,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-11-19 14:18:19,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:18:19,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115537380] [2021-11-19 14:18:19,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115537380] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:18:19,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:18:19,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 20 [2021-11-19 14:18:19,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806422926] [2021-11-19 14:18:19,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:19,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:18:19,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:18:19,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:18:19,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:18:19,742 INFO L87 Difference]: Start difference. First operand 12854 states and 17703 transitions. Second operand has 13 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 5 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-19 14:18:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:22,779 INFO L93 Difference]: Finished difference Result 25893 states and 35664 transitions. [2021-11-19 14:18:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:18:22,780 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 5 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 165 [2021-11-19 14:18:22,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:22,827 INFO L225 Difference]: With dead ends: 25893 [2021-11-19 14:18:22,827 INFO L226 Difference]: Without dead ends: 13064 [2021-11-19 14:18:22,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:18:22,881 INFO L933 BasicCegarLoop]: 4205 mSDtfsCounter, 270 mSDsluCounter, 33226 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 37431 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:22,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 37431 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:18:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13064 states. [2021-11-19 14:18:23,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13064 to 12854. [2021-11-19 14:18:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12854 states, 8493 states have (on average 1.2887083480513364) internal successors, (10945), 8825 states have internal predecessors, (10945), 3325 states have call successors, (3325), 1064 states have call predecessors, (3325), 1034 states have return successors, (3432), 3220 states have call predecessors, (3432), 3324 states have call successors, (3432) [2021-11-19 14:18:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12854 states to 12854 states and 17702 transitions. [2021-11-19 14:18:23,978 INFO L78 Accepts]: Start accepts. Automaton has 12854 states and 17702 transitions. Word has length 165 [2021-11-19 14:18:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:23,979 INFO L470 AbstractCegarLoop]: Abstraction has 12854 states and 17702 transitions. [2021-11-19 14:18:23,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 5 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-19 14:18:23,979 INFO L276 IsEmpty]: Start isEmpty. Operand 12854 states and 17702 transitions. [2021-11-19 14:18:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-19 14:18:23,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:23,983 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:24,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:24,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:18:24,189 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:18:24,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:24,189 INFO L85 PathProgramCache]: Analyzing trace with hash -564504723, now seen corresponding path program 1 times [2021-11-19 14:18:24,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:18:24,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684208205] [2021-11-19 14:18:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:24,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:18:24,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:18:24,194 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:18:24,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:18:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:29,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 4549 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 14:18:29,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-19 14:18:30,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-19 14:18:32,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:18:32,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684208205] [2021-11-19 14:18:32,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684208205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:32,120 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:32,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 25 [2021-11-19 14:18:32,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018592719] [2021-11-19 14:18:32,120 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:32,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 14:18:32,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:18:32,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 14:18:32,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:18:32,122 INFO L87 Difference]: Start difference. First operand 12854 states and 17702 transitions. Second operand has 25 states, 23 states have (on average 4.086956521739131) internal successors, (94), 21 states have internal predecessors, (94), 8 states have call successors, (35), 2 states have call predecessors, (35), 7 states have return successors, (30), 10 states have call predecessors, (30), 8 states have call successors, (30) [2021-11-19 14:18:39,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:39,079 INFO L93 Difference]: Finished difference Result 25998 states and 35839 transitions. [2021-11-19 14:18:39,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:18:39,080 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.086956521739131) internal successors, (94), 21 states have internal predecessors, (94), 8 states have call successors, (35), 2 states have call predecessors, (35), 7 states have return successors, (30), 10 states have call predecessors, (30), 8 states have call successors, (30) Word has length 169 [2021-11-19 14:18:39,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:39,156 INFO L225 Difference]: With dead ends: 25998 [2021-11-19 14:18:39,156 INFO L226 Difference]: Without dead ends: 13171 [2021-11-19 14:18:39,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=180, Invalid=1226, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 14:18:39,204 INFO L933 BasicCegarLoop]: 4550 mSDtfsCounter, 1054 mSDsluCounter, 89019 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 93569 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:39,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 93569 Invalid, 1729 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [325 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 14:18:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13171 states. [2021-11-19 14:18:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13171 to 12641. [2021-11-19 14:18:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12641 states, 8347 states have (on average 1.2881274709476458) internal successors, (10752), 8673 states have internal predecessors, (10752), 3270 states have call successors, (3270), 1052 states have call predecessors, (3270), 1022 states have return successors, (3377), 3168 states have call predecessors, (3377), 3269 states have call successors, (3377) [2021-11-19 14:18:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12641 states to 12641 states and 17399 transitions. [2021-11-19 14:18:40,253 INFO L78 Accepts]: Start accepts. Automaton has 12641 states and 17399 transitions. Word has length 169 [2021-11-19 14:18:40,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:40,254 INFO L470 AbstractCegarLoop]: Abstraction has 12641 states and 17399 transitions. [2021-11-19 14:18:40,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.086956521739131) internal successors, (94), 21 states have internal predecessors, (94), 8 states have call successors, (35), 2 states have call predecessors, (35), 7 states have return successors, (30), 10 states have call predecessors, (30), 8 states have call successors, (30) [2021-11-19 14:18:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand 12641 states and 17399 transitions. [2021-11-19 14:18:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-19 14:18:40,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:40,257 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2021-11-19 14:18:40,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:40,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:18:40,471 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:18:40,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1806149083, now seen corresponding path program 1 times [2021-11-19 14:18:40,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:18:40,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428080202] [2021-11-19 14:18:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:40,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:18:40,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:18:40,476 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:18:40,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:18:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:45,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 4628 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:18:45,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 14:18:46,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-19 14:18:46,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:18:46,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428080202] [2021-11-19 14:18:46,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428080202] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:46,716 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:46,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-19 14:18:46,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783158335] [2021-11-19 14:18:46,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:46,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:18:46,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:18:46,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:18:46,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:46,718 INFO L87 Difference]: Start difference. First operand 12641 states and 17399 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-19 14:18:47,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:47,556 INFO L93 Difference]: Finished difference Result 20728 states and 28507 transitions. [2021-11-19 14:18:47,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:18:47,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 144 [2021-11-19 14:18:47,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:47,605 INFO L225 Difference]: With dead ends: 20728 [2021-11-19 14:18:47,605 INFO L226 Difference]: Without dead ends: 12615 [2021-11-19 14:18:47,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:47,633 INFO L933 BasicCegarLoop]: 3950 mSDtfsCounter, 3933 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3933 SdHoareTripleChecker+Valid, 3950 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:47,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3933 Valid, 3950 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:18:47,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12615 states. [2021-11-19 14:18:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12615 to 12615. [2021-11-19 14:18:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12615 states, 8328 states have (on average 1.2883045148895294) internal successors, (10729), 8654 states have internal predecessors, (10729), 3264 states have call successors, (3264), 1051 states have call predecessors, (3264), 1021 states have return successors, (3371), 3162 states have call predecessors, (3371), 3263 states have call successors, (3371) [2021-11-19 14:18:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12615 states to 12615 states and 17364 transitions. [2021-11-19 14:18:48,671 INFO L78 Accepts]: Start accepts. Automaton has 12615 states and 17364 transitions. Word has length 144 [2021-11-19 14:18:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:48,671 INFO L470 AbstractCegarLoop]: Abstraction has 12615 states and 17364 transitions. [2021-11-19 14:18:48,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-19 14:18:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 12615 states and 17364 transitions. [2021-11-19 14:18:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-19 14:18:48,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:48,676 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:18:48,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-19 14:18:48,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:18:48,893 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:18:48,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:48,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2069298782, now seen corresponding path program 1 times [2021-11-19 14:18:48,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:18:48,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817224483] [2021-11-19 14:18:48,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:48,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:18:48,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:18:48,900 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:18:48,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:18:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:55,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 4763 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:18:55,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-19 14:18:56,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-11-19 14:18:56,828 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:18:56,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817224483] [2021-11-19 14:18:56,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817224483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:56,828 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:56,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-19 14:18:56,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130446524] [2021-11-19 14:18:56,828 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:56,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:18:56,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:18:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:18:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:18:56,830 INFO L87 Difference]: Start difference. First operand 12615 states and 17364 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-19 14:19:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:00,360 INFO L93 Difference]: Finished difference Result 25213 states and 34705 transitions. [2021-11-19 14:19:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:19:00,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 222 [2021-11-19 14:19:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:00,423 INFO L225 Difference]: With dead ends: 25213 [2021-11-19 14:19:00,423 INFO L226 Difference]: Without dead ends: 12615 [2021-11-19 14:19:00,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:19:00,472 INFO L933 BasicCegarLoop]: 3943 mSDtfsCounter, 6366 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6366 SdHoareTripleChecker+Valid, 7880 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1446 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:00,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6366 Valid, 7880 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1446 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:19:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12615 states. [2021-11-19 14:19:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12615 to 12615. [2021-11-19 14:19:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12615 states, 8328 states have (on average 1.2880643611911624) internal successors, (10727), 8654 states have internal predecessors, (10727), 3264 states have call successors, (3264), 1051 states have call predecessors, (3264), 1021 states have return successors, (3371), 3162 states have call predecessors, (3371), 3263 states have call successors, (3371) [2021-11-19 14:19:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12615 states to 12615 states and 17362 transitions. [2021-11-19 14:19:01,679 INFO L78 Accepts]: Start accepts. Automaton has 12615 states and 17362 transitions. Word has length 222 [2021-11-19 14:19:01,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:01,680 INFO L470 AbstractCegarLoop]: Abstraction has 12615 states and 17362 transitions. [2021-11-19 14:19:01,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-19 14:19:01,680 INFO L276 IsEmpty]: Start isEmpty. Operand 12615 states and 17362 transitions. [2021-11-19 14:19:01,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-19 14:19:01,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:01,686 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:19:01,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:01,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:01,911 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:19:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:01,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1592645465, now seen corresponding path program 1 times [2021-11-19 14:19:01,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:01,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042379465] [2021-11-19 14:19:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:01,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:01,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:01,919 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:01,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:19:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:07,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 4766 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:19:07,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:08,752 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-19 14:19:08,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-11-19 14:19:09,510 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:09,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042379465] [2021-11-19 14:19:09,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042379465] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:09,510 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:09,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 14:19:09,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032402969] [2021-11-19 14:19:09,511 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:09,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:19:09,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:19:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:19:09,513 INFO L87 Difference]: Start difference. First operand 12615 states and 17362 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-19 14:19:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:20,754 INFO L93 Difference]: Finished difference Result 38441 states and 52877 transitions. [2021-11-19 14:19:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:19:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 224 [2021-11-19 14:19:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:20,834 INFO L225 Difference]: With dead ends: 38441 [2021-11-19 14:19:20,834 INFO L226 Difference]: Without dead ends: 25843 [2021-11-19 14:19:20,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:19:20,868 INFO L933 BasicCegarLoop]: 7311 mSDtfsCounter, 8580 mSDsluCounter, 28657 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8646 SdHoareTripleChecker+Valid, 35968 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:20,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8646 Valid, 35968 Invalid, 2424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [289 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-11-19 14:19:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25843 states. [2021-11-19 14:19:22,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25843 to 17056. [2021-11-19 14:19:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17056 states, 11278 states have (on average 1.2897676893066146) internal successors, (14546), 11721 states have internal predecessors, (14546), 4406 states have call successors, (4406), 1410 states have call predecessors, (4406), 1370 states have return successors, (4549), 4267 states have call predecessors, (4549), 4405 states have call successors, (4549) [2021-11-19 14:19:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17056 states to 17056 states and 23501 transitions. [2021-11-19 14:19:22,596 INFO L78 Accepts]: Start accepts. Automaton has 17056 states and 23501 transitions. Word has length 224 [2021-11-19 14:19:22,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:22,596 INFO L470 AbstractCegarLoop]: Abstraction has 17056 states and 23501 transitions. [2021-11-19 14:19:22,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-19 14:19:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 17056 states and 23501 transitions. [2021-11-19 14:19:22,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-19 14:19:22,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:22,602 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:19:22,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:22,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:22,815 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:19:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1104598359, now seen corresponding path program 1 times [2021-11-19 14:19:22,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:22,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933863469] [2021-11-19 14:19:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:22,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:22,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:22,821 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:22,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:19:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:29,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 4768 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:19:29,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-19 14:19:30,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-11-19 14:19:31,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:31,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933863469] [2021-11-19 14:19:31,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933863469] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:19:31,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:19:31,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-19 14:19:31,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585887788] [2021-11-19 14:19:31,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:31,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:19:31,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:31,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:19:31,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:19:31,897 INFO L87 Difference]: Start difference. First operand 17056 states and 23501 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 14:19:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:33,529 INFO L93 Difference]: Finished difference Result 34140 states and 47058 transitions. [2021-11-19 14:19:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:19:33,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 224 [2021-11-19 14:19:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:33,588 INFO L225 Difference]: With dead ends: 34140 [2021-11-19 14:19:33,588 INFO L226 Difference]: Without dead ends: 17101 [2021-11-19 14:19:33,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:19:33,636 INFO L933 BasicCegarLoop]: 3946 mSDtfsCounter, 1 mSDsluCounter, 19721 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23667 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:33,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 23667 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:19:33,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17101 states. [2021-11-19 14:19:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17101 to 17077. [2021-11-19 14:19:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 11293 states have (on average 1.289382803506597) internal successors, (14561), 11736 states have internal predecessors, (14561), 4406 states have call successors, (4406), 1410 states have call predecessors, (4406), 1376 states have return successors, (4570), 4273 states have call predecessors, (4570), 4405 states have call successors, (4570) [2021-11-19 14:19:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 23537 transitions. [2021-11-19 14:19:35,295 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 23537 transitions. Word has length 224 [2021-11-19 14:19:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:35,296 INFO L470 AbstractCegarLoop]: Abstraction has 17077 states and 23537 transitions. [2021-11-19 14:19:35,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 14:19:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 23537 transitions. [2021-11-19 14:19:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-19 14:19:35,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:35,303 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:19:35,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:35,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:35,527 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:19:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:35,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1098239502, now seen corresponding path program 1 times [2021-11-19 14:19:35,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:35,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171332989] [2021-11-19 14:19:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:35,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:35,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:35,532 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:35,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 14:19:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:41,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 4807 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:19:41,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-19 14:19:42,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-11-19 14:19:43,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:43,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171332989] [2021-11-19 14:19:43,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171332989] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:19:43,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:19:43,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-19 14:19:43,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466747049] [2021-11-19 14:19:43,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:43,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:19:43,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:43,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:19:43,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:19:43,604 INFO L87 Difference]: Start difference. First operand 17077 states and 23537 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 14:19:45,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:45,069 INFO L93 Difference]: Finished difference Result 34416 states and 47455 transitions. [2021-11-19 14:19:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:19:45,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) Word has length 240 [2021-11-19 14:19:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:45,122 INFO L225 Difference]: With dead ends: 34416 [2021-11-19 14:19:45,122 INFO L226 Difference]: Without dead ends: 17356 [2021-11-19 14:19:45,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:19:45,163 INFO L933 BasicCegarLoop]: 4253 mSDtfsCounter, 194 mSDsluCounter, 21004 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 25257 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:45,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 25257 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:19:45,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17356 states. [2021-11-19 14:19:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17356 to 17083. [2021-11-19 14:19:46,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17083 states, 11299 states have (on average 1.2892291353217098) internal successors, (14567), 11739 states have internal predecessors, (14567), 4406 states have call successors, (4406), 1410 states have call predecessors, (4406), 1376 states have return successors, (4570), 4276 states have call predecessors, (4570), 4405 states have call successors, (4570) [2021-11-19 14:19:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17083 states to 17083 states and 23543 transitions. [2021-11-19 14:19:46,702 INFO L78 Accepts]: Start accepts. Automaton has 17083 states and 23543 transitions. Word has length 240 [2021-11-19 14:19:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:46,702 INFO L470 AbstractCegarLoop]: Abstraction has 17083 states and 23543 transitions. [2021-11-19 14:19:46,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 14:19:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand 17083 states and 23543 transitions. [2021-11-19 14:19:46,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-19 14:19:46,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:46,707 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:46,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:46,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:46,923 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:19:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:46,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1954403490, now seen corresponding path program 1 times [2021-11-19 14:19:46,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:46,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521940846] [2021-11-19 14:19:46,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:46,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:46,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:46,928 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:46,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 14:19:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:52,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 4735 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:19:52,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-11-19 14:19:54,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-11-19 14:19:55,009 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:55,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521940846] [2021-11-19 14:19:55,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521940846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:55,009 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:55,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 14:19:55,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623051438] [2021-11-19 14:19:55,010 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:55,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:19:55,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:19:55,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:19:55,011 INFO L87 Difference]: Start difference. First operand 17083 states and 23543 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (57), 4 states have call predecessors, (57), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-19 14:19:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:56,523 INFO L93 Difference]: Finished difference Result 17133 states and 23590 transitions. [2021-11-19 14:19:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:19:56,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (57), 4 states have call predecessors, (57), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 240 [2021-11-19 14:19:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:56,565 INFO L225 Difference]: With dead ends: 17133 [2021-11-19 14:19:56,565 INFO L226 Difference]: Without dead ends: 17131 [2021-11-19 14:19:56,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:19:56,573 INFO L933 BasicCegarLoop]: 4066 mSDtfsCounter, 3498 mSDsluCounter, 17146 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 21212 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:56,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 21212 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:19:56,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17131 states. [2021-11-19 14:19:57,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17131 to 17115. [2021-11-19 14:19:57,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17115 states, 11323 states have (on average 1.2879095646030203) internal successors, (14583), 11763 states have internal predecessors, (14583), 4406 states have call successors, (4406), 1418 states have call predecessors, (4406), 1384 states have return successors, (4570), 4276 states have call predecessors, (4570), 4405 states have call successors, (4570) [2021-11-19 14:19:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17115 states to 17115 states and 23559 transitions. [2021-11-19 14:19:57,874 INFO L78 Accepts]: Start accepts. Automaton has 17115 states and 23559 transitions. Word has length 240 [2021-11-19 14:19:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:57,875 INFO L470 AbstractCegarLoop]: Abstraction has 17115 states and 23559 transitions. [2021-11-19 14:19:57,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (57), 4 states have call predecessors, (57), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-19 14:19:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 17115 states and 23559 transitions. [2021-11-19 14:19:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-19 14:19:57,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:57,879 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:57,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-19 14:19:58,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:58,079 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:19:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2018772096, now seen corresponding path program 1 times [2021-11-19 14:19:58,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:58,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138029730] [2021-11-19 14:19:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:58,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:58,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:58,085 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:58,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 14:20:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:03,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 4855 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:20:03,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2021-11-19 14:20:04,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2021-11-19 14:20:04,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:04,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138029730] [2021-11-19 14:20:04,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138029730] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:20:04,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:20:04,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-11-19 14:20:04,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025934526] [2021-11-19 14:20:04,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:04,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:20:04,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:04,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:20:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:20:04,772 INFO L87 Difference]: Start difference. First operand 17115 states and 23559 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 14:20:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:06,879 INFO L93 Difference]: Finished difference Result 34253 states and 47178 transitions. [2021-11-19 14:20:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:20:06,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 274 [2021-11-19 14:20:06,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:06,921 INFO L225 Difference]: With dead ends: 34253 [2021-11-19 14:20:06,921 INFO L226 Difference]: Without dead ends: 17155 [2021-11-19 14:20:06,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:20:06,958 INFO L933 BasicCegarLoop]: 3911 mSDtfsCounter, 34 mSDsluCounter, 23393 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 27304 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:06,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 27304 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:20:06,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17155 states. [2021-11-19 14:20:08,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17155 to 17127. [2021-11-19 14:20:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17127 states, 11335 states have (on average 1.2876047640052934) internal successors, (14595), 11775 states have internal predecessors, (14595), 4406 states have call successors, (4406), 1418 states have call predecessors, (4406), 1384 states have return successors, (4570), 4276 states have call predecessors, (4570), 4405 states have call successors, (4570) [2021-11-19 14:20:08,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17127 states to 17127 states and 23571 transitions. [2021-11-19 14:20:08,311 INFO L78 Accepts]: Start accepts. Automaton has 17127 states and 23571 transitions. Word has length 274 [2021-11-19 14:20:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:08,312 INFO L470 AbstractCegarLoop]: Abstraction has 17127 states and 23571 transitions. [2021-11-19 14:20:08,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 14:20:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 17127 states and 23571 transitions. [2021-11-19 14:20:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-19 14:20:08,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:08,316 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:08,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:08,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:20:08,516 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:20:08,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:08,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1850873678, now seen corresponding path program 1 times [2021-11-19 14:20:08,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:08,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882996951] [2021-11-19 14:20:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:08,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:08,521 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:08,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-19 14:20:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:14,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 4800 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:20:14,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-11-19 14:20:14,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-11-19 14:20:15,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:15,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882996951] [2021-11-19 14:20:15,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882996951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:15,169 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:15,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:20:15,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721970971] [2021-11-19 14:20:15,170 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:15,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:20:15,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:20:15,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:20:15,172 INFO L87 Difference]: Start difference. First operand 17127 states and 23571 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-19 14:20:17,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:17,078 INFO L93 Difference]: Finished difference Result 17177 states and 23618 transitions. [2021-11-19 14:20:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:20:17,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 272 [2021-11-19 14:20:17,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:17,119 INFO L225 Difference]: With dead ends: 17177 [2021-11-19 14:20:17,119 INFO L226 Difference]: Without dead ends: 17155 [2021-11-19 14:20:17,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:20:17,127 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 878 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 21597 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:17,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 21597 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:20:17,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17155 states. [2021-11-19 14:20:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17155 to 17139. [2021-11-19 14:20:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17139 states, 11344 states have (on average 1.286406911142454) internal successors, (14593), 11783 states have internal predecessors, (14593), 4402 states have call successors, (4402), 1425 states have call predecessors, (4402), 1391 states have return successors, (4567), 4273 states have call predecessors, (4567), 4402 states have call successors, (4567) [2021-11-19 14:20:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17139 states to 17139 states and 23562 transitions. [2021-11-19 14:20:18,462 INFO L78 Accepts]: Start accepts. Automaton has 17139 states and 23562 transitions. Word has length 272 [2021-11-19 14:20:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:18,462 INFO L470 AbstractCegarLoop]: Abstraction has 17139 states and 23562 transitions. [2021-11-19 14:20:18,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-19 14:20:18,462 INFO L276 IsEmpty]: Start isEmpty. Operand 17139 states and 23562 transitions. [2021-11-19 14:20:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-19 14:20:18,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:18,467 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:20:18,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:18,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:20:18,691 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:20:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash 324292834, now seen corresponding path program 1 times [2021-11-19 14:20:18,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:18,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143697892] [2021-11-19 14:20:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:18,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:18,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:18,696 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:18,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 14:20:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:25,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 4928 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 14:20:25,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 129 proven. 23 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-19 14:20:27,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-11-19 14:20:30,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:30,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143697892] [2021-11-19 14:20:30,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143697892] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:20:30,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [711098328] [2021-11-19 14:20:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:30,844 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:20:30,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:20:30,845 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:20:30,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-19 14:20:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:32,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 4928 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:20:32,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2021-11-19 14:20:33,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-19 14:20:34,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [711098328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:34,404 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:20:34,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [15, 14] total 29 [2021-11-19 14:20:34,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711418440] [2021-11-19 14:20:34,405 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:34,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:20:34,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:34,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:20:34,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2021-11-19 14:20:34,406 INFO L87 Difference]: Start difference. First operand 17139 states and 23562 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-19 14:20:35,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:35,818 INFO L93 Difference]: Finished difference Result 34321 states and 47207 transitions. [2021-11-19 14:20:35,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:20:35,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 283 [2021-11-19 14:20:35,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:35,860 INFO L225 Difference]: With dead ends: 34321 [2021-11-19 14:20:35,861 INFO L226 Difference]: Without dead ends: 17199 [2021-11-19 14:20:35,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1101 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2021-11-19 14:20:35,897 INFO L933 BasicCegarLoop]: 3938 mSDtfsCounter, 12 mSDsluCounter, 15716 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 19654 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:35,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 19654 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:20:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17199 states. [2021-11-19 14:20:37,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17199 to 17147. [2021-11-19 14:20:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17147 states, 11352 states have (on average 1.2862050739957718) internal successors, (14601), 11791 states have internal predecessors, (14601), 4402 states have call successors, (4402), 1425 states have call predecessors, (4402), 1391 states have return successors, (4567), 4273 states have call predecessors, (4567), 4402 states have call successors, (4567) [2021-11-19 14:20:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17147 states to 17147 states and 23570 transitions. [2021-11-19 14:20:37,271 INFO L78 Accepts]: Start accepts. Automaton has 17147 states and 23570 transitions. Word has length 283 [2021-11-19 14:20:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:37,271 INFO L470 AbstractCegarLoop]: Abstraction has 17147 states and 23570 transitions. [2021-11-19 14:20:37,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-19 14:20:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 17147 states and 23570 transitions. [2021-11-19 14:20:37,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-19 14:20:37,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:37,275 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:20:37,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:37,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:37,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:20:37,677 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:20:37,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:37,679 INFO L85 PathProgramCache]: Analyzing trace with hash -20017564, now seen corresponding path program 1 times [2021-11-19 14:20:37,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:37,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403266909] [2021-11-19 14:20:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:37,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:37,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:37,697 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:37,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 14:20:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:44,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 4938 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 14:20:44,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 129 proven. 23 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-19 14:20:46,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-11-19 14:20:49,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:49,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403266909] [2021-11-19 14:20:49,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403266909] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:20:49,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1664843100] [2021-11-19 14:20:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:49,898 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:20:49,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:20:49,899 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:20:49,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-19 14:21:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:02,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 4938 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:21:02,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-19 14:21:03,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-19 14:21:04,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1664843100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:04,669 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:21:04,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [15, 14] total 33 [2021-11-19 14:21:04,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971731068] [2021-11-19 14:21:04,670 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:04,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:21:04,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:04,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:21:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=970, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 14:21:04,672 INFO L87 Difference]: Start difference. First operand 17147 states and 23570 transitions. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 8 states have internal predecessors, (150), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (49), 4 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-19 14:21:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:06,932 INFO L93 Difference]: Finished difference Result 30559 states and 42025 transitions. [2021-11-19 14:21:06,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:21:06,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 8 states have internal predecessors, (150), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (49), 4 states have call predecessors, (49), 2 states have call successors, (49) Word has length 283 [2021-11-19 14:21:06,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:06,977 INFO L225 Difference]: With dead ends: 30559 [2021-11-19 14:21:06,977 INFO L226 Difference]: Without dead ends: 17671 [2021-11-19 14:21:07,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1130 GetRequests, 1097 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 14:21:07,001 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 944 mSDsluCounter, 20768 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 25262 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:07,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 25262 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:21:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17671 states. [2021-11-19 14:21:08,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17671 to 17183. [2021-11-19 14:21:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17183 states, 11376 states have (on average 1.2856012658227849) internal successors, (14625), 11815 states have internal predecessors, (14625), 4411 states have call successors, (4411), 1425 states have call predecessors, (4411), 1394 states have return successors, (4579), 4285 states have call predecessors, (4579), 4411 states have call successors, (4579) [2021-11-19 14:21:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17183 states to 17183 states and 23615 transitions. [2021-11-19 14:21:08,483 INFO L78 Accepts]: Start accepts. Automaton has 17183 states and 23615 transitions. Word has length 283 [2021-11-19 14:21:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:08,485 INFO L470 AbstractCegarLoop]: Abstraction has 17183 states and 23615 transitions. [2021-11-19 14:21:08,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 8 states have internal predecessors, (150), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (49), 4 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-19 14:21:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 17183 states and 23615 transitions. [2021-11-19 14:21:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-11-19 14:21:08,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:08,493 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2021-11-19 14:21:08,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:08,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:08,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:08,907 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:21:08,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:08,908 INFO L85 PathProgramCache]: Analyzing trace with hash -65166391, now seen corresponding path program 1 times [2021-11-19 14:21:08,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:08,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190557707] [2021-11-19 14:21:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:08,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:08,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:08,912 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:08,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 14:21:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:14,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 5047 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:21:14,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-11-19 14:21:15,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-11-19 14:21:17,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:17,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190557707] [2021-11-19 14:21:17,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190557707] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:21:17,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:21:17,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 13 [2021-11-19 14:21:17,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539967232] [2021-11-19 14:21:17,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:17,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:21:17,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:21:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:21:17,171 INFO L87 Difference]: Start difference. First operand 17183 states and 23615 transitions. Second operand has 9 states, 7 states have (on average 22.0) internal successors, (154), 9 states have internal predecessors, (154), 5 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (46), 5 states have call predecessors, (46), 5 states have call successors, (46) [2021-11-19 14:21:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:19,559 INFO L93 Difference]: Finished difference Result 21115 states and 28970 transitions. [2021-11-19 14:21:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:21:19,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 22.0) internal successors, (154), 9 states have internal predecessors, (154), 5 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (46), 5 states have call predecessors, (46), 5 states have call successors, (46) Word has length 372 [2021-11-19 14:21:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:19,604 INFO L225 Difference]: With dead ends: 21115 [2021-11-19 14:21:19,604 INFO L226 Difference]: Without dead ends: 17194 [2021-11-19 14:21:19,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:21:19,615 INFO L933 BasicCegarLoop]: 3889 mSDtfsCounter, 8 mSDsluCounter, 27133 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 31022 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:19,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 31022 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:21:19,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17194 states. [2021-11-19 14:21:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17194 to 17191. [2021-11-19 14:21:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17191 states, 11381 states have (on average 1.2854757929883138) internal successors, (14630), 11819 states have internal predecessors, (14630), 4414 states have call successors, (4414), 1425 states have call predecessors, (4414), 1394 states have return successors, (4582), 4288 states have call predecessors, (4582), 4414 states have call successors, (4582) [2021-11-19 14:21:21,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17191 states to 17191 states and 23626 transitions. [2021-11-19 14:21:21,018 INFO L78 Accepts]: Start accepts. Automaton has 17191 states and 23626 transitions. Word has length 372 [2021-11-19 14:21:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:21,019 INFO L470 AbstractCegarLoop]: Abstraction has 17191 states and 23626 transitions. [2021-11-19 14:21:21,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 22.0) internal successors, (154), 9 states have internal predecessors, (154), 5 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (46), 5 states have call predecessors, (46), 5 states have call successors, (46) [2021-11-19 14:21:21,019 INFO L276 IsEmpty]: Start isEmpty. Operand 17191 states and 23626 transitions. [2021-11-19 14:21:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-11-19 14:21:21,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:21,024 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:21,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:21,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:21,225 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:21:21,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1108523634, now seen corresponding path program 1 times [2021-11-19 14:21:21,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:21,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107278149] [2021-11-19 14:21:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:21,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:21,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:21,230 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:21,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-19 14:21:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:27,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 5244 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 14:21:27,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 421 proven. 3 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-11-19 14:21:29,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 76 proven. 18 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2021-11-19 14:21:30,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:30,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107278149] [2021-11-19 14:21:30,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107278149] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:21:30,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1770646784] [2021-11-19 14:21:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:30,696 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:21:30,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:21:30,699 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:21:30,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-19 14:21:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:43,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 5244 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 14:21:43,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2021-11-19 14:21:44,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2021-11-19 14:21:45,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1770646784] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:45,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:21:45,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [9, 8] total 14 [2021-11-19 14:21:45,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51499943] [2021-11-19 14:21:45,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:45,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:21:45,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:45,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:21:45,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:21:45,400 INFO L87 Difference]: Start difference. First operand 17191 states and 23626 transitions. Second operand has 10 states, 10 states have (on average 19.7) internal successors, (197), 8 states have internal predecessors, (197), 4 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (84), 6 states have call predecessors, (84), 4 states have call successors, (84) [2021-11-19 14:21:47,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:47,558 INFO L93 Difference]: Finished difference Result 34381 states and 47282 transitions. [2021-11-19 14:21:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:21:47,559 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.7) internal successors, (197), 8 states have internal predecessors, (197), 4 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (84), 6 states have call predecessors, (84), 4 states have call successors, (84) Word has length 424 [2021-11-19 14:21:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:47,603 INFO L225 Difference]: With dead ends: 34381 [2021-11-19 14:21:47,604 INFO L226 Difference]: Without dead ends: 17207 [2021-11-19 14:21:47,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1693 GetRequests, 1679 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:21:47,638 INFO L933 BasicCegarLoop]: 3926 mSDtfsCounter, 118 mSDsluCounter, 23466 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 27392 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:47,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 27392 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:21:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17207 states. [2021-11-19 14:21:49,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17207 to 17191. [2021-11-19 14:21:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17191 states, 11381 states have (on average 1.2851243300237238) internal successors, (14626), 11815 states have internal predecessors, (14626), 4414 states have call successors, (4414), 1425 states have call predecessors, (4414), 1394 states have return successors, (4582), 4288 states have call predecessors, (4582), 4414 states have call successors, (4582) [2021-11-19 14:21:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17191 states to 17191 states and 23622 transitions. [2021-11-19 14:21:49,063 INFO L78 Accepts]: Start accepts. Automaton has 17191 states and 23622 transitions. Word has length 424 [2021-11-19 14:21:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:49,064 INFO L470 AbstractCegarLoop]: Abstraction has 17191 states and 23622 transitions. [2021-11-19 14:21:49,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.7) internal successors, (197), 8 states have internal predecessors, (197), 4 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (84), 6 states have call predecessors, (84), 4 states have call successors, (84) [2021-11-19 14:21:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 17191 states and 23622 transitions. [2021-11-19 14:21:49,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-11-19 14:21:49,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:49,070 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:49,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:49,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:49,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:49,471 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:21:49,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:49,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1164871343, now seen corresponding path program 1 times [2021-11-19 14:21:49,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:49,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680430570] [2021-11-19 14:21:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:49,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:49,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:49,476 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:49,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-19 14:21:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:55,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 5079 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:21:55,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2021-11-19 14:21:57,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2021-11-19 14:21:58,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:58,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680430570] [2021-11-19 14:21:58,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680430570] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:21:58,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:21:58,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:21:58,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250651086] [2021-11-19 14:21:58,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:58,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:21:58,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:58,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:21:58,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:21:58,922 INFO L87 Difference]: Start difference. First operand 17191 states and 23622 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-19 14:22:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:00,224 INFO L93 Difference]: Finished difference Result 17227 states and 23656 transitions. [2021-11-19 14:22:00,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:22:00,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 380 [2021-11-19 14:22:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:00,264 INFO L225 Difference]: With dead ends: 17227 [2021-11-19 14:22:00,265 INFO L226 Difference]: Without dead ends: 17225 [2021-11-19 14:22:00,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:22:00,271 INFO L933 BasicCegarLoop]: 3962 mSDtfsCounter, 3743 mSDsluCounter, 8105 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 12067 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:00,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 12067 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:22:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17225 states. [2021-11-19 14:22:01,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17225 to 17223. [2021-11-19 14:22:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17223 states, 11405 states have (on average 1.2845243314335817) internal successors, (14650), 11839 states have internal predecessors, (14650), 4414 states have call successors, (4414), 1433 states have call predecessors, (4414), 1402 states have return successors, (4582), 4288 states have call predecessors, (4582), 4414 states have call successors, (4582) [2021-11-19 14:22:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17223 states to 17223 states and 23646 transitions. [2021-11-19 14:22:01,700 INFO L78 Accepts]: Start accepts. Automaton has 17223 states and 23646 transitions. Word has length 380 [2021-11-19 14:22:01,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:01,701 INFO L470 AbstractCegarLoop]: Abstraction has 17223 states and 23646 transitions. [2021-11-19 14:22:01,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-19 14:22:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 17223 states and 23646 transitions. [2021-11-19 14:22:01,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2021-11-19 14:22:01,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:01,706 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2021-11-19 14:22:01,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:01,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:01,907 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:22:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1452060356, now seen corresponding path program 1 times [2021-11-19 14:22:01,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:01,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89294768] [2021-11-19 14:22:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:01,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:01,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:01,912 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:01,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-19 14:22:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:07,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 5096 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:22:07,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2021-11-19 14:22:10,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2021-11-19 14:22:11,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:11,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89294768] [2021-11-19 14:22:11,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89294768] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:11,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:11,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 14:22:11,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056857586] [2021-11-19 14:22:11,398 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:11,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:22:11,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:22:11,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:22:11,399 INFO L87 Difference]: Start difference. First operand 17223 states and 23646 transitions. Second operand has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 5 states have internal predecessors, (205), 2 states have call successors, (95), 4 states have call predecessors, (95), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2021-11-19 14:22:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:12,750 INFO L93 Difference]: Finished difference Result 17239 states and 23660 transitions. [2021-11-19 14:22:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:22:12,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 5 states have internal predecessors, (205), 2 states have call successors, (95), 4 states have call predecessors, (95), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) Word has length 386 [2021-11-19 14:22:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:12,793 INFO L225 Difference]: With dead ends: 17239 [2021-11-19 14:22:12,793 INFO L226 Difference]: Without dead ends: 17237 [2021-11-19 14:22:12,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:22:12,800 INFO L933 BasicCegarLoop]: 4795 mSDtfsCounter, 3321 mSDsluCounter, 21153 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3324 SdHoareTripleChecker+Valid, 25948 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:12,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3324 Valid, 25948 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:22:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17237 states. [2021-11-19 14:22:14,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17237 to 17223. [2021-11-19 14:22:14,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17223 states, 11405 states have (on average 1.2841736080666375) internal successors, (14646), 11839 states have internal predecessors, (14646), 4414 states have call successors, (4414), 1433 states have call predecessors, (4414), 1402 states have return successors, (4582), 4288 states have call predecessors, (4582), 4414 states have call successors, (4582) [2021-11-19 14:22:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17223 states to 17223 states and 23642 transitions. [2021-11-19 14:22:14,204 INFO L78 Accepts]: Start accepts. Automaton has 17223 states and 23642 transitions. Word has length 386 [2021-11-19 14:22:14,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:14,204 INFO L470 AbstractCegarLoop]: Abstraction has 17223 states and 23642 transitions. [2021-11-19 14:22:14,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 5 states have internal predecessors, (205), 2 states have call successors, (95), 4 states have call predecessors, (95), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2021-11-19 14:22:14,205 INFO L276 IsEmpty]: Start isEmpty. Operand 17223 states and 23642 transitions. [2021-11-19 14:22:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-19 14:22:14,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:14,210 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:14,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:14,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:14,411 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:22:14,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:14,412 INFO L85 PathProgramCache]: Analyzing trace with hash -679061864, now seen corresponding path program 1 times [2021-11-19 14:22:14,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:14,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568715844] [2021-11-19 14:22:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:14,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:14,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:14,416 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:14,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-19 14:22:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:22,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 5298 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:22:22,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2021-11-19 14:22:23,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2021-11-19 14:22:23,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:23,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568715844] [2021-11-19 14:22:23,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568715844] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:23,795 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:23,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:22:23,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518837238] [2021-11-19 14:22:23,795 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:23,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:22:23,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:23,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:22:23,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:22:23,797 INFO L87 Difference]: Start difference. First operand 17223 states and 23642 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2021-11-19 14:22:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:25,236 INFO L93 Difference]: Finished difference Result 34549 states and 47598 transitions. [2021-11-19 14:22:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:22:25,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 450 [2021-11-19 14:22:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:25,296 INFO L225 Difference]: With dead ends: 34549 [2021-11-19 14:22:25,296 INFO L226 Difference]: Without dead ends: 17343 [2021-11-19 14:22:25,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 896 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:22:25,337 INFO L933 BasicCegarLoop]: 3918 mSDtfsCounter, 18 mSDsluCounter, 7797 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 11715 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:25,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 11715 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:22:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17343 states. [2021-11-19 14:22:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17343 to 17295. [2021-11-19 14:22:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17295 states, 11445 states have (on average 1.2838794233289645) internal successors, (14694), 11879 states have internal predecessors, (14694), 4446 states have call successors, (4446), 1433 states have call predecessors, (4446), 1402 states have return successors, (4614), 4320 states have call predecessors, (4614), 4446 states have call successors, (4614) [2021-11-19 14:22:26,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17295 states to 17295 states and 23754 transitions. [2021-11-19 14:22:26,787 INFO L78 Accepts]: Start accepts. Automaton has 17295 states and 23754 transitions. Word has length 450 [2021-11-19 14:22:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:26,787 INFO L470 AbstractCegarLoop]: Abstraction has 17295 states and 23754 transitions. [2021-11-19 14:22:26,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2021-11-19 14:22:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 17295 states and 23754 transitions. [2021-11-19 14:22:26,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2021-11-19 14:22:26,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:26,793 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2021-11-19 14:22:26,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:26,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:26,994 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:22:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:26,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1062788983, now seen corresponding path program 1 times [2021-11-19 14:22:26,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:26,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59397732] [2021-11-19 14:22:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:26,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:26,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:27,000 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:27,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-19 14:22:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:32,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 5140 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:22:32,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 948 trivial. 0 not checked. [2021-11-19 14:22:33,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 948 trivial. 0 not checked. [2021-11-19 14:22:34,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:34,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59397732] [2021-11-19 14:22:34,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59397732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:34,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:34,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:22:34,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393010075] [2021-11-19 14:22:34,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:34,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:22:34,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:34,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:22:34,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:22:34,378 INFO L87 Difference]: Start difference. First operand 17295 states and 23754 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-19 14:22:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:36,535 INFO L93 Difference]: Finished difference Result 17327 states and 23784 transitions. [2021-11-19 14:22:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:22:36,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 416 [2021-11-19 14:22:36,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:36,585 INFO L225 Difference]: With dead ends: 17327 [2021-11-19 14:22:36,585 INFO L226 Difference]: Without dead ends: 17325 [2021-11-19 14:22:36,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:22:36,593 INFO L933 BasicCegarLoop]: 4971 mSDtfsCounter, 1979 mSDsluCounter, 23415 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 28386 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:36,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 28386 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:22:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17325 states. [2021-11-19 14:22:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17325 to 17311. [2021-11-19 14:22:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17311 states, 11457 states have (on average 1.2832329580169328) internal successors, (14702), 11891 states have internal predecessors, (14702), 4446 states have call successors, (4446), 1437 states have call predecessors, (4446), 1406 states have return successors, (4614), 4320 states have call predecessors, (4614), 4446 states have call successors, (4614) [2021-11-19 14:22:38,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17311 states to 17311 states and 23762 transitions. [2021-11-19 14:22:38,017 INFO L78 Accepts]: Start accepts. Automaton has 17311 states and 23762 transitions. Word has length 416 [2021-11-19 14:22:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:38,017 INFO L470 AbstractCegarLoop]: Abstraction has 17311 states and 23762 transitions. [2021-11-19 14:22:38,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-19 14:22:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 17311 states and 23762 transitions. [2021-11-19 14:22:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2021-11-19 14:22:38,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:38,028 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 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] [2021-11-19 14:22:38,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:38,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:38,229 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:22:38,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:38,230 INFO L85 PathProgramCache]: Analyzing trace with hash 145986963, now seen corresponding path program 1 times [2021-11-19 14:22:38,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:38,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870276388] [2021-11-19 14:22:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:38,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:38,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:38,236 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:38,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-19 14:22:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:44,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 5443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:22:44,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:44,966 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 14:22:44,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-19 14:22:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 963 trivial. 0 not checked. [2021-11-19 14:22:45,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2021-11-19 14:22:46,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:46,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870276388] [2021-11-19 14:22:46,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870276388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:46,455 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:46,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:22:46,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179870376] [2021-11-19 14:22:46,455 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:46,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:22:46,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:46,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:22:46,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:22:46,457 INFO L87 Difference]: Start difference. First operand 17311 states and 23762 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2021-11-19 14:22:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:47,947 INFO L93 Difference]: Finished difference Result 34657 states and 47619 transitions. [2021-11-19 14:22:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:22:47,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 505 [2021-11-19 14:22:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:48,012 INFO L225 Difference]: With dead ends: 34657 [2021-11-19 14:22:48,012 INFO L226 Difference]: Without dead ends: 17363 [2021-11-19 14:22:48,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 1006 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:22:48,053 INFO L933 BasicCegarLoop]: 3923 mSDtfsCounter, 9 mSDsluCounter, 7800 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11723 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:48,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 11723 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2021-11-19 14:22:48,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17363 states. [2021-11-19 14:22:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17363 to 17363. [2021-11-19 14:22:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17363 states, 11497 states have (on average 1.284335043924502) internal successors, (14766), 11931 states have internal predecessors, (14766), 4458 states have call successors, (4458), 1437 states have call predecessors, (4458), 1406 states have return successors, (4626), 4332 states have call predecessors, (4626), 4458 states have call successors, (4626) [2021-11-19 14:22:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17363 states to 17363 states and 23850 transitions. [2021-11-19 14:22:49,553 INFO L78 Accepts]: Start accepts. Automaton has 17363 states and 23850 transitions. Word has length 505 [2021-11-19 14:22:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:49,554 INFO L470 AbstractCegarLoop]: Abstraction has 17363 states and 23850 transitions. [2021-11-19 14:22:49,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2021-11-19 14:22:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 17363 states and 23850 transitions. [2021-11-19 14:22:49,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2021-11-19 14:22:49,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:49,566 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 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] [2021-11-19 14:22:49,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:49,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:49,777 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:22:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:49,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1472987951, now seen corresponding path program 1 times [2021-11-19 14:22:49,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:49,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94151625] [2021-11-19 14:22:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:49,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:49,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:49,783 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:49,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-19 14:22:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:55,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 5439 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:22:55,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 324 proven. 68 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2021-11-19 14:22:58,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2021-11-19 14:23:00,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:00,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94151625] [2021-11-19 14:23:00,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94151625] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:23:00,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:23:00,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-19 14:23:00,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145788617] [2021-11-19 14:23:00,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:00,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:23:00,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:23:00,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:23:00,040 INFO L87 Difference]: Start difference. First operand 17363 states and 23850 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 4 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2021-11-19 14:23:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:02,182 INFO L93 Difference]: Finished difference Result 35129 states and 48383 transitions. [2021-11-19 14:23:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:23:02,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 4 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) Word has length 505 [2021-11-19 14:23:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:02,237 INFO L225 Difference]: With dead ends: 35129 [2021-11-19 14:23:02,237 INFO L226 Difference]: Without dead ends: 17783 [2021-11-19 14:23:02,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 1002 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:23:02,280 INFO L933 BasicCegarLoop]: 3963 mSDtfsCounter, 3989 mSDsluCounter, 7785 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3993 SdHoareTripleChecker+Valid, 11748 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:02,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3993 Valid, 11748 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:23:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17783 states. [2021-11-19 14:23:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17783 to 17703. [2021-11-19 14:23:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17703 states, 11749 states have (on average 1.2881096263511789) internal successors, (15134), 12203 states have internal predecessors, (15134), 4546 states have call successors, (4546), 1437 states have call predecessors, (4546), 1406 states have return successors, (4718), 4424 states have call predecessors, (4718), 4546 states have call successors, (4718) [2021-11-19 14:23:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17703 states to 17703 states and 24398 transitions. [2021-11-19 14:23:03,860 INFO L78 Accepts]: Start accepts. Automaton has 17703 states and 24398 transitions. Word has length 505 [2021-11-19 14:23:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:03,861 INFO L470 AbstractCegarLoop]: Abstraction has 17703 states and 24398 transitions. [2021-11-19 14:23:03,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 4 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2021-11-19 14:23:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 17703 states and 24398 transitions. [2021-11-19 14:23:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2021-11-19 14:23:03,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:03,874 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:23:03,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:04,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:04,081 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:23:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:04,082 INFO L85 PathProgramCache]: Analyzing trace with hash -889229135, now seen corresponding path program 1 times [2021-11-19 14:23:04,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:04,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249170190] [2021-11-19 14:23:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:04,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:04,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:04,086 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:04,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-19 14:23:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:09,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 5470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:23:09,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 333 proven. 74 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2021-11-19 14:23:12,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2021-11-19 14:23:14,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:14,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249170190] [2021-11-19 14:23:14,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249170190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:23:14,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1887256499] [2021-11-19 14:23:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:14,498 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:23:14,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:23:14,499 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:23:14,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2021-11-19 14:23:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:26,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 5470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:23:26,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 333 proven. 74 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2021-11-19 14:23:29,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2021-11-19 14:23:30,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1887256499] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:23:30,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305973678] [2021-11-19 14:23:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:30,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:23:30,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:23:30,854 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:23:30,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-19 14:23:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:35,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 5470 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:23:35,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 333 proven. 74 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2021-11-19 14:23:38,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2021-11-19 14:23:41,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305973678] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:23:41,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:23:41,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 13 [2021-11-19 14:23:41,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638881876] [2021-11-19 14:23:41,780 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:23:41,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:23:41,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:41,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:23:41,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:23:41,783 INFO L87 Difference]: Start difference. First operand 17703 states and 24398 transitions. Second operand has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 10 states have call successors, (174), 5 states have call predecessors, (174), 3 states have return successors, (156), 10 states have call predecessors, (156), 10 states have call successors, (156) [2021-11-19 14:23:48,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:48,386 INFO L93 Difference]: Finished difference Result 37501 states and 52267 transitions. [2021-11-19 14:23:48,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:23:48,387 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 10 states have call successors, (174), 5 states have call predecessors, (174), 3 states have return successors, (156), 10 states have call predecessors, (156), 10 states have call successors, (156) Word has length 523 [2021-11-19 14:23:48,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:48,447 INFO L225 Difference]: With dead ends: 37501 [2021-11-19 14:23:48,447 INFO L226 Difference]: Without dead ends: 19815 [2021-11-19 14:23:48,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3139 GetRequests, 3121 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:23:48,493 INFO L933 BasicCegarLoop]: 4041 mSDtfsCounter, 7874 mSDsluCounter, 15952 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 2040 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7888 SdHoareTripleChecker+Valid, 19993 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2040 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:48,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7888 Valid, 19993 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2040 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-19 14:23:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19815 states. [2021-11-19 14:23:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19815 to 19495. [2021-11-19 14:23:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19495 states, 13029 states have (on average 1.306470181901911) internal successors, (17022), 13579 states have internal predecessors, (17022), 5058 states have call successors, (5058), 1437 states have call predecessors, (5058), 1406 states have return successors, (5246), 4936 states have call predecessors, (5246), 5058 states have call successors, (5246) [2021-11-19 14:23:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19495 states to 19495 states and 27326 transitions. [2021-11-19 14:23:50,573 INFO L78 Accepts]: Start accepts. Automaton has 19495 states and 27326 transitions. Word has length 523 [2021-11-19 14:23:50,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:50,573 INFO L470 AbstractCegarLoop]: Abstraction has 19495 states and 27326 transitions. [2021-11-19 14:23:50,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 10 states have call successors, (174), 5 states have call predecessors, (174), 3 states have return successors, (156), 10 states have call predecessors, (156), 10 states have call successors, (156) [2021-11-19 14:23:50,573 INFO L276 IsEmpty]: Start isEmpty. Operand 19495 states and 27326 transitions. [2021-11-19 14:23:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2021-11-19 14:23:50,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:50,585 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 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] [2021-11-19 14:23:50,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-11-19 14:23:50,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2021-11-19 14:23:51,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:51,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:51,186 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:23:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1903686428, now seen corresponding path program 1 times [2021-11-19 14:23:51,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:51,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123428132] [2021-11-19 14:23:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:51,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:51,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:51,193 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:51,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-19 14:23:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:57,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 5564 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-19 14:23:57,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 1197 trivial. 0 not checked. [2021-11-19 14:24:00,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-11-19 14:24:03,722 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:03,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123428132] [2021-11-19 14:24:03,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123428132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:03,723 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:03,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 12] imperfect sequences [] total 30 [2021-11-19 14:24:03,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404212284] [2021-11-19 14:24:03,723 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:03,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-19 14:24:03,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:03,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-19 14:24:03,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2021-11-19 14:24:03,725 INFO L87 Difference]: Start difference. First operand 19495 states and 27326 transitions. Second operand has 30 states, 25 states have (on average 9.76) internal successors, (244), 21 states have internal predecessors, (244), 8 states have call successors, (84), 4 states have call predecessors, (84), 8 states have return successors, (72), 11 states have call predecessors, (72), 6 states have call successors, (72) [2021-11-19 14:24:09,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:09,550 INFO L93 Difference]: Finished difference Result 39391 states and 55778 transitions. [2021-11-19 14:24:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:24:09,551 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 9.76) internal successors, (244), 21 states have internal predecessors, (244), 8 states have call successors, (84), 4 states have call predecessors, (84), 8 states have return successors, (72), 11 states have call predecessors, (72), 6 states have call successors, (72) Word has length 529 [2021-11-19 14:24:09,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:09,774 INFO L225 Difference]: With dead ends: 39391 [2021-11-19 14:24:09,774 INFO L226 Difference]: Without dead ends: 19913 [2021-11-19 14:24:09,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 1029 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2021-11-19 14:24:09,821 INFO L933 BasicCegarLoop]: 3890 mSDtfsCounter, 92 mSDsluCounter, 77670 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 81560 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:09,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 81560 Invalid, 1074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 14:24:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19913 states. [2021-11-19 14:24:11,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19913 to 19537. [2021-11-19 14:24:11,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19537 states, 13062 states have (on average 1.304777216352779) internal successors, (17043), 13597 states have internal predecessors, (17043), 5058 states have call successors, (5058), 1437 states have call predecessors, (5058), 1415 states have return successors, (5264), 4948 states have call predecessors, (5264), 5058 states have call successors, (5264) [2021-11-19 14:24:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19537 states to 19537 states and 27365 transitions. [2021-11-19 14:24:11,864 INFO L78 Accepts]: Start accepts. Automaton has 19537 states and 27365 transitions. Word has length 529 [2021-11-19 14:24:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:11,865 INFO L470 AbstractCegarLoop]: Abstraction has 19537 states and 27365 transitions. [2021-11-19 14:24:11,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 9.76) internal successors, (244), 21 states have internal predecessors, (244), 8 states have call successors, (84), 4 states have call predecessors, (84), 8 states have return successors, (72), 11 states have call predecessors, (72), 6 states have call successors, (72) [2021-11-19 14:24:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 19537 states and 27365 transitions. [2021-11-19 14:24:11,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2021-11-19 14:24:11,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:11,876 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 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] [2021-11-19 14:24:11,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-19 14:24:12,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:12,079 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:24:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:12,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1027610529, now seen corresponding path program 1 times [2021-11-19 14:24:12,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:12,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443342902] [2021-11-19 14:24:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:12,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:12,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:12,085 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:12,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_044e2526-b346-4659-9e55-3382eba0a0e1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-19 14:25:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:25:43,295 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.