./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF --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 53e062e1035ae1f01c2e809595599fa2661e1ae14b245da0f28d018a9f398780 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:31:36,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:31:36,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:31:36,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:31:36,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:31:36,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:31:36,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:31:36,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:31:36,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:31:36,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:31:36,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:31:36,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:31:36,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:31:36,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:31:36,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:31:36,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:31:36,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:31:36,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:31:36,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:31:36,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:31:36,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:31:36,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:31:36,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:31:36,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:31:36,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:31:36,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:31:36,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:31:36,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:31:36,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:31:36,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:31:36,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:31:36,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:31:36,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:31:36,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:31:36,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:31:36,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:31:36,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:31:36,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:31:36,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:31:36,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:31:36,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:31:36,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:31:36,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:31:36,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:31:36,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:31:36,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:31:36,747 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:31:36,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:31:36,748 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:31:36,748 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:31:36,755 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:31:36,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:31:36,757 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:31:36,757 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:31:36,757 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:31:36,758 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:31:36,758 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:31:36,758 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:31:36,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:31:36,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:31:36,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:31:36,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:31:36,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:31:36,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:31:36,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:31:36,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:31:36,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:31:36,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:31:36,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:31:36,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:31:36,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:31:36,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:31:36,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:31:36,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:31:36,766 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:31:36,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:31:36,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:31:36,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:31:36,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:31:36,767 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e062e1035ae1f01c2e809595599fa2661e1ae14b245da0f28d018a9f398780 [2021-11-13 01:31:37,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:31:37,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:31:37,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:31:37,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:31:37,112 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:31:37,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i [2021-11-13 01:31:37,185 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/data/713d9229a/f4293db3519c49eeb6eb805202d213dc/FLAGf1b4c0f76 [2021-11-13 01:31:38,347 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:31:38,348 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i [2021-11-13 01:31:38,412 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/data/713d9229a/f4293db3519c49eeb6eb805202d213dc/FLAGf1b4c0f76 [2021-11-13 01:31:38,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/data/713d9229a/f4293db3519c49eeb6eb805202d213dc [2021-11-13 01:31:38,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:31:38,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:31:38,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:31:38,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:31:38,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:31:38,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:38" (1/1) ... [2021-11-13 01:31:38,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713a0b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:38, skipping insertion in model container [2021-11-13 01:31:38,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:38" (1/1) ... [2021-11-13 01:31:38,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:31:38,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:31:41,481 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:31:41,482 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:31:41,765 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:31:44,375 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393566,393579] [2021-11-13 01:31:44,379 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393711,393724] [2021-11-13 01:31:44,380 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393857,393870] [2021-11-13 01:31:44,381 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394022,394035] [2021-11-13 01:31:44,381 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394180,394193] [2021-11-13 01:31:44,382 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394338,394351] [2021-11-13 01:31:44,383 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394496,394509] [2021-11-13 01:31:44,383 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394656,394669] [2021-11-13 01:31:44,384 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394815,394828] [2021-11-13 01:31:44,385 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394954,394967] [2021-11-13 01:31:44,385 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395096,395109] [2021-11-13 01:31:44,386 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395245,395258] [2021-11-13 01:31:44,387 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395384,395397] [2021-11-13 01:31:44,387 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395539,395552] [2021-11-13 01:31:44,388 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395699,395712] [2021-11-13 01:31:44,389 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395850,395863] [2021-11-13 01:31:44,389 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396001,396014] [2021-11-13 01:31:44,390 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396153,396166] [2021-11-13 01:31:44,391 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396302,396315] [2021-11-13 01:31:44,391 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396450,396463] [2021-11-13 01:31:44,392 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396607,396620] [2021-11-13 01:31:44,393 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396756,396769] [2021-11-13 01:31:44,393 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396912,396925] [2021-11-13 01:31:44,394 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397065,397078] [2021-11-13 01:31:44,395 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397211,397224] [2021-11-13 01:31:44,395 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397354,397367] [2021-11-13 01:31:44,396 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397506,397519] [2021-11-13 01:31:44,397 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397652,397665] [2021-11-13 01:31:44,397 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397797,397810] [2021-11-13 01:31:44,398 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397951,397964] [2021-11-13 01:31:44,399 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398102,398115] [2021-11-13 01:31:44,399 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398257,398270] [2021-11-13 01:31:44,400 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398409,398422] [2021-11-13 01:31:44,401 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398564,398577] [2021-11-13 01:31:44,401 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398728,398741] [2021-11-13 01:31:44,402 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398884,398897] [2021-11-13 01:31:44,403 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399048,399061] [2021-11-13 01:31:44,403 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399190,399203] [2021-11-13 01:31:44,404 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399348,399361] [2021-11-13 01:31:44,405 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399515,399528] [2021-11-13 01:31:44,405 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399674,399687] [2021-11-13 01:31:44,406 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399833,399846] [2021-11-13 01:31:44,406 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399982,399995] [2021-11-13 01:31:44,407 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400129,400142] [2021-11-13 01:31:44,408 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400268,400281] [2021-11-13 01:31:44,408 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400431,400444] [2021-11-13 01:31:44,409 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400597,400610] [2021-11-13 01:31:44,410 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400761,400774] [2021-11-13 01:31:44,410 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400926,400939] [2021-11-13 01:31:44,411 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401091,401104] [2021-11-13 01:31:44,411 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401257,401270] [2021-11-13 01:31:44,412 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401422,401435] [2021-11-13 01:31:44,413 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401589,401602] [2021-11-13 01:31:44,413 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401749,401762] [2021-11-13 01:31:44,414 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401911,401924] [2021-11-13 01:31:44,414 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402070,402083] [2021-11-13 01:31:44,415 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402216,402229] [2021-11-13 01:31:44,416 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402359,402372] [2021-11-13 01:31:44,416 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402503,402516] [2021-11-13 01:31:44,417 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402646,402659] [2021-11-13 01:31:44,417 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402790,402803] [2021-11-13 01:31:44,418 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402931,402944] [2021-11-13 01:31:44,419 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403069,403082] [2021-11-13 01:31:44,419 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403227,403240] [2021-11-13 01:31:44,420 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403386,403399] [2021-11-13 01:31:44,421 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403542,403555] [2021-11-13 01:31:44,421 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403691,403704] [2021-11-13 01:31:44,422 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403843,403856] [2021-11-13 01:31:44,423 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403994,404007] [2021-11-13 01:31:44,423 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404143,404156] [2021-11-13 01:31:44,424 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404295,404308] [2021-11-13 01:31:44,424 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404443,404456] [2021-11-13 01:31:44,425 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404596,404609] [2021-11-13 01:31:44,426 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404747,404760] [2021-11-13 01:31:44,426 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404897,404910] [2021-11-13 01:31:44,427 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405044,405057] [2021-11-13 01:31:44,428 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405195,405208] [2021-11-13 01:31:44,428 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405346,405359] [2021-11-13 01:31:44,429 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405494,405507] [2021-11-13 01:31:44,430 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405660,405673] [2021-11-13 01:31:44,430 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405829,405842] [2021-11-13 01:31:44,431 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405996,406009] [2021-11-13 01:31:44,432 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406164,406177] [2021-11-13 01:31:44,432 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406314,406327] [2021-11-13 01:31:44,433 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406461,406474] [2021-11-13 01:31:44,433 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406622,406635] [2021-11-13 01:31:44,434 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406792,406805] [2021-11-13 01:31:44,435 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406954,406967] [2021-11-13 01:31:44,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:44,511 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) [2021-11-13 01:31:44,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@625c9686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:44, skipping insertion in model container [2021-11-13 01:31:44,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:31:44,513 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:31:44,515 INFO L158 Benchmark]: Toolchain (without parser) took 5897.05ms. Allocated memory was 90.2MB in the beginning and 184.5MB in the end (delta: 94.4MB). Free memory was 61.6MB in the beginning and 117.2MB in the end (delta: -55.6MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2021-11-13 01:31:44,516 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory is still 68.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:31:44,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5894.24ms. Allocated memory was 90.2MB in the beginning and 184.5MB in the end (delta: 94.4MB). Free memory was 61.4MB in the beginning and 117.2MB in the end (delta: -55.7MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2021-11-13 01:31:44,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory is still 68.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5894.24ms. Allocated memory was 90.2MB in the beginning and 184.5MB in the end (delta: 94.4MB). Free memory was 61.4MB in the beginning and 117.2MB in the end (delta: -55.7MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF --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 53e062e1035ae1f01c2e809595599fa2661e1ae14b245da0f28d018a9f398780 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:31:47,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:31:47,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:31:47,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:31:47,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:31:47,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:31:47,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:31:47,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:31:47,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:31:47,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:31:47,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:31:47,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:31:47,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:31:47,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:31:47,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:31:47,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:31:47,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:31:47,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:31:47,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:31:47,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:31:47,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:31:47,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:31:47,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:31:47,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:31:47,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:31:47,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:31:47,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:31:47,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:31:47,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:31:47,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:31:47,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:31:47,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:31:47,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:31:47,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:31:47,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:31:47,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:31:47,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:31:47,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:31:47,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:31:47,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:31:47,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:31:47,438 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:31:47,490 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:31:47,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:31:47,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:31:47,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:31:47,496 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:31:47,496 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:31:47,497 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:31:47,497 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:31:47,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:31:47,497 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:31:47,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:31:47,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:31:47,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:31:47,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:31:47,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:31:47,502 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:31:47,502 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:31:47,502 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:31:47,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:31:47,503 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:31:47,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:31:47,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:31:47,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:31:47,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:31:47,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:31:47,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:31:47,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:31:47,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:31:47,505 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:31:47,506 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:47,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:31:47,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:31:47,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:31:47,507 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e062e1035ae1f01c2e809595599fa2661e1ae14b245da0f28d018a9f398780 [2021-11-13 01:31:47,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:31:47,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:31:47,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:31:47,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:31:47,988 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:31:47,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i [2021-11-13 01:31:48,073 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/data/87caa74d7/6606774752c147eba09b5cc20fc3f555/FLAG97b4afe1e [2021-11-13 01:31:49,349 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:31:49,351 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i [2021-11-13 01:31:49,456 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/data/87caa74d7/6606774752c147eba09b5cc20fc3f555/FLAG97b4afe1e [2021-11-13 01:31:49,553 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/data/87caa74d7/6606774752c147eba09b5cc20fc3f555 [2021-11-13 01:31:49,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:31:49,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:31:49,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:31:49,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:31:49,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:31:49,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:49" (1/1) ... [2021-11-13 01:31:49,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443f3a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:49, skipping insertion in model container [2021-11-13 01:31:49,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:49" (1/1) ... [2021-11-13 01:31:49,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:31:49,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:31:55,102 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393566,393579] [2021-11-13 01:31:55,106 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393711,393724] [2021-11-13 01:31:55,107 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393857,393870] [2021-11-13 01:31:55,107 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394022,394035] [2021-11-13 01:31:55,108 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394180,394193] [2021-11-13 01:31:55,109 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394338,394351] [2021-11-13 01:31:55,109 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394496,394509] [2021-11-13 01:31:55,110 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394656,394669] [2021-11-13 01:31:55,111 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394815,394828] [2021-11-13 01:31:55,111 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394954,394967] [2021-11-13 01:31:55,112 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395096,395109] [2021-11-13 01:31:55,113 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395245,395258] [2021-11-13 01:31:55,113 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395384,395397] [2021-11-13 01:31:55,114 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395539,395552] [2021-11-13 01:31:55,114 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395699,395712] [2021-11-13 01:31:55,115 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395850,395863] [2021-11-13 01:31:55,116 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396001,396014] [2021-11-13 01:31:55,116 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396153,396166] [2021-11-13 01:31:55,117 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396302,396315] [2021-11-13 01:31:55,118 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396450,396463] [2021-11-13 01:31:55,118 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396607,396620] [2021-11-13 01:31:55,119 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396756,396769] [2021-11-13 01:31:55,120 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396912,396925] [2021-11-13 01:31:55,120 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397065,397078] [2021-11-13 01:31:55,121 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397211,397224] [2021-11-13 01:31:55,122 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397354,397367] [2021-11-13 01:31:55,122 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397506,397519] [2021-11-13 01:31:55,123 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397652,397665] [2021-11-13 01:31:55,124 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397797,397810] [2021-11-13 01:31:55,124 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397951,397964] [2021-11-13 01:31:55,125 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398102,398115] [2021-11-13 01:31:55,126 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398257,398270] [2021-11-13 01:31:55,126 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398409,398422] [2021-11-13 01:31:55,127 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398564,398577] [2021-11-13 01:31:55,128 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398728,398741] [2021-11-13 01:31:55,128 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398884,398897] [2021-11-13 01:31:55,129 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399048,399061] [2021-11-13 01:31:55,129 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399190,399203] [2021-11-13 01:31:55,130 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399348,399361] [2021-11-13 01:31:55,131 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399515,399528] [2021-11-13 01:31:55,131 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399674,399687] [2021-11-13 01:31:55,132 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399833,399846] [2021-11-13 01:31:55,132 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399982,399995] [2021-11-13 01:31:55,134 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400129,400142] [2021-11-13 01:31:55,134 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400268,400281] [2021-11-13 01:31:55,135 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400431,400444] [2021-11-13 01:31:55,136 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400597,400610] [2021-11-13 01:31:55,136 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400761,400774] [2021-11-13 01:31:55,137 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400926,400939] [2021-11-13 01:31:55,137 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401091,401104] [2021-11-13 01:31:55,138 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401257,401270] [2021-11-13 01:31:55,139 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401422,401435] [2021-11-13 01:31:55,139 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401589,401602] [2021-11-13 01:31:55,140 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401749,401762] [2021-11-13 01:31:55,140 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401911,401924] [2021-11-13 01:31:55,141 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402070,402083] [2021-11-13 01:31:55,141 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402216,402229] [2021-11-13 01:31:55,142 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402359,402372] [2021-11-13 01:31:55,143 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402503,402516] [2021-11-13 01:31:55,143 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402646,402659] [2021-11-13 01:31:55,144 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402790,402803] [2021-11-13 01:31:55,144 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402931,402944] [2021-11-13 01:31:55,145 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403069,403082] [2021-11-13 01:31:55,145 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403227,403240] [2021-11-13 01:31:55,146 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403386,403399] [2021-11-13 01:31:55,147 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403542,403555] [2021-11-13 01:31:55,147 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403691,403704] [2021-11-13 01:31:55,148 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403843,403856] [2021-11-13 01:31:55,148 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403994,404007] [2021-11-13 01:31:55,149 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404143,404156] [2021-11-13 01:31:55,149 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404295,404308] [2021-11-13 01:31:55,150 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404443,404456] [2021-11-13 01:31:55,151 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404596,404609] [2021-11-13 01:31:55,151 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404747,404760] [2021-11-13 01:31:55,152 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404897,404910] [2021-11-13 01:31:55,152 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405044,405057] [2021-11-13 01:31:55,153 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405195,405208] [2021-11-13 01:31:55,153 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405346,405359] [2021-11-13 01:31:55,154 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405494,405507] [2021-11-13 01:31:55,154 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405660,405673] [2021-11-13 01:31:55,155 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405829,405842] [2021-11-13 01:31:55,156 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405996,406009] [2021-11-13 01:31:55,156 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406164,406177] [2021-11-13 01:31:55,157 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406314,406327] [2021-11-13 01:31:55,157 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406461,406474] [2021-11-13 01:31:55,158 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406622,406635] [2021-11-13 01:31:55,158 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406792,406805] [2021-11-13 01:31:55,159 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406954,406967] [2021-11-13 01:31:55,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:55,265 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:31:55,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:31:55,933 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393566,393579] [2021-11-13 01:31:55,934 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393711,393724] [2021-11-13 01:31:55,934 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393857,393870] [2021-11-13 01:31:55,935 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394022,394035] [2021-11-13 01:31:55,936 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394180,394193] [2021-11-13 01:31:55,938 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394338,394351] [2021-11-13 01:31:55,938 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394496,394509] [2021-11-13 01:31:55,939 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394656,394669] [2021-11-13 01:31:55,939 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394815,394828] [2021-11-13 01:31:55,940 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394954,394967] [2021-11-13 01:31:55,940 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395096,395109] [2021-11-13 01:31:55,941 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395245,395258] [2021-11-13 01:31:55,943 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395384,395397] [2021-11-13 01:31:55,943 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395539,395552] [2021-11-13 01:31:55,944 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395699,395712] [2021-11-13 01:31:55,945 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395850,395863] [2021-11-13 01:31:55,945 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396001,396014] [2021-11-13 01:31:55,946 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396153,396166] [2021-11-13 01:31:55,946 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396302,396315] [2021-11-13 01:31:55,947 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396450,396463] [2021-11-13 01:31:55,947 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396607,396620] [2021-11-13 01:31:55,948 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396756,396769] [2021-11-13 01:31:55,949 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396912,396925] [2021-11-13 01:31:55,950 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397065,397078] [2021-11-13 01:31:55,951 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397211,397224] [2021-11-13 01:31:55,952 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397354,397367] [2021-11-13 01:31:55,953 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397506,397519] [2021-11-13 01:31:55,954 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397652,397665] [2021-11-13 01:31:55,954 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397797,397810] [2021-11-13 01:31:55,955 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397951,397964] [2021-11-13 01:31:55,957 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398102,398115] [2021-11-13 01:31:55,959 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398257,398270] [2021-11-13 01:31:55,959 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398409,398422] [2021-11-13 01:31:55,960 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398564,398577] [2021-11-13 01:31:55,960 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398728,398741] [2021-11-13 01:31:55,961 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398884,398897] [2021-11-13 01:31:55,961 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399048,399061] [2021-11-13 01:31:55,962 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399190,399203] [2021-11-13 01:31:55,963 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399348,399361] [2021-11-13 01:31:55,964 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399515,399528] [2021-11-13 01:31:55,965 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399674,399687] [2021-11-13 01:31:55,966 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399833,399846] [2021-11-13 01:31:55,967 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399982,399995] [2021-11-13 01:31:55,968 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400129,400142] [2021-11-13 01:31:55,974 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400268,400281] [2021-11-13 01:31:55,974 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400431,400444] [2021-11-13 01:31:55,975 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400597,400610] [2021-11-13 01:31:55,976 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400761,400774] [2021-11-13 01:31:55,977 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400926,400939] [2021-11-13 01:31:55,977 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401091,401104] [2021-11-13 01:31:55,978 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401257,401270] [2021-11-13 01:31:55,978 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401422,401435] [2021-11-13 01:31:55,979 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401589,401602] [2021-11-13 01:31:55,979 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401749,401762] [2021-11-13 01:31:55,980 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401911,401924] [2021-11-13 01:31:55,980 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402070,402083] [2021-11-13 01:31:55,981 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402216,402229] [2021-11-13 01:31:55,982 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402359,402372] [2021-11-13 01:31:55,983 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402503,402516] [2021-11-13 01:31:55,984 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402646,402659] [2021-11-13 01:31:55,988 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402790,402803] [2021-11-13 01:31:55,988 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402931,402944] [2021-11-13 01:31:55,989 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403069,403082] [2021-11-13 01:31:55,989 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403227,403240] [2021-11-13 01:31:55,990 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403386,403399] [2021-11-13 01:31:55,992 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403542,403555] [2021-11-13 01:31:55,992 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403691,403704] [2021-11-13 01:31:55,993 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403843,403856] [2021-11-13 01:31:55,993 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403994,404007] [2021-11-13 01:31:56,002 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404143,404156] [2021-11-13 01:31:56,003 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404295,404308] [2021-11-13 01:31:56,003 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404443,404456] [2021-11-13 01:31:56,004 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404596,404609] [2021-11-13 01:31:56,004 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404747,404760] [2021-11-13 01:31:56,005 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404897,404910] [2021-11-13 01:31:56,005 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405044,405057] [2021-11-13 01:31:56,006 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405195,405208] [2021-11-13 01:31:56,006 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405346,405359] [2021-11-13 01:31:56,008 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405494,405507] [2021-11-13 01:31:56,009 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405660,405673] [2021-11-13 01:31:56,010 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405829,405842] [2021-11-13 01:31:56,011 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405996,406009] [2021-11-13 01:31:56,011 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406164,406177] [2021-11-13 01:31:56,012 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406314,406327] [2021-11-13 01:31:56,012 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406461,406474] [2021-11-13 01:31:56,013 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406622,406635] [2021-11-13 01:31:56,013 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406792,406805] [2021-11-13 01:31:56,014 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406954,406967] [2021-11-13 01:31:56,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:56,073 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:31:56,645 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393566,393579] [2021-11-13 01:31:56,646 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393711,393724] [2021-11-13 01:31:56,647 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[393857,393870] [2021-11-13 01:31:56,648 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394022,394035] [2021-11-13 01:31:56,649 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394180,394193] [2021-11-13 01:31:56,649 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394338,394351] [2021-11-13 01:31:56,650 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394496,394509] [2021-11-13 01:31:56,650 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394656,394669] [2021-11-13 01:31:56,651 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394815,394828] [2021-11-13 01:31:56,651 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[394954,394967] [2021-11-13 01:31:56,652 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395096,395109] [2021-11-13 01:31:56,652 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395245,395258] [2021-11-13 01:31:56,653 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395384,395397] [2021-11-13 01:31:56,653 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395539,395552] [2021-11-13 01:31:56,654 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395699,395712] [2021-11-13 01:31:56,654 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[395850,395863] [2021-11-13 01:31:56,655 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396001,396014] [2021-11-13 01:31:56,655 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396153,396166] [2021-11-13 01:31:56,656 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396302,396315] [2021-11-13 01:31:56,656 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396450,396463] [2021-11-13 01:31:56,657 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396607,396620] [2021-11-13 01:31:56,657 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396756,396769] [2021-11-13 01:31:56,658 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[396912,396925] [2021-11-13 01:31:56,658 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397065,397078] [2021-11-13 01:31:56,659 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397211,397224] [2021-11-13 01:31:56,659 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397354,397367] [2021-11-13 01:31:56,662 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397506,397519] [2021-11-13 01:31:56,662 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397652,397665] [2021-11-13 01:31:56,663 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397797,397810] [2021-11-13 01:31:56,663 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[397951,397964] [2021-11-13 01:31:56,664 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398102,398115] [2021-11-13 01:31:56,664 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398257,398270] [2021-11-13 01:31:56,665 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398409,398422] [2021-11-13 01:31:56,665 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398564,398577] [2021-11-13 01:31:56,666 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398728,398741] [2021-11-13 01:31:56,666 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[398884,398897] [2021-11-13 01:31:56,667 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399048,399061] [2021-11-13 01:31:56,667 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399190,399203] [2021-11-13 01:31:56,668 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399348,399361] [2021-11-13 01:31:56,668 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399515,399528] [2021-11-13 01:31:56,670 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399674,399687] [2021-11-13 01:31:56,670 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399833,399846] [2021-11-13 01:31:56,671 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[399982,399995] [2021-11-13 01:31:56,673 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400129,400142] [2021-11-13 01:31:56,674 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400268,400281] [2021-11-13 01:31:56,674 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400431,400444] [2021-11-13 01:31:56,675 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400597,400610] [2021-11-13 01:31:56,675 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400761,400774] [2021-11-13 01:31:56,676 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[400926,400939] [2021-11-13 01:31:56,676 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401091,401104] [2021-11-13 01:31:56,677 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401257,401270] [2021-11-13 01:31:56,678 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401422,401435] [2021-11-13 01:31:56,678 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401589,401602] [2021-11-13 01:31:56,679 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401749,401762] [2021-11-13 01:31:56,679 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[401911,401924] [2021-11-13 01:31:56,680 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402070,402083] [2021-11-13 01:31:56,680 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402216,402229] [2021-11-13 01:31:56,681 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402359,402372] [2021-11-13 01:31:56,681 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402503,402516] [2021-11-13 01:31:56,682 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402646,402659] [2021-11-13 01:31:56,682 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402790,402803] [2021-11-13 01:31:56,683 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[402931,402944] [2021-11-13 01:31:56,683 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403069,403082] [2021-11-13 01:31:56,684 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403227,403240] [2021-11-13 01:31:56,684 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403386,403399] [2021-11-13 01:31:56,684 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403542,403555] [2021-11-13 01:31:56,685 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403691,403704] [2021-11-13 01:31:56,686 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403843,403856] [2021-11-13 01:31:56,686 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[403994,404007] [2021-11-13 01:31:56,687 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404143,404156] [2021-11-13 01:31:56,690 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404295,404308] [2021-11-13 01:31:56,690 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404443,404456] [2021-11-13 01:31:56,691 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404596,404609] [2021-11-13 01:31:56,691 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404747,404760] [2021-11-13 01:31:56,692 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[404897,404910] [2021-11-13 01:31:56,693 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405044,405057] [2021-11-13 01:31:56,693 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405195,405208] [2021-11-13 01:31:56,694 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405346,405359] [2021-11-13 01:31:56,694 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405494,405507] [2021-11-13 01:31:56,696 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405660,405673] [2021-11-13 01:31:56,701 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405829,405842] [2021-11-13 01:31:56,701 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[405996,406009] [2021-11-13 01:31:56,702 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406164,406177] [2021-11-13 01:31:56,702 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406314,406327] [2021-11-13 01:31:56,703 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406461,406474] [2021-11-13 01:31:56,703 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406622,406635] [2021-11-13 01:31:56,704 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406792,406805] [2021-11-13 01:31:56,704 WARN L228 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_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i[406954,406967] [2021-11-13 01:31:56,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:57,100 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:31:57,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57 WrapperNode [2021-11-13 01:31:57,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:31:57,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:31:57,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:31:57,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:31:57,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2021-11-13 01:31:57,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2021-11-13 01:31:57,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:31:57,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:31:57,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:31:57,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:31:57,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2021-11-13 01:31:57,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2021-11-13 01:31:57,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2021-11-13 01:31:57,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2021-11-13 01:31:57,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2021-11-13 01:31:57,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2021-11-13 01:31:57,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2021-11-13 01:31:57,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:31:57,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:31:57,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:31:57,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:31:57,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2021-11-13 01:31:57,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:31:57,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:31:57,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:31:57,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:31:58,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-13 01:31:58,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-13 01:31:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-13 01:31:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-13 01:31:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 01:31:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 01:31:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 01:31:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 01:31:58,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 01:31:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 01:31:58,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mii_mutex_of_ipg_nic_private [2021-11-13 01:31:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mii_mutex_of_ipg_nic_private [2021-11-13 01:31:58,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-13 01:31:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-13 01:31:58,031 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 01:31:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 01:31:58,031 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-11-13 01:31:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-11-13 01:31:58,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-13 01:31:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-13 01:31:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 01:31:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 01:31:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-13 01:31:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-13 01:31:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-11-13 01:31:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-11-13 01:31:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-13 01:31:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-13 01:31:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-13 01:31:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-13 01:31:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-13 01:31:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-13 01:31:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 01:31:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 01:31:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-13 01:31:58,035 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-13 01:31:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-11-13 01:31:58,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-11-13 01:31:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-13 01:31:58,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-13 01:31:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-13 01:31:58,036 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-13 01:31:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 01:31:58,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 01:31:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 01:31:58,036 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 01:31:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-13 01:31:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-13 01:31:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 01:31:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 01:31:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 01:31:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 01:31:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-13 01:31:58,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-13 01:31:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 01:31:58,039 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 01:31:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:31:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 01:31:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:31:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:31:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:31:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-11-13 01:31:58,040 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-11-13 01:31:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-13 01:31:58,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-13 01:31:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_remove [2021-11-13 01:31:58,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_remove [2021-11-13 01:31:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 01:31:58,041 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 01:31:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 01:31:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 01:31:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-11-13 01:31:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-11-13 01:31:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-13 01:31:58,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-13 01:31:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 01:31:58,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 01:31:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-13 01:31:58,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-13 01:31:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-13 01:31:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-13 01:31:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 01:31:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 01:31:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 01:31:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 01:31:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-13 01:31:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-13 01:31:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-13 01:31:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-13 01:31:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-13 01:31:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-13 01:31:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 01:31:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 01:31:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-13 01:31:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-13 01:31:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 01:31:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 01:31:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-13 01:31:58,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-13 01:31:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 01:31:58,047 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 01:31:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-13 01:31:58,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-13 01:31:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-11-13 01:31:58,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-11-13 01:31:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-11-13 01:31:58,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-11-13 01:31:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:31:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_lock_of_ipg_nic_private [2021-11-13 01:31:58,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_lock_of_ipg_nic_private [2021-11-13 01:31:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 01:31:58,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 01:31:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 01:31:58,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 01:31:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:31:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 01:31:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 01:31:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-13 01:31:58,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-13 01:31:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:31:58,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:31:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 01:31:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-11-13 01:31:58,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-11-13 01:31:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-13 01:31:58,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-13 01:31:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 01:31:58,056 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 01:31:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 01:31:58,056 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 01:31:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-13 01:31:58,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-13 01:31:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-13 01:31:58,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-13 01:31:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-11-13 01:31:58,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-11-13 01:31:58,058 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-11-13 01:31:58,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-11-13 01:31:58,058 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-13 01:31:58,058 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-13 01:31:58,058 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 01:31:58,058 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 01:31:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 01:31:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-11-13 01:31:58,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-11-13 01:31:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-13 01:31:58,059 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-13 01:31:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:31:58,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:31:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-11-13 01:31:58,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-11-13 01:31:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:31:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:31:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:31:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 01:31:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 01:31:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:31:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 01:31:58,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 01:31:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-11-13 01:31:58,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-11-13 01:31:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-13 01:31:58,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-13 01:31:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-13 01:31:58,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-13 01:31:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 01:31:58,062 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 01:31:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 01:31:58,063 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 01:31:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-13 01:31:58,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-13 01:31:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-11-13 01:31:58,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-11-13 01:31:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-13 01:31:58,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-13 01:31:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-11-13 01:31:58,064 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-11-13 01:31:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:31:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-13 01:31:58,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-13 01:31:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 01:31:58,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 01:31:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:31:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-11-13 01:31:58,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-11-13 01:31:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:31:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-11-13 01:31:58,066 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-11-13 01:31:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:31:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 01:31:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:31:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:31:58,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-13 01:31:58,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-13 01:31:58,067 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 01:31:58,067 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 01:31:58,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 01:31:58,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 01:31:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-13 01:31:58,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-13 01:31:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-13 01:31:58,068 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-13 01:31:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-11-13 01:31:58,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-11-13 01:31:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-11-13 01:31:58,069 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-11-13 01:31:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-13 01:31:58,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-13 01:31:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-13 01:31:58,069 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-13 01:31:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-13 01:31:58,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-13 01:31:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-13 01:31:58,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-13 01:31:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 01:31:58,070 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 01:31:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 01:31:58,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 01:31:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 01:31:58,071 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 01:31:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-13 01:31:58,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-13 01:31:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-13 01:31:58,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-13 01:31:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-13 01:31:58,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-13 01:31:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 01:31:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 01:31:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 01:31:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:31:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-13 01:31:58,073 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-13 01:31:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 01:31:58,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 01:31:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nway_reset [2021-11-13 01:31:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nway_reset [2021-11-13 01:31:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-13 01:31:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-13 01:31:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-11-13 01:31:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-11-13 01:31:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-11-13 01:31:58,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-11-13 01:31:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 01:31:58,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 01:31:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-11-13 01:31:58,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-11-13 01:31:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_ipg_nic_private [2021-11-13 01:31:58,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_ipg_nic_private [2021-11-13 01:31:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mii_mutex_of_ipg_nic_private [2021-11-13 01:31:58,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mii_mutex_of_ipg_nic_private [2021-11-13 01:31:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-13 01:31:58,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-13 01:31:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 01:31:58,077 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 01:31:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-13 01:31:58,077 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-13 01:31:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-13 01:31:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-11-13 01:31:58,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-11-13 01:32:11,141 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 01:32:45,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:32:45,051 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 01:32:45,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:32:45 BoogieIcfgContainer [2021-11-13 01:32:45,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:32:45,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:32:45,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:32:45,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:32:45,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:31:49" (1/3) ... [2021-11-13 01:32:45,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7c8eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:32:45, skipping insertion in model container [2021-11-13 01:32:45,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (2/3) ... [2021-11-13 01:32:45,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7c8eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:32:45, skipping insertion in model container [2021-11-13 01:32:45,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:32:45" (3/3) ... [2021-11-13 01:32:45,068 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--net--ethernet--icplus--ipg.ko.cil.i [2021-11-13 01:32:45,075 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:32:45,075 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-13 01:32:45,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:32:45,157 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 [2021-11-13 01:32:45,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-13 01:32:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 1734 states, 1136 states have (on average 1.25) internal successors, (1420), 1205 states have internal predecessors, (1420), 457 states have call successors, (457), 114 states have call predecessors, (457), 113 states have return successors, (453), 450 states have call predecessors, (453), 453 states have call successors, (453) [2021-11-13 01:32:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 01:32:45,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:45,233 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:32:45,234 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:32:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash -93121304, now seen corresponding path program 1 times [2021-11-13 01:32:45,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:45,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888685540] [2021-11-13 01:32:45,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:45,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:45,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:45,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:45,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:32:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:47,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:47,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:48,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:48,786 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:48,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888685540] [2021-11-13 01:32:48,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888685540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:48,787 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:48,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:32:48,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343793419] [2021-11-13 01:32:48,790 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:48,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:48,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:48,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:32:48,839 INFO L87 Difference]: Start difference. First operand has 1734 states, 1136 states have (on average 1.25) internal successors, (1420), 1205 states have internal predecessors, (1420), 457 states have call successors, (457), 114 states have call predecessors, (457), 113 states have return successors, (453), 450 states have call predecessors, (453), 453 states have call successors, (453) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 01:32:49,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:49,375 INFO L93 Difference]: Finished difference Result 3429 states and 4724 transitions. [2021-11-13 01:32:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:32:49,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 64 [2021-11-13 01:32:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:49,434 INFO L225 Difference]: With dead ends: 3429 [2021-11-13 01:32:49,434 INFO L226 Difference]: Without dead ends: 1710 [2021-11-13 01:32:49,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:32:49,460 INFO L933 BasicCegarLoop]: 2278 mSDtfsCounter, 2234 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 4554 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.84ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:49,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2236 Valid, 4554 Invalid, 2 Unknown, 0 Unchecked, 65.79ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 15.84ms Time] [2021-11-13 01:32:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2021-11-13 01:32:49,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1710. [2021-11-13 01:32:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1119 states have (on average 1.2189454870420018) internal successors, (1364), 1184 states have internal predecessors, (1364), 451 states have call successors, (451), 113 states have call predecessors, (451), 112 states have return successors, (449), 446 states have call predecessors, (449), 449 states have call successors, (449) [2021-11-13 01:32:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2264 transitions. [2021-11-13 01:32:49,764 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2264 transitions. Word has length 64 [2021-11-13 01:32:49,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:49,767 INFO L470 AbstractCegarLoop]: Abstraction has 1710 states and 2264 transitions. [2021-11-13 01:32:49,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 01:32:49,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2264 transitions. [2021-11-13 01:32:49,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 01:32:49,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:49,781 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:32:49,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:49,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:49,996 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:32:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1410622876, now seen corresponding path program 1 times [2021-11-13 01:32:50,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:50,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353554944] [2021-11-13 01:32:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:50,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:50,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:50,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:50,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:32:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:51,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:51,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:52,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:53,111 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:53,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353554944] [2021-11-13 01:32:53,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353554944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:53,112 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:53,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:32:53,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496380659] [2021-11-13 01:32:53,112 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:53,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:53,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:53,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:53,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:32:53,115 INFO L87 Difference]: Start difference. First operand 1710 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:32:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:53,300 INFO L93 Difference]: Finished difference Result 1710 states and 2264 transitions. [2021-11-13 01:32:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:32:53,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 70 [2021-11-13 01:32:53,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:53,317 INFO L225 Difference]: With dead ends: 1710 [2021-11-13 01:32:53,317 INFO L226 Difference]: Without dead ends: 1708 [2021-11-13 01:32:53,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:32:53,320 INFO L933 BasicCegarLoop]: 2260 mSDtfsCounter, 2210 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.11ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:53,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2212 Valid, 4518 Invalid, 2 Unknown, 0 Unchecked, 18.34ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 11.11ms Time] [2021-11-13 01:32:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-11-13 01:32:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1708. [2021-11-13 01:32:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1118 states have (on average 1.2182468694096602) internal successors, (1362), 1182 states have internal predecessors, (1362), 451 states have call successors, (451), 113 states have call predecessors, (451), 112 states have return successors, (449), 446 states have call predecessors, (449), 449 states have call successors, (449) [2021-11-13 01:32:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2262 transitions. [2021-11-13 01:32:53,459 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2262 transitions. Word has length 70 [2021-11-13 01:32:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:53,460 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 2262 transitions. [2021-11-13 01:32:53,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:32:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2262 transitions. [2021-11-13 01:32:53,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 01:32:53,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:53,463 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:32:53,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:53,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:53,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:32:53,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1407941109, now seen corresponding path program 1 times [2021-11-13 01:32:53,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:53,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678438273] [2021-11-13 01:32:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:53,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:53,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:53,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:53,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:32:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:55,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:55,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:56,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:56,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:56,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678438273] [2021-11-13 01:32:56,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678438273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:56,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:56,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:32:56,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459288106] [2021-11-13 01:32:56,648 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:56,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:56,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:32:56,650 INFO L87 Difference]: Start difference. First operand 1708 states and 2262 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-13 01:32:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:56,910 INFO L93 Difference]: Finished difference Result 1708 states and 2262 transitions. [2021-11-13 01:32:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:32:56,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 76 [2021-11-13 01:32:56,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:56,927 INFO L225 Difference]: With dead ends: 1708 [2021-11-13 01:32:56,928 INFO L226 Difference]: Without dead ends: 1706 [2021-11-13 01:32:56,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:32:56,930 INFO L933 BasicCegarLoop]: 2258 mSDtfsCounter, 2202 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 4514 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.43ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:56,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2204 Valid, 4514 Invalid, 2 Unknown, 0 Unchecked, 17.08ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 13.43ms Time] [2021-11-13 01:32:56,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-13 01:32:57,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1706. [2021-11-13 01:32:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1117 states have (on average 1.2175470008952551) internal successors, (1360), 1180 states have internal predecessors, (1360), 451 states have call successors, (451), 113 states have call predecessors, (451), 112 states have return successors, (449), 446 states have call predecessors, (449), 449 states have call successors, (449) [2021-11-13 01:32:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2260 transitions. [2021-11-13 01:32:57,072 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2260 transitions. Word has length 76 [2021-11-13 01:32:57,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:57,073 INFO L470 AbstractCegarLoop]: Abstraction has 1706 states and 2260 transitions. [2021-11-13 01:32:57,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-13 01:32:57,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2260 transitions. [2021-11-13 01:32:57,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:32:57,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:57,076 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:32:57,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:57,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:57,299 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:32:57,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:57,299 INFO L85 PathProgramCache]: Analyzing trace with hash -965126579, now seen corresponding path program 1 times [2021-11-13 01:32:57,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:57,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557556644] [2021-11-13 01:32:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:57,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:57,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:57,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:57,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:32:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:58,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:58,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:59,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:00,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:00,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557556644] [2021-11-13 01:33:00,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557556644] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:00,602 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:00,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:00,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502841232] [2021-11-13 01:33:00,603 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:00,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:00,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:00,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:00,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:00,604 INFO L87 Difference]: Start difference. First operand 1706 states and 2260 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 01:33:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:00,842 INFO L93 Difference]: Finished difference Result 1706 states and 2260 transitions. [2021-11-13 01:33:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:00,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 82 [2021-11-13 01:33:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:00,860 INFO L225 Difference]: With dead ends: 1706 [2021-11-13 01:33:00,860 INFO L226 Difference]: Without dead ends: 1704 [2021-11-13 01:33:00,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:00,863 INFO L933 BasicCegarLoop]: 2256 mSDtfsCounter, 2191 mSDsluCounter, 4508 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 6764 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.43ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:00,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2193 Valid, 6764 Invalid, 2 Unknown, 0 Unchecked, 24.42ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 11.43ms Time] [2021-11-13 01:33:00,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-11-13 01:33:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1704. [2021-11-13 01:33:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1116 states have (on average 1.2168458781362008) internal successors, (1358), 1178 states have internal predecessors, (1358), 451 states have call successors, (451), 113 states have call predecessors, (451), 112 states have return successors, (449), 446 states have call predecessors, (449), 449 states have call successors, (449) [2021-11-13 01:33:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2258 transitions. [2021-11-13 01:33:01,009 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2258 transitions. Word has length 82 [2021-11-13 01:33:01,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:01,010 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 2258 transitions. [2021-11-13 01:33:01,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 01:33:01,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2258 transitions. [2021-11-13 01:33:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-13 01:33:01,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:01,013 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:01,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:01,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:01,226 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1385388700, now seen corresponding path program 1 times [2021-11-13 01:33:01,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:01,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094376483] [2021-11-13 01:33:01,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:01,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:01,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:01,233 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:01,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:33:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:02,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:02,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:03,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:04,540 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:04,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094376483] [2021-11-13 01:33:04,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094376483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:04,540 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:04,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:04,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921373650] [2021-11-13 01:33:04,541 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:04,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:04,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:04,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:04,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:04,542 INFO L87 Difference]: Start difference. First operand 1704 states and 2258 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 01:33:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:04,766 INFO L93 Difference]: Finished difference Result 1704 states and 2258 transitions. [2021-11-13 01:33:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:04,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 88 [2021-11-13 01:33:04,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:04,784 INFO L225 Difference]: With dead ends: 1704 [2021-11-13 01:33:04,784 INFO L226 Difference]: Without dead ends: 1702 [2021-11-13 01:33:04,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:04,787 INFO L933 BasicCegarLoop]: 2254 mSDtfsCounter, 2183 mSDsluCounter, 4504 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 6758 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.95ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:04,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 6758 Invalid, 2 Unknown, 0 Unchecked, 22.98ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 12.95ms Time] [2021-11-13 01:33:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2021-11-13 01:33:04,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2021-11-13 01:33:04,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1115 states have (on average 1.2161434977578476) internal successors, (1356), 1176 states have internal predecessors, (1356), 451 states have call successors, (451), 113 states have call predecessors, (451), 112 states have return successors, (449), 446 states have call predecessors, (449), 449 states have call successors, (449) [2021-11-13 01:33:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2256 transitions. [2021-11-13 01:33:04,932 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2256 transitions. Word has length 88 [2021-11-13 01:33:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:04,933 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 2256 transitions. [2021-11-13 01:33:04,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 01:33:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2256 transitions. [2021-11-13 01:33:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-13 01:33:04,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:04,936 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:33:04,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:05,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:05,151 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:05,151 INFO L85 PathProgramCache]: Analyzing trace with hash 737073353, now seen corresponding path program 1 times [2021-11-13 01:33:05,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:05,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482368727] [2021-11-13 01:33:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:05,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:05,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:05,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:05,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:33:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:06,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 01:33:06,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 01:33:07,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-13 01:33:09,266 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:09,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482368727] [2021-11-13 01:33:09,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482368727] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:33:09,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1611247514] [2021-11-13 01:33:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:09,267 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:09,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:33:09,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:33:09,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-13 01:33:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:10,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:33:10,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 01:33:10,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 01:33:11,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1611247514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:11,394 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:33:11,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 11 [2021-11-13 01:33:11,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746420759] [2021-11-13 01:33:11,395 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:11,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:33:11,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:11,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:33:11,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:33:11,397 INFO L87 Difference]: Start difference. First operand 1702 states and 2256 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 01:33:11,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:11,996 INFO L93 Difference]: Finished difference Result 4508 states and 5990 transitions. [2021-11-13 01:33:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:11,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 111 [2021-11-13 01:33:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:12,032 INFO L225 Difference]: With dead ends: 4508 [2021-11-13 01:33:12,032 INFO L226 Difference]: Without dead ends: 2827 [2021-11-13 01:33:12,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:33:12,048 INFO L933 BasicCegarLoop]: 3234 mSDtfsCounter, 2239 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 6245 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.71ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 278.64ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:12,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2239 Valid, 6245 Invalid, 10 Unknown, 0 Unchecked, 24.71ms Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 278.64ms Time] [2021-11-13 01:33:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2021-11-13 01:33:12,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2811. [2021-11-13 01:33:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 1856 states have (on average 1.2219827586206897) internal successors, (2268), 1943 states have internal predecessors, (2268), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3752 transitions. [2021-11-13 01:33:12,325 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3752 transitions. Word has length 111 [2021-11-13 01:33:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:12,326 INFO L470 AbstractCegarLoop]: Abstraction has 2811 states and 3752 transitions. [2021-11-13 01:33:12,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 01:33:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3752 transitions. [2021-11-13 01:33:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:33:12,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:12,328 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:12,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:12,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:12,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:12,743 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash -357471744, now seen corresponding path program 1 times [2021-11-13 01:33:12,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:12,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332784081] [2021-11-13 01:33:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:12,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:12,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:12,746 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:12,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:33:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:14,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:14,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:15,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:15,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:15,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332784081] [2021-11-13 01:33:15,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332784081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:15,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:15,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:15,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075041927] [2021-11-13 01:33:15,933 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:15,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:15,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:15,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:15,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:15,935 INFO L87 Difference]: Start difference. First operand 2811 states and 3752 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 01:33:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:16,239 INFO L93 Difference]: Finished difference Result 2811 states and 3752 transitions. [2021-11-13 01:33:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 94 [2021-11-13 01:33:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:16,266 INFO L225 Difference]: With dead ends: 2811 [2021-11-13 01:33:16,266 INFO L226 Difference]: Without dead ends: 2809 [2021-11-13 01:33:16,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:16,270 INFO L933 BasicCegarLoop]: 2252 mSDtfsCounter, 2175 mSDsluCounter, 4500 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 6752 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:16,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2177 Valid, 6752 Invalid, 2 Unknown, 0 Unchecked, 22.13ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 13.51ms Time] [2021-11-13 01:33:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2021-11-13 01:33:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2809. [2021-11-13 01:33:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 1855 states have (on average 1.2215633423180594) internal successors, (2266), 1941 states have internal predecessors, (2266), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3750 transitions. [2021-11-13 01:33:16,559 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3750 transitions. Word has length 94 [2021-11-13 01:33:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:16,560 INFO L470 AbstractCegarLoop]: Abstraction has 2809 states and 3750 transitions. [2021-11-13 01:33:16,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 01:33:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3750 transitions. [2021-11-13 01:33:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-13 01:33:16,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:16,566 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2021-11-13 01:33:16,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:16,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:16,791 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:16,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:16,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1756813720, now seen corresponding path program 1 times [2021-11-13 01:33:16,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:16,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146650216] [2021-11-13 01:33:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:16,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:16,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:16,794 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:16,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:33:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:18,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 01:33:18,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-13 01:33:19,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-13 01:33:20,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:20,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146650216] [2021-11-13 01:33:20,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146650216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:33:20,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1445515972] [2021-11-13 01:33:20,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:20,681 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:20,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:33:20,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:33:20,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-13 01:33:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:21,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:33:21,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 01:33:22,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-13 01:33:23,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1445515972] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:23,066 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:33:23,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 11 [2021-11-13 01:33:23,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822030619] [2021-11-13 01:33:23,067 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:23,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:33:23,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:23,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:33:23,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:33:23,069 INFO L87 Difference]: Start difference. First operand 2809 states and 3750 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-13 01:33:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:23,547 INFO L93 Difference]: Finished difference Result 5593 states and 7465 transitions. [2021-11-13 01:33:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:33:23,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2021-11-13 01:33:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:23,580 INFO L225 Difference]: With dead ends: 5593 [2021-11-13 01:33:23,581 INFO L226 Difference]: Without dead ends: 2805 [2021-11-13 01:33:23,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:33:23,598 INFO L933 BasicCegarLoop]: 2248 mSDtfsCounter, 2233 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.43ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.96ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:23,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2233 Valid, 2248 Invalid, 3 Unknown, 0 Unchecked, 8.43ms Time], IncrementalHoareTripleChecker [2 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 218.96ms Time] [2021-11-13 01:33:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2021-11-13 01:33:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2805. [2021-11-13 01:33:23,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 1852 states have (on average 1.220842332613391) internal successors, (2261), 1937 states have internal predecessors, (2261), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3745 transitions. [2021-11-13 01:33:23,893 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3745 transitions. Word has length 117 [2021-11-13 01:33:23,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:23,894 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3745 transitions. [2021-11-13 01:33:23,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-13 01:33:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3745 transitions. [2021-11-13 01:33:23,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 01:33:23,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:23,901 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:23,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:24,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:24,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:24,327 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:24,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash -963167324, now seen corresponding path program 1 times [2021-11-13 01:33:24,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:24,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457557225] [2021-11-13 01:33:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:24,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:24,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:24,331 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:24,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:33:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:25,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:25,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:27,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:27,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:27,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457557225] [2021-11-13 01:33:27,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457557225] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:27,610 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:27,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:27,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771416953] [2021-11-13 01:33:27,611 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:27,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:27,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:27,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:27,612 INFO L87 Difference]: Start difference. First operand 2805 states and 3745 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-13 01:33:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:27,907 INFO L93 Difference]: Finished difference Result 2805 states and 3745 transitions. [2021-11-13 01:33:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:27,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 100 [2021-11-13 01:33:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:27,934 INFO L225 Difference]: With dead ends: 2805 [2021-11-13 01:33:27,934 INFO L226 Difference]: Without dead ends: 2803 [2021-11-13 01:33:27,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:27,940 INFO L933 BasicCegarLoop]: 2245 mSDtfsCounter, 2162 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.35ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:27,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 6731 Invalid, 2 Unknown, 0 Unchecked, 23.44ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 10.35ms Time] [2021-11-13 01:33:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2021-11-13 01:33:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2803. [2021-11-13 01:33:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 1851 states have (on average 1.220421393841167) internal successors, (2259), 1935 states have internal predecessors, (2259), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:28,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3743 transitions. [2021-11-13 01:33:28,215 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3743 transitions. Word has length 100 [2021-11-13 01:33:28,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:28,216 INFO L470 AbstractCegarLoop]: Abstraction has 2803 states and 3743 transitions. [2021-11-13 01:33:28,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-13 01:33:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3743 transitions. [2021-11-13 01:33:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-13 01:33:28,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:28,221 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:28,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:28,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:28,446 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:28,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:28,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2047644445, now seen corresponding path program 1 times [2021-11-13 01:33:28,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:28,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610398872] [2021-11-13 01:33:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:28,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:28,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:28,453 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:28,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:33:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:29,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:29,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:31,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:31,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:31,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610398872] [2021-11-13 01:33:31,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610398872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:31,863 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:31,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:31,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333369717] [2021-11-13 01:33:31,864 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:31,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:31,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:31,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:31,866 INFO L87 Difference]: Start difference. First operand 2803 states and 3743 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 01:33:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:32,180 INFO L93 Difference]: Finished difference Result 2803 states and 3743 transitions. [2021-11-13 01:33:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:32,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 106 [2021-11-13 01:33:32,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:32,208 INFO L225 Difference]: With dead ends: 2803 [2021-11-13 01:33:32,208 INFO L226 Difference]: Without dead ends: 2801 [2021-11-13 01:33:32,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:32,211 INFO L933 BasicCegarLoop]: 2243 mSDtfsCounter, 2165 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.14ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:32,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2167 Valid, 4480 Invalid, 2 Unknown, 0 Unchecked, 16.74ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 13.14ms Time] [2021-11-13 01:33:32,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2021-11-13 01:33:32,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2801. [2021-11-13 01:33:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 1850 states have (on average 1.22) internal successors, (2257), 1933 states have internal predecessors, (2257), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3741 transitions. [2021-11-13 01:33:32,547 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3741 transitions. Word has length 106 [2021-11-13 01:33:32,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:32,548 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3741 transitions. [2021-11-13 01:33:32,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 01:33:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3741 transitions. [2021-11-13 01:33:32,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-13 01:33:32,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:32,551 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:32,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:32,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:32,774 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:32,775 INFO L85 PathProgramCache]: Analyzing trace with hash -691128538, now seen corresponding path program 1 times [2021-11-13 01:33:32,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:32,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871306103] [2021-11-13 01:33:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:32,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:32,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:32,778 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:32,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:33:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:34,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:34,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:35,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:36,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:36,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871306103] [2021-11-13 01:33:36,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871306103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:36,272 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:36,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:36,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156300700] [2021-11-13 01:33:36,273 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:36,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:36,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:36,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:36,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:36,275 INFO L87 Difference]: Start difference. First operand 2801 states and 3741 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 01:33:36,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:36,630 INFO L93 Difference]: Finished difference Result 2801 states and 3741 transitions. [2021-11-13 01:33:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:36,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 108 [2021-11-13 01:33:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:36,658 INFO L225 Difference]: With dead ends: 2801 [2021-11-13 01:33:36,658 INFO L226 Difference]: Without dead ends: 2799 [2021-11-13 01:33:36,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:36,662 INFO L933 BasicCegarLoop]: 2241 mSDtfsCounter, 2150 mSDsluCounter, 4478 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 6719 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.45ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:36,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 6719 Invalid, 2 Unknown, 0 Unchecked, 24.80ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 10.45ms Time] [2021-11-13 01:33:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2021-11-13 01:33:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2799. [2021-11-13 01:33:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 1849 states have (on average 1.2195781503515413) internal successors, (2255), 1931 states have internal predecessors, (2255), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3739 transitions. [2021-11-13 01:33:36,994 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3739 transitions. Word has length 108 [2021-11-13 01:33:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:36,997 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 3739 transitions. [2021-11-13 01:33:36,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 01:33:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3739 transitions. [2021-11-13 01:33:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-13 01:33:37,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:37,001 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:37,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:37,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:37,214 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:37,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:37,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1073535039, now seen corresponding path program 1 times [2021-11-13 01:33:37,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:37,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216786099] [2021-11-13 01:33:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:37,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:37,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:37,217 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:37,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:33:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:38,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:38,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:39,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:40,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:40,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216786099] [2021-11-13 01:33:40,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216786099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:40,416 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:40,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:40,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240527017] [2021-11-13 01:33:40,417 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:40,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:40,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:40,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:40,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:40,418 INFO L87 Difference]: Start difference. First operand 2799 states and 3739 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 01:33:40,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:40,795 INFO L93 Difference]: Finished difference Result 2799 states and 3739 transitions. [2021-11-13 01:33:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:40,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 114 [2021-11-13 01:33:40,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:40,842 INFO L225 Difference]: With dead ends: 2799 [2021-11-13 01:33:40,843 INFO L226 Difference]: Without dead ends: 2797 [2021-11-13 01:33:40,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:40,845 INFO L933 BasicCegarLoop]: 2239 mSDtfsCounter, 2142 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 6713 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.91ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:40,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2144 Valid, 6713 Invalid, 2 Unknown, 0 Unchecked, 19.48ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 10.91ms Time] [2021-11-13 01:33:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2021-11-13 01:33:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2797. [2021-11-13 01:33:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 1848 states have (on average 1.219155844155844) internal successors, (2253), 1929 states have internal predecessors, (2253), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3737 transitions. [2021-11-13 01:33:41,140 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3737 transitions. Word has length 114 [2021-11-13 01:33:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:41,140 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 3737 transitions. [2021-11-13 01:33:41,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 01:33:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3737 transitions. [2021-11-13 01:33:41,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-13 01:33:41,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:41,144 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:41,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:41,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:41,370 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:41,371 INFO L85 PathProgramCache]: Analyzing trace with hash -98508847, now seen corresponding path program 1 times [2021-11-13 01:33:41,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:41,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963572291] [2021-11-13 01:33:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:41,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:41,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:41,375 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:41,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 01:33:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:42,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:42,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:43,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:44,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:44,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963572291] [2021-11-13 01:33:44,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963572291] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:44,526 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:44,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:44,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974535547] [2021-11-13 01:33:44,527 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:44,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:44,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:44,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:44,528 INFO L87 Difference]: Start difference. First operand 2797 states and 3737 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 01:33:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:44,935 INFO L93 Difference]: Finished difference Result 2797 states and 3737 transitions. [2021-11-13 01:33:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:44,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 120 [2021-11-13 01:33:44,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:44,949 INFO L225 Difference]: With dead ends: 2797 [2021-11-13 01:33:44,950 INFO L226 Difference]: Without dead ends: 2795 [2021-11-13 01:33:44,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:44,953 INFO L933 BasicCegarLoop]: 2237 mSDtfsCounter, 2134 mSDsluCounter, 4470 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 6707 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.94ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:44,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 6707 Invalid, 2 Unknown, 0 Unchecked, 18.80ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 12.94ms Time] [2021-11-13 01:33:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2021-11-13 01:33:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2795. [2021-11-13 01:33:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2795 states, 1847 states have (on average 1.218733080671359) internal successors, (2251), 1927 states have internal predecessors, (2251), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3735 transitions. [2021-11-13 01:33:45,245 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3735 transitions. Word has length 120 [2021-11-13 01:33:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:45,245 INFO L470 AbstractCegarLoop]: Abstraction has 2795 states and 3735 transitions. [2021-11-13 01:33:45,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 01:33:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3735 transitions. [2021-11-13 01:33:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-13 01:33:45,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:45,249 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:45,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:45,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:45,463 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:45,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2023284313, now seen corresponding path program 1 times [2021-11-13 01:33:45,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:45,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079043743] [2021-11-13 01:33:45,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:45,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:45,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:45,467 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:45,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 01:33:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:46,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:46,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:48,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:48,664 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:48,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079043743] [2021-11-13 01:33:48,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079043743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:48,665 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:48,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:48,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743589770] [2021-11-13 01:33:48,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:48,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:48,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:48,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:48,666 INFO L87 Difference]: Start difference. First operand 2795 states and 3735 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-13 01:33:49,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:49,002 INFO L93 Difference]: Finished difference Result 2795 states and 3735 transitions. [2021-11-13 01:33:49,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:49,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 126 [2021-11-13 01:33:49,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:49,015 INFO L225 Difference]: With dead ends: 2795 [2021-11-13 01:33:49,015 INFO L226 Difference]: Without dead ends: 2793 [2021-11-13 01:33:49,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:49,017 INFO L933 BasicCegarLoop]: 2235 mSDtfsCounter, 2129 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.19ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:49,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2131 Valid, 4468 Invalid, 2 Unknown, 0 Unchecked, 12.92ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 12.19ms Time] [2021-11-13 01:33:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2021-11-13 01:33:49,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2793. [2021-11-13 01:33:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2793 states, 1846 states have (on average 1.2183098591549295) internal successors, (2249), 1925 states have internal predecessors, (2249), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 3733 transitions. [2021-11-13 01:33:49,338 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 3733 transitions. Word has length 126 [2021-11-13 01:33:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:49,339 INFO L470 AbstractCegarLoop]: Abstraction has 2793 states and 3733 transitions. [2021-11-13 01:33:49,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-13 01:33:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 3733 transitions. [2021-11-13 01:33:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-13 01:33:49,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:49,343 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:49,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:49,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:49,563 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:49,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1040437043, now seen corresponding path program 1 times [2021-11-13 01:33:49,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:49,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589426830] [2021-11-13 01:33:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:49,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:49,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:49,567 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:49,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 01:33:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:50,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:50,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:52,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:52,871 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:52,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589426830] [2021-11-13 01:33:52,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589426830] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:52,871 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:52,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:52,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100233356] [2021-11-13 01:33:52,872 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:52,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:52,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:52,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:52,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:52,873 INFO L87 Difference]: Start difference. First operand 2793 states and 3733 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-13 01:33:53,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:53,270 INFO L93 Difference]: Finished difference Result 2793 states and 3733 transitions. [2021-11-13 01:33:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:53,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 132 [2021-11-13 01:33:53,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:53,283 INFO L225 Difference]: With dead ends: 2793 [2021-11-13 01:33:53,283 INFO L226 Difference]: Without dead ends: 2791 [2021-11-13 01:33:53,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:53,287 INFO L933 BasicCegarLoop]: 2233 mSDtfsCounter, 2121 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.13ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:53,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2123 Valid, 4464 Invalid, 2 Unknown, 0 Unchecked, 12.78ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 10.13ms Time] [2021-11-13 01:33:53,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-11-13 01:33:53,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2791. [2021-11-13 01:33:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 1845 states have (on average 1.2178861788617885) internal successors, (2247), 1923 states have internal predecessors, (2247), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3731 transitions. [2021-11-13 01:33:53,604 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3731 transitions. Word has length 132 [2021-11-13 01:33:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:53,605 INFO L470 AbstractCegarLoop]: Abstraction has 2791 states and 3731 transitions. [2021-11-13 01:33:53,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-13 01:33:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3731 transitions. [2021-11-13 01:33:53,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-13 01:33:53,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:53,609 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:53,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:53,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:53,831 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:53,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash -151772503, now seen corresponding path program 1 times [2021-11-13 01:33:53,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:53,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743460478] [2021-11-13 01:33:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:53,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:53,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:53,834 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:53,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 01:33:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:55,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:55,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:56,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:57,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:57,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743460478] [2021-11-13 01:33:57,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743460478] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:57,210 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:57,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:33:57,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11211397] [2021-11-13 01:33:57,211 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:57,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:57,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:57,213 INFO L87 Difference]: Start difference. First operand 2791 states and 3731 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-13 01:33:57,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:57,584 INFO L93 Difference]: Finished difference Result 2791 states and 3731 transitions. [2021-11-13 01:33:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:57,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 138 [2021-11-13 01:33:57,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:57,598 INFO L225 Difference]: With dead ends: 2791 [2021-11-13 01:33:57,598 INFO L226 Difference]: Without dead ends: 2789 [2021-11-13 01:33:57,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:57,601 INFO L933 BasicCegarLoop]: 2231 mSDtfsCounter, 2113 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 4460 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.81ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:57,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2115 Valid, 4460 Invalid, 2 Unknown, 0 Unchecked, 13.36ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 9.81ms Time] [2021-11-13 01:33:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-11-13 01:33:57,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2789. [2021-11-13 01:33:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 1844 states have (on average 1.217462039045553) internal successors, (2245), 1921 states have internal predecessors, (2245), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:33:57,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3729 transitions. [2021-11-13 01:33:57,967 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3729 transitions. Word has length 138 [2021-11-13 01:33:57,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:57,967 INFO L470 AbstractCegarLoop]: Abstraction has 2789 states and 3729 transitions. [2021-11-13 01:33:57,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-13 01:33:57,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3729 transitions. [2021-11-13 01:33:57,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-13 01:33:57,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:57,972 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:33:58,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:58,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:58,195 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:33:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1041944409, now seen corresponding path program 1 times [2021-11-13 01:33:58,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:58,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398619216] [2021-11-13 01:33:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:58,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:58,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:58,198 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:58,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 01:33:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:59,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:59,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:01,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:02,386 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:02,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398619216] [2021-11-13 01:34:02,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398619216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:02,387 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:02,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-13 01:34:02,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711148607] [2021-11-13 01:34:02,387 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:02,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:34:02,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:02,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:34:02,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:34:02,389 INFO L87 Difference]: Start difference. First operand 2789 states and 3729 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 3 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-13 01:34:02,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:02,852 INFO L93 Difference]: Finished difference Result 2789 states and 3729 transitions. [2021-11-13 01:34:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:34:02,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 3 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 144 [2021-11-13 01:34:02,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:02,862 INFO L225 Difference]: With dead ends: 2789 [2021-11-13 01:34:02,863 INFO L226 Difference]: Without dead ends: 2787 [2021-11-13 01:34:02,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:34:02,865 INFO L933 BasicCegarLoop]: 2229 mSDtfsCounter, 2168 mSDsluCounter, 4454 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 6683 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.98ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.48ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:02,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2170 Valid, 6683 Invalid, 25 Unknown, 0 Unchecked, 17.98ms Time], IncrementalHoareTripleChecker [23 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 45.48ms Time] [2021-11-13 01:34:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2021-11-13 01:34:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2787. [2021-11-13 01:34:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 1843 states have (on average 1.2170374389582204) internal successors, (2243), 1919 states have internal predecessors, (2243), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:34:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3727 transitions. [2021-11-13 01:34:03,216 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3727 transitions. Word has length 144 [2021-11-13 01:34:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:03,217 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 3727 transitions. [2021-11-13 01:34:03,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 3 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-13 01:34:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3727 transitions. [2021-11-13 01:34:03,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 01:34:03,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:03,221 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:34:03,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:03,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:03,443 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:34:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash 949432085, now seen corresponding path program 1 times [2021-11-13 01:34:03,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:03,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102002653] [2021-11-13 01:34:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:03,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:03,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:03,446 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:03,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 01:34:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:04,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:34:04,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:06,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:07,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:07,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102002653] [2021-11-13 01:34:07,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102002653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:07,193 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:07,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:34:07,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269284435] [2021-11-13 01:34:07,194 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:07,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:34:07,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:07,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:34:07,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:34:07,196 INFO L87 Difference]: Start difference. First operand 2787 states and 3727 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-13 01:34:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:07,541 INFO L93 Difference]: Finished difference Result 2787 states and 3727 transitions. [2021-11-13 01:34:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:34:07,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 150 [2021-11-13 01:34:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:07,553 INFO L225 Difference]: With dead ends: 2787 [2021-11-13 01:34:07,553 INFO L226 Difference]: Without dead ends: 2785 [2021-11-13 01:34:07,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:34:07,556 INFO L933 BasicCegarLoop]: 2227 mSDtfsCounter, 2094 mSDsluCounter, 4450 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 6677 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.25ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:07,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2096 Valid, 6677 Invalid, 2 Unknown, 0 Unchecked, 14.65ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 11.25ms Time] [2021-11-13 01:34:07,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-11-13 01:34:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2785. [2021-11-13 01:34:07,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 1842 states have (on average 1.216612377850163) internal successors, (2241), 1917 states have internal predecessors, (2241), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:34:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3725 transitions. [2021-11-13 01:34:07,887 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3725 transitions. Word has length 150 [2021-11-13 01:34:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:07,887 INFO L470 AbstractCegarLoop]: Abstraction has 2785 states and 3725 transitions. [2021-11-13 01:34:07,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-13 01:34:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3725 transitions. [2021-11-13 01:34:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-13 01:34:07,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:07,891 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:34:07,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:08,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:08,112 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:34:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1252003947, now seen corresponding path program 1 times [2021-11-13 01:34:08,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:08,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294952528] [2021-11-13 01:34:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:08,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:08,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:08,115 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:08,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 01:34:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:09,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:34:09,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:10,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:11,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:11,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294952528] [2021-11-13 01:34:11,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294952528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:11,508 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:11,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:34:11,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004030374] [2021-11-13 01:34:11,508 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:11,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:34:11,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:11,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:34:11,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:34:11,510 INFO L87 Difference]: Start difference. First operand 2785 states and 3725 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-13 01:34:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:11,823 INFO L93 Difference]: Finished difference Result 2785 states and 3725 transitions. [2021-11-13 01:34:11,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:34:11,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 156 [2021-11-13 01:34:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:11,836 INFO L225 Difference]: With dead ends: 2785 [2021-11-13 01:34:11,836 INFO L226 Difference]: Without dead ends: 2783 [2021-11-13 01:34:11,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:34:11,838 INFO L933 BasicCegarLoop]: 2225 mSDtfsCounter, 2089 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 4448 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.28ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:11,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2091 Valid, 4448 Invalid, 2 Unknown, 0 Unchecked, 8.42ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 11.28ms Time] [2021-11-13 01:34:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2021-11-13 01:34:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2783. [2021-11-13 01:34:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 1841 states have (on average 1.216186854970125) internal successors, (2239), 1915 states have internal predecessors, (2239), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:34:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3723 transitions. [2021-11-13 01:34:12,085 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3723 transitions. Word has length 156 [2021-11-13 01:34:12,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:12,086 INFO L470 AbstractCegarLoop]: Abstraction has 2783 states and 3723 transitions. [2021-11-13 01:34:12,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-13 01:34:12,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3723 transitions. [2021-11-13 01:34:12,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-13 01:34:12,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:12,090 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:12,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:12,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:12,315 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:34:12,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:12,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1764725485, now seen corresponding path program 1 times [2021-11-13 01:34:12,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:12,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398878220] [2021-11-13 01:34:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:12,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:12,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:12,318 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:12,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 01:34:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:13,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:34:13,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:15,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:15,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:15,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398878220] [2021-11-13 01:34:15,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398878220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:15,816 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:15,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:34:15,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452440808] [2021-11-13 01:34:15,816 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:15,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:34:15,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:15,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:34:15,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:34:15,820 INFO L87 Difference]: Start difference. First operand 2783 states and 3723 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-13 01:34:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:16,166 INFO L93 Difference]: Finished difference Result 2783 states and 3723 transitions. [2021-11-13 01:34:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:34:16,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 162 [2021-11-13 01:34:16,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:16,179 INFO L225 Difference]: With dead ends: 2783 [2021-11-13 01:34:16,180 INFO L226 Difference]: Without dead ends: 2781 [2021-11-13 01:34:16,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:34:16,184 INFO L933 BasicCegarLoop]: 2223 mSDtfsCounter, 2078 mSDsluCounter, 4442 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 6665 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.44ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:16,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2080 Valid, 6665 Invalid, 2 Unknown, 0 Unchecked, 13.00ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 9.44ms Time] [2021-11-13 01:34:16,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2021-11-13 01:34:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2781. [2021-11-13 01:34:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 1840 states have (on average 1.2157608695652173) internal successors, (2237), 1913 states have internal predecessors, (2237), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:34:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 3721 transitions. [2021-11-13 01:34:16,468 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 3721 transitions. Word has length 162 [2021-11-13 01:34:16,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:16,469 INFO L470 AbstractCegarLoop]: Abstraction has 2781 states and 3721 transitions. [2021-11-13 01:34:16,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-13 01:34:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 3721 transitions. [2021-11-13 01:34:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-13 01:34:16,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:16,474 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:34:16,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:16,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:16,690 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:34:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash -635778113, now seen corresponding path program 1 times [2021-11-13 01:34:16,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:16,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173905658] [2021-11-13 01:34:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:16,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:16,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:16,695 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:16,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 01:34:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:18,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 01:34:18,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 165 proven. 3 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-13 01:34:19,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-11-13 01:34:21,109 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:21,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173905658] [2021-11-13 01:34:21,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173905658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:34:21,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1067077718] [2021-11-13 01:34:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:21,110 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:34:21,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:34:21,111 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:34:21,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-13 01:34:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:23,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 01:34:23,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 01:34:25,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-13 01:34:26,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1067077718] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:34:26,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:34:26,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8, 6] total 13 [2021-11-13 01:34:26,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473014854] [2021-11-13 01:34:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:26,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:34:26,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:34:26,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:34:26,108 INFO L87 Difference]: Start difference. First operand 2781 states and 3721 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:34:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:26,748 INFO L93 Difference]: Finished difference Result 5630 states and 7556 transitions. [2021-11-13 01:34:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:34:26,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 205 [2021-11-13 01:34:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:26,763 INFO L225 Difference]: With dead ends: 5630 [2021-11-13 01:34:26,764 INFO L226 Difference]: Without dead ends: 2866 [2021-11-13 01:34:26,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:34:26,784 INFO L933 BasicCegarLoop]: 2360 mSDtfsCounter, 320 mSDsluCounter, 8973 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 11333 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.40ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:26,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 11333 Invalid, 12 Unknown, 0 Unchecked, 38.30ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 109.40ms Time] [2021-11-13 01:34:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-11-13 01:34:27,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2781. [2021-11-13 01:34:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 1840 states have (on average 1.2152173913043478) internal successors, (2236), 1912 states have internal predecessors, (2236), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:34:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 3720 transitions. [2021-11-13 01:34:27,165 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 3720 transitions. Word has length 205 [2021-11-13 01:34:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:27,166 INFO L470 AbstractCegarLoop]: Abstraction has 2781 states and 3720 transitions. [2021-11-13 01:34:27,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:34:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 3720 transitions. [2021-11-13 01:34:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-13 01:34:27,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:27,169 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:34:27,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:27,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:27,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:27,593 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:34:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:27,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1566628075, now seen corresponding path program 1 times [2021-11-13 01:34:27,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:27,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683770332] [2021-11-13 01:34:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:27,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:27,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:27,596 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:27,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 01:34:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:28,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:34:28,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:30,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:31,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:31,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683770332] [2021-11-13 01:34:31,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683770332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:31,445 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:31,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:34:31,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231510007] [2021-11-13 01:34:31,445 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:31,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:34:31,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:31,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:34:31,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:34:31,446 INFO L87 Difference]: Start difference. First operand 2781 states and 3720 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-13 01:34:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:31,773 INFO L93 Difference]: Finished difference Result 2781 states and 3720 transitions. [2021-11-13 01:34:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:34:31,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 168 [2021-11-13 01:34:31,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:31,786 INFO L225 Difference]: With dead ends: 2781 [2021-11-13 01:34:31,786 INFO L226 Difference]: Without dead ends: 2779 [2021-11-13 01:34:31,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:34:31,789 INFO L933 BasicCegarLoop]: 2220 mSDtfsCounter, 2072 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 4438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.63ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:31,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2074 Valid, 4438 Invalid, 2 Unknown, 0 Unchecked, 8.71ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 9.63ms Time] [2021-11-13 01:34:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2021-11-13 01:34:32,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2021-11-13 01:34:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2779 states, 1839 states have (on average 1.2147906470908103) internal successors, (2234), 1910 states have internal predecessors, (2234), 743 states have call successors, (743), 189 states have call predecessors, (743), 188 states have return successors, (741), 737 states have call predecessors, (741), 741 states have call successors, (741) [2021-11-13 01:34:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3718 transitions. [2021-11-13 01:34:32,188 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3718 transitions. Word has length 168 [2021-11-13 01:34:32,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:32,189 INFO L470 AbstractCegarLoop]: Abstraction has 2779 states and 3718 transitions. [2021-11-13 01:34:32,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-13 01:34:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3718 transitions. [2021-11-13 01:34:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-13 01:34:32,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:32,193 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:34:32,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:32,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:32,418 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:34:32,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:32,419 INFO L85 PathProgramCache]: Analyzing trace with hash 602549730, now seen corresponding path program 1 times [2021-11-13 01:34:32,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:32,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091967448] [2021-11-13 01:34:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:32,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:32,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:32,422 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:32,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 01:34:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:34,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 01:34:34,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-13 01:34:35,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 27 proven. 14 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-13 01:34:39,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:39,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091967448] [2021-11-13 01:34:39,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091967448] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:34:39,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:34:39,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [15] total 27 [2021-11-13 01:34:39,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715385547] [2021-11-13 01:34:39,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:39,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:34:39,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:34:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-11-13 01:34:39,182 INFO L87 Difference]: Start difference. First operand 2779 states and 3718 transitions. Second operand has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 6 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-13 01:34:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:46,251 INFO L93 Difference]: Finished difference Result 6092 states and 8214 transitions. [2021-11-13 01:34:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 01:34:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 6 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) Word has length 209 [2021-11-13 01:34:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:46,265 INFO L225 Difference]: With dead ends: 6092 [2021-11-13 01:34:46,265 INFO L226 Difference]: Without dead ends: 3333 [2021-11-13 01:34:46,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=244, Invalid=1316, Unknown=0, NotChecked=0, Total=1560 [2021-11-13 01:34:46,288 INFO L933 BasicCegarLoop]: 2732 mSDtfsCounter, 1589 mSDsluCounter, 33087 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4191.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 35819 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.37ms SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4473.34ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:46,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 35819 Invalid, 1565 Unknown, 0 Unchecked, 65.37ms Time], IncrementalHoareTripleChecker [870 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 4473.34ms Time] [2021-11-13 01:34:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2021-11-13 01:34:46,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 2806. [2021-11-13 01:34:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 1859 states have (on average 1.2135556750941365) internal successors, (2256), 1929 states have internal predecessors, (2256), 750 states have call successors, (750), 189 states have call predecessors, (750), 188 states have return successors, (748), 744 states have call predecessors, (748), 748 states have call successors, (748) [2021-11-13 01:34:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3754 transitions. [2021-11-13 01:34:46,654 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3754 transitions. Word has length 209 [2021-11-13 01:34:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:46,655 INFO L470 AbstractCegarLoop]: Abstraction has 2806 states and 3754 transitions. [2021-11-13 01:34:46,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 6 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-13 01:34:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3754 transitions. [2021-11-13 01:34:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-13 01:34:46,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:46,658 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:34:46,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:46,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:46,883 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:34:46,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:46,883 INFO L85 PathProgramCache]: Analyzing trace with hash -286837313, now seen corresponding path program 1 times [2021-11-13 01:34:46,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:46,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374385132] [2021-11-13 01:34:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:46,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:46,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:46,887 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:46,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 01:34:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:48,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:34:48,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:50,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:50,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:50,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374385132] [2021-11-13 01:34:50,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374385132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:50,942 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:50,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:34:50,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093760370] [2021-11-13 01:34:50,942 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:50,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:34:50,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:50,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:34:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:34:50,948 INFO L87 Difference]: Start difference. First operand 2806 states and 3754 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-13 01:34:51,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:51,328 INFO L93 Difference]: Finished difference Result 2806 states and 3754 transitions. [2021-11-13 01:34:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:34:51,329 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), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 174 [2021-11-13 01:34:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:51,338 INFO L225 Difference]: With dead ends: 2806 [2021-11-13 01:34:51,338 INFO L226 Difference]: Without dead ends: 2804 [2021-11-13 01:34:51,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:34:51,341 INFO L933 BasicCegarLoop]: 2218 mSDtfsCounter, 2061 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 6650 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.66ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:51,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2063 Valid, 6650 Invalid, 2 Unknown, 0 Unchecked, 10.71ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 12.66ms Time] [2021-11-13 01:34:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-11-13 01:34:51,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2804. [2021-11-13 01:34:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 1858 states have (on average 1.2131324004305706) internal successors, (2254), 1927 states have internal predecessors, (2254), 750 states have call successors, (750), 189 states have call predecessors, (750), 188 states have return successors, (748), 744 states have call predecessors, (748), 748 states have call successors, (748) [2021-11-13 01:34:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 3752 transitions. [2021-11-13 01:34:51,650 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 3752 transitions. Word has length 174 [2021-11-13 01:34:51,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:51,651 INFO L470 AbstractCegarLoop]: Abstraction has 2804 states and 3752 transitions. [2021-11-13 01:34:51,651 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), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-13 01:34:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 3752 transitions. [2021-11-13 01:34:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-13 01:34:51,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:51,654 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:34:51,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:51,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:51,854 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:34:51,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash 221299263, now seen corresponding path program 1 times [2021-11-13 01:34:51,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:51,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914343188] [2021-11-13 01:34:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:51,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:51,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:51,859 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:51,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-13 01:34:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:53,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:34:53,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:54,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:34:55,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:55,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914343188] [2021-11-13 01:34:55,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914343188] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:55,714 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:55,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 01:34:55,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525675329] [2021-11-13 01:34:55,714 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:55,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:34:55,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:55,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:34:55,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:34:55,715 INFO L87 Difference]: Start difference. First operand 2804 states and 3752 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-13 01:34:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:56,021 INFO L93 Difference]: Finished difference Result 2804 states and 3752 transitions. [2021-11-13 01:34:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:34:56,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 180 [2021-11-13 01:34:56,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:56,030 INFO L225 Difference]: With dead ends: 2804 [2021-11-13 01:34:56,030 INFO L226 Difference]: Without dead ends: 2611 [2021-11-13 01:34:56,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:34:56,034 INFO L933 BasicCegarLoop]: 2217 mSDtfsCounter, 2052 mSDsluCounter, 4434 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 6651 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.46ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:56,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2052 Valid, 6651 Invalid, 1 Unknown, 0 Unchecked, 8.92ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 4.46ms Time] [2021-11-13 01:34:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-11-13 01:34:56,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2021-11-13 01:34:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 1740 states have (on average 1.2241379310344827) internal successors, (2130), 1806 states have internal predecessors, (2130), 695 states have call successors, (695), 169 states have call predecessors, (695), 169 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) [2021-11-13 01:34:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3520 transitions. [2021-11-13 01:34:56,428 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3520 transitions. Word has length 180 [2021-11-13 01:34:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:56,429 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3520 transitions. [2021-11-13 01:34:56,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-13 01:34:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3520 transitions. [2021-11-13 01:34:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-13 01:34:56,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:56,435 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:56,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:56,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:56,637 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:34:56,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:56,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1836703692, now seen corresponding path program 1 times [2021-11-13 01:34:56,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:56,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325025119] [2021-11-13 01:34:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:56,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:56,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:56,640 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:56,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 01:34:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:58,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:34:58,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-13 01:34:59,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-11-13 01:35:00,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:00,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325025119] [2021-11-13 01:35:00,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325025119] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:00,796 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:35:00,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 01:35:00,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39002385] [2021-11-13 01:35:00,797 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:00,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:35:00,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:00,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:35:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:35:00,799 INFO L87 Difference]: Start difference. First operand 2611 states and 3520 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-13 01:35:03,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:04,226 INFO L93 Difference]: Finished difference Result 5301 states and 7148 transitions. [2021-11-13 01:35:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:35:04,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 280 [2021-11-13 01:35:04,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:04,244 INFO L225 Difference]: With dead ends: 5301 [2021-11-13 01:35:04,244 INFO L226 Difference]: Without dead ends: 2709 [2021-11-13 01:35:04,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:35:04,256 INFO L933 BasicCegarLoop]: 2062 mSDtfsCounter, 149 mSDsluCounter, 10151 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2782.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 12213 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.25ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2862.10ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:04,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 12213 Invalid, 103 Unknown, 0 Unchecked, 17.25ms Time], IncrementalHoareTripleChecker [63 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 2862.10ms Time] [2021-11-13 01:35:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2021-11-13 01:35:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2614. [2021-11-13 01:35:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 1743 states have (on average 1.2237521514629948) internal successors, (2133), 1809 states have internal predecessors, (2133), 695 states have call successors, (695), 169 states have call predecessors, (695), 169 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) [2021-11-13 01:35:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3523 transitions. [2021-11-13 01:35:04,653 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3523 transitions. Word has length 280 [2021-11-13 01:35:04,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:04,653 INFO L470 AbstractCegarLoop]: Abstraction has 2614 states and 3523 transitions. [2021-11-13 01:35:04,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-13 01:35:04,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3523 transitions. [2021-11-13 01:35:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-13 01:35:04,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:04,658 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:35:04,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:04,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:35:04,879 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:35:04,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:04,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1278457160, now seen corresponding path program 1 times [2021-11-13 01:35:04,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:04,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202340106] [2021-11-13 01:35:04,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:04,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:04,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:04,882 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:04,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-13 01:35:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:06,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 01:35:06,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-11-13 01:35:09,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2021-11-13 01:35:10,966 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:10,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202340106] [2021-11-13 01:35:10,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202340106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:10,969 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:35:10,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 15] imperfect sequences [] total 18 [2021-11-13 01:35:10,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099679865] [2021-11-13 01:35:10,969 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:10,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 01:35:10,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:10,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 01:35:10,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:35:10,971 INFO L87 Difference]: Start difference. First operand 2614 states and 3523 transitions. Second operand has 18 states, 17 states have (on average 9.0) internal successors, (153), 17 states have internal predecessors, (153), 8 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (52), 8 states have call predecessors, (52), 8 states have call successors, (52) [2021-11-13 01:35:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:17,864 INFO L93 Difference]: Finished difference Result 6091 states and 8274 transitions. [2021-11-13 01:35:17,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:35:17,865 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 9.0) internal successors, (153), 17 states have internal predecessors, (153), 8 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (52), 8 states have call predecessors, (52), 8 states have call successors, (52) Word has length 301 [2021-11-13 01:35:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:17,878 INFO L225 Difference]: With dead ends: 6091 [2021-11-13 01:35:17,878 INFO L226 Difference]: Without dead ends: 3495 [2021-11-13 01:35:17,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 01:35:17,892 INFO L933 BasicCegarLoop]: 2412 mSDtfsCounter, 1270 mSDsluCounter, 29622 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3841.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 32034 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.28ms SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4056.42ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:17,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 32034 Invalid, 1100 Unknown, 0 Unchecked, 44.28ms Time], IncrementalHoareTripleChecker [462 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 4056.42ms Time] [2021-11-13 01:35:17,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2021-11-13 01:35:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 2609. [2021-11-13 01:35:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 1741 states have (on average 1.2240091901206203) internal successors, (2131), 1807 states have internal predecessors, (2131), 692 states have call successors, (692), 169 states have call predecessors, (692), 169 states have return successors, (692), 688 states have call predecessors, (692), 692 states have call successors, (692) [2021-11-13 01:35:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 3515 transitions. [2021-11-13 01:35:18,196 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 3515 transitions. Word has length 301 [2021-11-13 01:35:18,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:18,197 INFO L470 AbstractCegarLoop]: Abstraction has 2609 states and 3515 transitions. [2021-11-13 01:35:18,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 9.0) internal successors, (153), 17 states have internal predecessors, (153), 8 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (52), 8 states have call predecessors, (52), 8 states have call successors, (52) [2021-11-13 01:35:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 3515 transitions. [2021-11-13 01:35:18,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-13 01:35:18,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:18,201 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-13 01:35:18,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:18,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:35:18,423 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:35:18,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:18,423 INFO L85 PathProgramCache]: Analyzing trace with hash 20252910, now seen corresponding path program 1 times [2021-11-13 01:35:18,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:18,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241899161] [2021-11-13 01:35:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:18,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:18,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:18,426 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:18,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-13 01:35:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:20,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:35:20,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-13 01:35:21,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-13 01:35:23,106 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:23,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241899161] [2021-11-13 01:35:23,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241899161] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:23,106 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:35:23,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 01:35:23,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830607630] [2021-11-13 01:35:23,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:23,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:35:23,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:35:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:35:23,108 INFO L87 Difference]: Start difference. First operand 2609 states and 3515 transitions. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 8 states have internal predecessors, (167), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 4 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-13 01:35:23,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:23,882 INFO L93 Difference]: Finished difference Result 5338 states and 7199 transitions. [2021-11-13 01:35:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:35:23,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 8 states have internal predecessors, (167), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 4 states have call predecessors, (52), 2 states have call successors, (52) Word has length 299 [2021-11-13 01:35:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:23,894 INFO L225 Difference]: With dead ends: 5338 [2021-11-13 01:35:23,895 INFO L226 Difference]: Without dead ends: 2748 [2021-11-13 01:35:23,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:35:23,908 INFO L933 BasicCegarLoop]: 2102 mSDtfsCounter, 209 mSDsluCounter, 10426 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 334.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 12528 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.28ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 376.86ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:23,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 12528 Invalid, 113 Unknown, 0 Unchecked, 13.28ms Time], IncrementalHoareTripleChecker [73 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 376.86ms Time] [2021-11-13 01:35:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2021-11-13 01:35:24,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2614. [2021-11-13 01:35:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 1745 states have (on average 1.2234957020057307) internal successors, (2135), 1811 states have internal predecessors, (2135), 692 states have call successors, (692), 169 states have call predecessors, (692), 170 states have return successors, (695), 689 states have call predecessors, (695), 692 states have call successors, (695) [2021-11-13 01:35:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3522 transitions. [2021-11-13 01:35:24,351 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3522 transitions. Word has length 299 [2021-11-13 01:35:24,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:24,352 INFO L470 AbstractCegarLoop]: Abstraction has 2614 states and 3522 transitions. [2021-11-13 01:35:24,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 8 states have internal predecessors, (167), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 4 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-13 01:35:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3522 transitions. [2021-11-13 01:35:24,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-13 01:35:24,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:24,356 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-13 01:35:24,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:24,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:35:24,574 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:35:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash 25128800, now seen corresponding path program 1 times [2021-11-13 01:35:24,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:24,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544763554] [2021-11-13 01:35:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:24,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:24,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:24,579 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:24,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-13 01:35:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:26,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:35:26,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-13 01:35:27,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-11-13 01:35:28,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:28,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544763554] [2021-11-13 01:35:28,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544763554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:28,412 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:35:28,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:35:28,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312451179] [2021-11-13 01:35:28,413 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:28,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:35:28,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:28,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:35:28,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:35:28,415 INFO L87 Difference]: Start difference. First operand 2614 states and 3522 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-13 01:35:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:28,815 INFO L93 Difference]: Finished difference Result 5226 states and 7046 transitions. [2021-11-13 01:35:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:35:28,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 315 [2021-11-13 01:35:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:28,827 INFO L225 Difference]: With dead ends: 5226 [2021-11-13 01:35:28,827 INFO L226 Difference]: Without dead ends: 2631 [2021-11-13 01:35:28,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:35:28,839 INFO L933 BasicCegarLoop]: 1989 mSDtfsCounter, 30 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3971 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.54ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.64ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:28,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 3971 Invalid, 15 Unknown, 0 Unchecked, 4.54ms Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 81.64ms Time] [2021-11-13 01:35:28,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2021-11-13 01:35:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2623. [2021-11-13 01:35:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 1752 states have (on average 1.2237442922374429) internal successors, (2144), 1819 states have internal predecessors, (2144), 694 states have call successors, (694), 169 states have call predecessors, (694), 170 states have return successors, (697), 691 states have call predecessors, (697), 694 states have call successors, (697) [2021-11-13 01:35:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3535 transitions. [2021-11-13 01:35:29,188 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3535 transitions. Word has length 315 [2021-11-13 01:35:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:29,189 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 3535 transitions. [2021-11-13 01:35:29,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-13 01:35:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3535 transitions. [2021-11-13 01:35:29,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-13 01:35:29,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:29,191 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-13 01:35:29,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:29,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:35:29,392 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:35:29,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:29,392 INFO L85 PathProgramCache]: Analyzing trace with hash -720018598, now seen corresponding path program 1 times [2021-11-13 01:35:29,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:29,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441158591] [2021-11-13 01:35:29,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:29,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:29,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:29,395 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:29,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-13 01:35:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:31,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:35:31,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-13 01:35:32,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2021-11-13 01:35:33,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:33,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441158591] [2021-11-13 01:35:33,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441158591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:33,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:35:33,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 01:35:33,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268371039] [2021-11-13 01:35:33,648 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:33,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:35:33,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:35:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:35:33,649 INFO L87 Difference]: Start difference. First operand 2623 states and 3535 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-13 01:35:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:34,106 INFO L93 Difference]: Finished difference Result 5237 states and 7062 transitions. [2021-11-13 01:35:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:35:34,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 329 [2021-11-13 01:35:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:34,118 INFO L225 Difference]: With dead ends: 5237 [2021-11-13 01:35:34,118 INFO L226 Difference]: Without dead ends: 2633 [2021-11-13 01:35:34,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:35:34,127 INFO L933 BasicCegarLoop]: 1987 mSDtfsCounter, 3 mSDsluCounter, 5950 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7937 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.66ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.70ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:34,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7937 Invalid, 21 Unknown, 0 Unchecked, 7.66ms Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 98.70ms Time] [2021-11-13 01:35:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2021-11-13 01:35:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2633. [2021-11-13 01:35:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 1760 states have (on average 1.2227272727272727) internal successors, (2152), 1825 states have internal predecessors, (2152), 696 states have call successors, (696), 169 states have call predecessors, (696), 170 states have return successors, (699), 693 states have call predecessors, (699), 696 states have call successors, (699) [2021-11-13 01:35:34,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3547 transitions. [2021-11-13 01:35:34,533 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3547 transitions. Word has length 329 [2021-11-13 01:35:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:34,534 INFO L470 AbstractCegarLoop]: Abstraction has 2633 states and 3547 transitions. [2021-11-13 01:35:34,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-13 01:35:34,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3547 transitions. [2021-11-13 01:35:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-11-13 01:35:34,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:34,538 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-13 01:35:34,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:34,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:35:34,755 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:35:34,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:34,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1524035552, now seen corresponding path program 1 times [2021-11-13 01:35:34,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:34,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611775774] [2021-11-13 01:35:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:34,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:34,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:34,759 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:34,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-13 01:35:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:37,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:35:37,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 104 proven. 7 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2021-11-13 01:35:38,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-13 01:35:39,333 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:39,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611775774] [2021-11-13 01:35:39,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611775774] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:39,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1014733420] [2021-11-13 01:35:39,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:39,338 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:35:39,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:35:39,344 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:35:39,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-13 01:35:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:40,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:35:40,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 104 proven. 7 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2021-11-13 01:35:41,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-13 01:35:42,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1014733420] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:42,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844470160] [2021-11-13 01:35:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:42,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:35:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:35:42,735 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:35:42,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-13 01:35:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:43,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:35:43,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-13 01:35:44,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-11-13 01:35:45,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844470160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:45,461 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:35:45,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6, 6, 6] total 13 [2021-11-13 01:35:45,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374092940] [2021-11-13 01:35:45,462 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:45,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:35:45,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:45,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:35:45,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:35:45,463 INFO L87 Difference]: Start difference. First operand 2633 states and 3547 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-13 01:35:46,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:46,380 INFO L93 Difference]: Finished difference Result 5397 states and 7274 transitions. [2021-11-13 01:35:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:35:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 341 [2021-11-13 01:35:46,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:46,392 INFO L225 Difference]: With dead ends: 5397 [2021-11-13 01:35:46,392 INFO L226 Difference]: Without dead ends: 2783 [2021-11-13 01:35:46,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2044 GetRequests, 2031 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:35:46,401 INFO L933 BasicCegarLoop]: 2132 mSDtfsCounter, 196 mSDsluCounter, 6120 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 373.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 8252 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.73ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 413.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:46,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 8252 Invalid, 134 Unknown, 0 Unchecked, 8.73ms Time], IncrementalHoareTripleChecker [90 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 413.69ms Time] [2021-11-13 01:35:46,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2021-11-13 01:35:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2636. [2021-11-13 01:35:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 1763 states have (on average 1.2223482699943278) internal successors, (2155), 1828 states have internal predecessors, (2155), 696 states have call successors, (696), 169 states have call predecessors, (696), 170 states have return successors, (699), 693 states have call predecessors, (699), 696 states have call successors, (699) [2021-11-13 01:35:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3550 transitions. [2021-11-13 01:35:46,721 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3550 transitions. Word has length 341 [2021-11-13 01:35:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:46,722 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3550 transitions. [2021-11-13 01:35:46,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-13 01:35:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3550 transitions. [2021-11-13 01:35:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-13 01:35:46,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:46,726 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 8, 8, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:35:46,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:46,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-11-13 01:35:47,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:47,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:35:47,331 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:35:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash -969346047, now seen corresponding path program 1 times [2021-11-13 01:35:47,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:47,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990919506] [2021-11-13 01:35:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:47,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:47,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:47,334 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:47,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-13 01:35:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:49,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:35:49,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 113 proven. 7 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-13 01:35:51,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2021-11-13 01:35:52,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:52,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990919506] [2021-11-13 01:35:52,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990919506] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:52,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1098681983] [2021-11-13 01:35:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:52,307 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:35:52,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:35:52,308 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:35:52,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2021-11-13 01:35:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:53,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:35:53,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 113 proven. 7 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-13 01:35:54,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2021-11-13 01:35:55,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1098681983] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:55,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546112040] [2021-11-13 01:35:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:55,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:35:55,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:35:55,973 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:35:55,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-13 01:35:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:57,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:35:57,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-11-13 01:35:58,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2021-11-13 01:35:59,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546112040] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:59,536 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:35:59,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6, 6, 6] total 16 [2021-11-13 01:35:59,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237557405] [2021-11-13 01:35:59,537 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:59,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:35:59,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:59,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:35:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:35:59,538 INFO L87 Difference]: Start difference. First operand 2636 states and 3550 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 6 states have internal predecessors, (166), 2 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 4 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-13 01:36:00,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:00,247 INFO L93 Difference]: Finished difference Result 5432 states and 7328 transitions. [2021-11-13 01:36:00,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:36:00,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 6 states have internal predecessors, (166), 2 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 4 states have call predecessors, (60), 2 states have call successors, (60) Word has length 382 [2021-11-13 01:36:00,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:00,256 INFO L225 Difference]: With dead ends: 5432 [2021-11-13 01:36:00,256 INFO L226 Difference]: Without dead ends: 2815 [2021-11-13 01:36:00,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2286 GetRequests, 2272 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:36:00,262 INFO L933 BasicCegarLoop]: 2118 mSDtfsCounter, 135 mSDsluCounter, 10422 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 274.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 12540 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 298.86ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:00,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 12540 Invalid, 52 Unknown, 0 Unchecked, 13.35ms Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 298.86ms Time] [2021-11-13 01:36:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2021-11-13 01:36:00,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2640. [2021-11-13 01:36:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 1766 states have (on average 1.2219705549263873) internal successors, (2158), 1831 states have internal predecessors, (2158), 696 states have call successors, (696), 169 states have call predecessors, (696), 171 states have return successors, (704), 694 states have call predecessors, (704), 696 states have call successors, (704) [2021-11-13 01:36:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3558 transitions. [2021-11-13 01:36:00,559 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3558 transitions. Word has length 382 [2021-11-13 01:36:00,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:00,560 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 3558 transitions. [2021-11-13 01:36:00,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 6 states have internal predecessors, (166), 2 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 4 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-13 01:36:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3558 transitions. [2021-11-13 01:36:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-13 01:36:00,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:00,565 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 8, 8, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:36:00,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:00,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:01,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:01,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:36:01,196 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:36:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:01,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1500870979, now seen corresponding path program 1 times [2021-11-13 01:36:01,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:36:01,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861477041] [2021-11-13 01:36:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:01,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:36:01,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:36:01,199 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:36:01,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-13 01:36:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:03,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:36:03,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 125 proven. 7 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-11-13 01:36:05,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2021-11-13 01:36:06,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:36:06,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861477041] [2021-11-13 01:36:06,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861477041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:06,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1180631875] [2021-11-13 01:36:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:06,595 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:36:06,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:36:06,596 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:36:06,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2021-11-13 01:36:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:07,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:36:07,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 125 proven. 7 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-11-13 01:36:09,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2021-11-13 01:36:10,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1180631875] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:10,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260804506] [2021-11-13 01:36:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:10,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:36:10,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:36:10,274 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:36:10,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-13 01:36:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:11,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:36:11,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-13 01:36:12,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-13 01:36:13,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260804506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:13,461 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:36:13,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6, 6, 6] total 15 [2021-11-13 01:36:13,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772138243] [2021-11-13 01:36:13,462 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:13,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:36:13,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:36:13,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:36:13,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:36:13,464 INFO L87 Difference]: Start difference. First operand 2640 states and 3558 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-13 01:36:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:15,197 INFO L93 Difference]: Finished difference Result 5705 states and 7721 transitions. [2021-11-13 01:36:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 01:36:15,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 411 [2021-11-13 01:36:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:15,214 INFO L225 Difference]: With dead ends: 5705 [2021-11-13 01:36:15,214 INFO L226 Difference]: Without dead ends: 3084 [2021-11-13 01:36:15,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2469 GetRequests, 2451 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:36:15,224 INFO L933 BasicCegarLoop]: 2348 mSDtfsCounter, 832 mSDsluCounter, 11278 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 660.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 13626 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.35ms SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 734.76ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:15,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 13626 Invalid, 340 Unknown, 0 Unchecked, 16.35ms Time], IncrementalHoareTripleChecker [266 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 734.76ms Time] [2021-11-13 01:36:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2021-11-13 01:36:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2644. [2021-11-13 01:36:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1770 states have (on average 1.2214689265536722) internal successors, (2162), 1834 states have internal predecessors, (2162), 696 states have call successors, (696), 169 states have call predecessors, (696), 171 states have return successors, (704), 695 states have call predecessors, (704), 696 states have call successors, (704) [2021-11-13 01:36:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3562 transitions. [2021-11-13 01:36:15,649 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3562 transitions. Word has length 411 [2021-11-13 01:36:15,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:15,651 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3562 transitions. [2021-11-13 01:36:15,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-13 01:36:15,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3562 transitions. [2021-11-13 01:36:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-11-13 01:36:15,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:15,657 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 8, 8, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-13 01:36:15,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:15,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:16,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:16,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:36:16,259 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:36:16,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:16,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1126526848, now seen corresponding path program 1 times [2021-11-13 01:36:16,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:36:16,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59406051] [2021-11-13 01:36:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:16,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:36:16,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:36:16,263 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:36:16,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-13 01:36:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:18,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:36:18,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 128 proven. 7 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-11-13 01:36:20,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2021-11-13 01:36:22,013 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:36:22,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59406051] [2021-11-13 01:36:22,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59406051] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:22,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1635582539] [2021-11-13 01:36:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:22,013 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:36:22,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:36:22,014 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:36:22,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2021-11-13 01:36:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:23,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:36:23,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 128 proven. 7 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-11-13 01:36:24,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2021-11-13 01:36:25,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1635582539] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:25,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920106165] [2021-11-13 01:36:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:25,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:36:25,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:36:25,990 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:36:25,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-13 01:36:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:27,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:36:27,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 128 proven. 7 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-11-13 01:36:28,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:29,992 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2021-11-13 01:36:29,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920106165] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:29,992 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:36:29,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-13 01:36:29,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449236695] [2021-11-13 01:36:29,993 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:36:29,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:36:29,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:36:29,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:36:29,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:36:29,996 INFO L87 Difference]: Start difference. First operand 2644 states and 3562 transitions. Second operand has 10 states, 10 states have (on average 23.9) internal successors, (239), 10 states have internal predecessors, (239), 6 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (94), 6 states have call predecessors, (94), 6 states have call successors, (94) [2021-11-13 01:36:30,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:30,969 INFO L93 Difference]: Finished difference Result 5293 states and 7140 transitions. [2021-11-13 01:36:30,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 01:36:30,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.9) internal successors, (239), 10 states have internal predecessors, (239), 6 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (94), 6 states have call predecessors, (94), 6 states have call successors, (94) Word has length 437 [2021-11-13 01:36:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:30,978 INFO L225 Difference]: With dead ends: 5293 [2021-11-13 01:36:30,978 INFO L226 Difference]: Without dead ends: 2668 [2021-11-13 01:36:30,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2621 GetRequests, 2608 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:36:30,985 INFO L933 BasicCegarLoop]: 1993 mSDtfsCounter, 9 mSDsluCounter, 9928 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 297.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11921 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.93ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 308.94ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:30,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 11921 Invalid, 71 Unknown, 0 Unchecked, 9.93ms Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 308.94ms Time] [2021-11-13 01:36:30,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-11-13 01:36:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2668. [2021-11-13 01:36:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 1786 states have (on average 1.219484882418813) internal successors, (2178), 1850 states have internal predecessors, (2178), 704 states have call successors, (704), 169 states have call predecessors, (704), 171 states have return successors, (712), 703 states have call predecessors, (712), 704 states have call successors, (712) [2021-11-13 01:36:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 3594 transitions. [2021-11-13 01:36:31,403 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 3594 transitions. Word has length 437 [2021-11-13 01:36:31,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:31,404 INFO L470 AbstractCegarLoop]: Abstraction has 2668 states and 3594 transitions. [2021-11-13 01:36:31,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.9) internal successors, (239), 10 states have internal predecessors, (239), 6 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (94), 6 states have call predecessors, (94), 6 states have call successors, (94) [2021-11-13 01:36:31,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 3594 transitions. [2021-11-13 01:36:31,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-13 01:36:31,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:31,410 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:36:31,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:31,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:31,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2021-11-13 01:36:32,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:36:32,039 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:36:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1999180020, now seen corresponding path program 2 times [2021-11-13 01:36:32,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:36:32,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304183768] [2021-11-13 01:36:32,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:36:32,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:36:32,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:36:32,043 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:36:32,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-13 01:36:33,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:36:33,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:36:33,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 01:36:33,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2021-11-13 01:36:34,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2021-11-13 01:36:35,767 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:36:35,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304183768] [2021-11-13 01:36:35,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304183768] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:35,767 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:35,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-13 01:36:35,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552078698] [2021-11-13 01:36:35,768 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:35,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:36:35,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:36:35,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:36:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:36:35,770 INFO L87 Difference]: Start difference. First operand 2668 states and 3594 transitions. Second operand has 12 states, 12 states have (on average 15.5) internal successors, (186), 12 states have internal predecessors, (186), 3 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2021-11-13 01:36:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:47,388 INFO L93 Difference]: Finished difference Result 6275 states and 8735 transitions. [2021-11-13 01:36:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-13 01:36:47,389 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.5) internal successors, (186), 12 states have internal predecessors, (186), 3 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) Word has length 461 [2021-11-13 01:36:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:47,411 INFO L225 Difference]: With dead ends: 6275 [2021-11-13 01:36:47,412 INFO L226 Difference]: Without dead ends: 6273 [2021-11-13 01:36:47,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 986 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=991, Invalid=3565, Unknown=0, NotChecked=0, Total=4556 [2021-11-13 01:36:47,418 INFO L933 BasicCegarLoop]: 3339 mSDtfsCounter, 1896 mSDsluCounter, 22034 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 1169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5213.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 25373 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.01ms SdHoareTripleChecker+Time, 1169 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5636.39ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:47,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2178 Valid, 25373 Invalid, 1903 Unknown, 0 Unchecked, 45.01ms Time], IncrementalHoareTripleChecker [1169 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 5636.39ms Time] [2021-11-13 01:36:47,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2021-11-13 01:36:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 2668. [2021-11-13 01:36:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 1786 states have (on average 1.2189249720044792) internal successors, (2177), 1850 states have internal predecessors, (2177), 704 states have call successors, (704), 169 states have call predecessors, (704), 171 states have return successors, (712), 703 states have call predecessors, (712), 704 states have call successors, (712) [2021-11-13 01:36:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 3593 transitions. [2021-11-13 01:36:47,829 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 3593 transitions. Word has length 461 [2021-11-13 01:36:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:47,830 INFO L470 AbstractCegarLoop]: Abstraction has 2668 states and 3593 transitions. [2021-11-13 01:36:47,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.5) internal successors, (186), 12 states have internal predecessors, (186), 3 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2021-11-13 01:36:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 3593 transitions. [2021-11-13 01:36:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-13 01:36:47,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:47,882 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:36:47,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:48,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:36:48,095 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:36:48,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:48,095 INFO L85 PathProgramCache]: Analyzing trace with hash 481716144, now seen corresponding path program 1 times [2021-11-13 01:36:48,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:36:48,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908751858] [2021-11-13 01:36:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:48,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:36:48,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:36:48,099 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:36:48,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-13 01:36:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:50,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:36:50,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 364 proven. 57 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2021-11-13 01:36:53,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-11-13 01:36:55,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:36:55,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908751858] [2021-11-13 01:36:55,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908751858] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:55,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2053256707] [2021-11-13 01:36:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:55,315 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:36:55,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:36:55,316 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:36:55,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2021-11-13 01:36:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:56,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:36:56,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:58,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 364 proven. 57 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2021-11-13 01:36:58,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-11-13 01:36:59,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2053256707] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:59,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397637237] [2021-11-13 01:36:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:59,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:36:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:36:59,978 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:36:59,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-13 01:37:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:01,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:37:01,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-11-13 01:37:07,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-11-13 01:37:10,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397637237] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:10,059 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:37:10,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [10, 10, 10, 10] total 23 [2021-11-13 01:37:10,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749169262] [2021-11-13 01:37:10,061 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:10,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:37:10,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:10,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:37:10,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:37:10,063 INFO L87 Difference]: Start difference. First operand 2668 states and 3593 transitions. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 5 states have internal predecessors, (260), 2 states have call successors, (126), 4 states have call predecessors, (126), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2021-11-13 01:37:10,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:10,786 INFO L93 Difference]: Finished difference Result 3405 states and 4532 transitions. [2021-11-13 01:37:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:37:10,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 5 states have internal predecessors, (260), 2 states have call successors, (126), 4 states have call predecessors, (126), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 491 [2021-11-13 01:37:10,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:10,801 INFO L225 Difference]: With dead ends: 3405 [2021-11-13 01:37:10,801 INFO L226 Difference]: Without dead ends: 3403 [2021-11-13 01:37:10,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2942 GetRequests, 2919 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:37:10,805 INFO L933 BasicCegarLoop]: 2187 mSDtfsCounter, 1243 mSDsluCounter, 5295 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 7482 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.40ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.89ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:10,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1244 Valid, 7482 Invalid, 7 Unknown, 0 Unchecked, 15.40ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 31.89ms Time] [2021-11-13 01:37:10,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2021-11-13 01:37:11,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 3395. [2021-11-13 01:37:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3395 states, 2247 states have (on average 1.2105028927458834) internal successors, (2720), 2316 states have internal predecessors, (2720), 898 states have call successors, (898), 242 states have call predecessors, (898), 244 states have return successors, (905), 897 states have call predecessors, (905), 898 states have call successors, (905) [2021-11-13 01:37:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 4523 transitions. [2021-11-13 01:37:11,322 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 4523 transitions. Word has length 491 [2021-11-13 01:37:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:11,322 INFO L470 AbstractCegarLoop]: Abstraction has 3395 states and 4523 transitions. [2021-11-13 01:37:11,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 5 states have internal predecessors, (260), 2 states have call successors, (126), 4 states have call predecessors, (126), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2021-11-13 01:37:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 4523 transitions. [2021-11-13 01:37:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2021-11-13 01:37:11,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:11,329 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:11,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:11,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (49)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:11,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-11-13 01:37:11,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:37:11,943 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:37:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1740589588, now seen corresponding path program 1 times [2021-11-13 01:37:11,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:11,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778854586] [2021-11-13 01:37:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:11,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:11,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:11,947 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:11,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-11-13 01:37:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:14,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:37:14,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 275 proven. 57 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2021-11-13 01:37:16,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2021-11-13 01:37:18,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:18,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778854586] [2021-11-13 01:37:18,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778854586] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:37:18,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1071811319] [2021-11-13 01:37:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:18,643 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:37:18,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:37:18,644 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:37:18,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2021-11-13 01:37:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:37:20,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 275 proven. 57 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2021-11-13 01:37:21,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2021-11-13 01:37:23,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1071811319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:37:23,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488058506] [2021-11-13 01:37:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:23,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:37:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:37:23,164 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:37:23,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-13 01:37:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:24,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 01:37:24,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2021-11-13 01:37:26,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2021-11-13 01:37:27,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488058506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:27,609 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:37:27,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [10, 10, 10, 10] total 26 [2021-11-13 01:37:27,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178453037] [2021-11-13 01:37:27,610 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:27,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:37:27,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:37:27,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2021-11-13 01:37:27,612 INFO L87 Difference]: Start difference. First operand 3395 states and 4523 transitions. Second operand has 10 states, 10 states have (on average 18.4) internal successors, (184), 9 states have internal predecessors, (184), 2 states have call successors, (61), 1 states have call predecessors, (61), 2 states have return successors, (61), 3 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-13 01:37:30,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:30,173 INFO L93 Difference]: Finished difference Result 7507 states and 10069 transitions. [2021-11-13 01:37:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:37:30,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 9 states have internal predecessors, (184), 2 states have call successors, (61), 1 states have call predecessors, (61), 2 states have return successors, (61), 3 states have call predecessors, (61), 2 states have call successors, (61) Word has length 481 [2021-11-13 01:37:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:30,191 INFO L225 Difference]: With dead ends: 7507 [2021-11-13 01:37:30,192 INFO L226 Difference]: Without dead ends: 4131 [2021-11-13 01:37:30,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2890 GetRequests, 2860 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:37:30,200 INFO L933 BasicCegarLoop]: 2362 mSDtfsCounter, 954 mSDsluCounter, 18321 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 880.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 20683 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.72ms SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 986.84ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:30,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 20683 Invalid, 443 Unknown, 0 Unchecked, 24.72ms Time], IncrementalHoareTripleChecker [323 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 986.84ms Time] [2021-11-13 01:37:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2021-11-13 01:37:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 3649. [2021-11-13 01:37:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3649 states, 2439 states have (on average 1.2111521115211152) internal successors, (2954), 2517 states have internal predecessors, (2954), 958 states have call successors, (958), 242 states have call predecessors, (958), 246 states have return successors, (972), 958 states have call predecessors, (972), 958 states have call successors, (972) [2021-11-13 01:37:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 4884 transitions. [2021-11-13 01:37:30,683 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 4884 transitions. Word has length 481 [2021-11-13 01:37:30,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:30,684 INFO L470 AbstractCegarLoop]: Abstraction has 3649 states and 4884 transitions. [2021-11-13 01:37:30,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 9 states have internal predecessors, (184), 2 states have call successors, (61), 1 states have call predecessors, (61), 2 states have return successors, (61), 3 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-13 01:37:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 4884 transitions. [2021-11-13 01:37:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2021-11-13 01:37:30,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:30,692 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 11, 11, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:30,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (52)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:30,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:31,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:31,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:37:31,331 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:37:31,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:31,331 INFO L85 PathProgramCache]: Analyzing trace with hash -613434527, now seen corresponding path program 1 times [2021-11-13 01:37:31,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:31,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832948885] [2021-11-13 01:37:31,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:31,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:31,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:31,334 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:31,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-13 01:37:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:34,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:37:34,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 382 proven. 57 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2021-11-13 01:37:36,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-11-13 01:37:38,614 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:38,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832948885] [2021-11-13 01:37:38,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832948885] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:37:38,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2093035913] [2021-11-13 01:37:38,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:38,615 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:37:38,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:37:38,616 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:37:38,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2021-11-13 01:37:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:40,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:37:40,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 382 proven. 57 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2021-11-13 01:37:41,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-11-13 01:37:43,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2093035913] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:37:43,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996882720] [2021-11-13 01:37:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:43,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:37:43,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:37:43,530 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:37:43,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-13 01:37:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:45,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 01:37:45,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2021-11-13 01:37:46,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2021-11-13 01:37:47,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996882720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:47,515 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:37:47,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [10, 10, 10, 10] total 23 [2021-11-13 01:37:47,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434486215] [2021-11-13 01:37:47,516 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:47,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:37:47,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:37:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:37:47,517 INFO L87 Difference]: Start difference. First operand 3649 states and 4884 transitions. Second operand has 7 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-13 01:37:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:48,270 INFO L93 Difference]: Finished difference Result 3649 states and 4884 transitions. [2021-11-13 01:37:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:37:48,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 513 [2021-11-13 01:37:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:48,285 INFO L225 Difference]: With dead ends: 3649 [2021-11-13 01:37:48,285 INFO L226 Difference]: Without dead ends: 3647 [2021-11-13 01:37:48,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3074 GetRequests, 3051 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:37:48,288 INFO L933 BasicCegarLoop]: 1980 mSDtfsCounter, 59 mSDsluCounter, 7870 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 9850 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.74ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.74ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:48,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 9850 Invalid, 12 Unknown, 0 Unchecked, 9.74ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 55.74ms Time] [2021-11-13 01:37:48,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-11-13 01:37:48,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3647. [2021-11-13 01:37:48,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 2438 states have (on average 1.2095980311730927) internal successors, (2949), 2515 states have internal predecessors, (2949), 958 states have call successors, (958), 242 states have call predecessors, (958), 246 states have return successors, (972), 958 states have call predecessors, (972), 958 states have call successors, (972) [2021-11-13 01:37:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 4879 transitions. [2021-11-13 01:37:48,741 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 4879 transitions. Word has length 513 [2021-11-13 01:37:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:48,742 INFO L470 AbstractCegarLoop]: Abstraction has 3647 states and 4879 transitions. [2021-11-13 01:37:48,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-13 01:37:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 4879 transitions. [2021-11-13 01:37:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2021-11-13 01:37:48,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:48,751 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 10, 10, 9, 9, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:48,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:48,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (55)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:49,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:49,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:37:49,375 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:37:49,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash -334688383, now seen corresponding path program 1 times [2021-11-13 01:37:49,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:49,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357705626] [2021-11-13 01:37:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:49,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:49,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:49,378 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:49,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-11-13 01:37:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:52,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:37:52,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 442 proven. 57 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-11-13 01:37:54,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2021-11-13 01:37:56,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:56,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357705626] [2021-11-13 01:37:56,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357705626] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:37:56,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1796767739] [2021-11-13 01:37:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:56,586 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:37:56,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:37:56,587 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:37:56,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2021-11-13 01:37:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:58,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:37:58,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 442 proven. 57 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-11-13 01:37:59,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2021-11-13 01:38:01,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1796767739] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:38:01,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673792578] [2021-11-13 01:38:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:01,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:38:01,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:38:01,368 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:38:01,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-13 01:38:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:02,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 01:38:02,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2021-11-13 01:38:05,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 78 proven. 12 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2021-11-13 01:38:07,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673792578] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:38:07,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 01:38:07,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10, 10, 10, 10, 12] total 29 [2021-11-13 01:38:07,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220472596] [2021-11-13 01:38:07,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:07,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:38:07,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:38:07,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:38:07,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2021-11-13 01:38:07,863 INFO L87 Difference]: Start difference. First operand 3647 states and 4879 transitions. Second operand has 12 states, 12 states have (on average 16.75) internal successors, (201), 10 states have internal predecessors, (201), 3 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (67), 5 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-13 01:38:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:12,871 INFO L93 Difference]: Finished difference Result 7598 states and 10203 transitions. [2021-11-13 01:38:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 01:38:12,872 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.75) internal successors, (201), 10 states have internal predecessors, (201), 3 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (67), 5 states have call predecessors, (67), 3 states have call successors, (67) Word has length 512 [2021-11-13 01:38:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:12,883 INFO L225 Difference]: With dead ends: 7598 [2021-11-13 01:38:12,883 INFO L226 Difference]: Without dead ends: 3968 [2021-11-13 01:38:12,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3074 GetRequests, 3040 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=146, Invalid=1114, Unknown=0, NotChecked=0, Total=1260 [2021-11-13 01:38:12,896 INFO L933 BasicCegarLoop]: 2452 mSDtfsCounter, 454 mSDsluCounter, 23771 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3001.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 26223 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.12ms SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3149.34ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:12,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 26223 Invalid, 638 Unknown, 0 Unchecked, 32.12ms Time], IncrementalHoareTripleChecker [175 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 3149.34ms Time] [2021-11-13 01:38:12,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-11-13 01:38:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3415. [2021-11-13 01:38:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 2262 states have (on average 1.207338638373121) internal successors, (2731), 2331 states have internal predecessors, (2731), 902 states have call successors, (902), 242 states have call predecessors, (902), 246 states have return successors, (914), 902 states have call predecessors, (914), 902 states have call successors, (914) [2021-11-13 01:38:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 4547 transitions. [2021-11-13 01:38:13,353 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 4547 transitions. Word has length 512 [2021-11-13 01:38:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:13,354 INFO L470 AbstractCegarLoop]: Abstraction has 3415 states and 4547 transitions. [2021-11-13 01:38:13,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.75) internal successors, (201), 10 states have internal predecessors, (201), 3 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (67), 5 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-13 01:38:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 4547 transitions. [2021-11-13 01:38:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2021-11-13 01:38:13,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:13,359 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 11, 11, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:38:13,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:13,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (58)] Ended with exit code 0 [2021-11-13 01:38:13,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:13,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:38:13,960 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_check_alloc_flagsErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:38:13,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:13,960 INFO L85 PathProgramCache]: Analyzing trace with hash -442426585, now seen corresponding path program 1 times [2021-11-13 01:38:13,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:38:13,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542139661] [2021-11-13 01:38:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:13,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:38:13,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:38:13,964 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:38:13,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-11-13 01:38:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:16,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:38:16,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 382 proven. 57 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2021-11-13 01:38:19,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-11-13 01:38:21,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:38:21,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542139661] [2021-11-13 01:38:21,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542139661] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:38:21,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1310325028] [2021-11-13 01:38:21,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:21,497 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:38:21,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:38:21,498 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:38:21,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2021-11-13 01:38:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:22,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:38:22,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2021-11-13 01:38:28,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2021-11-13 01:38:31,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1310325028] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:38:31,163 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:38:31,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [10, 10] total 20 [2021-11-13 01:38:31,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227620052] [2021-11-13 01:38:31,164 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:31,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:38:31,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:38:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:38:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:38:31,165 INFO L87 Difference]: Start difference. First operand 3415 states and 4547 transitions. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 3 states have call successors, (136), 3 states have call predecessors, (136), 2 states have return successors, (128), 3 states have call predecessors, (128), 3 states have call successors, (128) [2021-11-13 01:38:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:32,927 INFO L93 Difference]: Finished difference Result 6801 states and 9089 transitions. [2021-11-13 01:38:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:38:32,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 3 states have call successors, (136), 3 states have call predecessors, (136), 2 states have return successors, (128), 3 states have call predecessors, (128), 3 states have call successors, (128) Word has length 517 [2021-11-13 01:38:32,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:32,936 INFO L225 Difference]: With dead ends: 6801 [2021-11-13 01:38:32,936 INFO L226 Difference]: Without dead ends: 3405 [2021-11-13 01:38:32,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2064 GetRequests, 2046 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:38:32,944 INFO L933 BasicCegarLoop]: 1978 mSDtfsCounter, 2742 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 973.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2742 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.13ms SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1235.76ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:32,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2742 Valid, 1978 Invalid, 749 Unknown, 0 Unchecked, 10.13ms Time], IncrementalHoareTripleChecker [748 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1235.76ms Time] [2021-11-13 01:38:32,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2021-11-13 01:38:33,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3405. [2021-11-13 01:38:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3405 states, 2253 states have (on average 1.2046160674656015) internal successors, (2714), 2321 states have internal predecessors, (2714), 902 states have call successors, (902), 242 states have call predecessors, (902), 246 states have return successors, (914), 902 states have call predecessors, (914), 902 states have call successors, (914) [2021-11-13 01:38:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3405 states to 3405 states and 4530 transitions. [2021-11-13 01:38:33,365 INFO L78 Accepts]: Start accepts. Automaton has 3405 states and 4530 transitions. Word has length 517 [2021-11-13 01:38:33,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:33,366 INFO L470 AbstractCegarLoop]: Abstraction has 3405 states and 4530 transitions. [2021-11-13 01:38:33,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 3 states have call successors, (136), 3 states have call predecessors, (136), 2 states have return successors, (128), 3 states have call predecessors, (128), 3 states have call successors, (128) [2021-11-13 01:38:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3405 states and 4530 transitions. [2021-11-13 01:38:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2021-11-13 01:38:33,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:33,371 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 9, 9, 9, 9, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2021-11-13 01:38:33,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:33,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:33,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:38:33,772 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:38:33,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1147206391, now seen corresponding path program 1 times [2021-11-13 01:38:33,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:38:33,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847555508] [2021-11-13 01:38:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:33,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:38:33,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:38:33,775 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:38:33,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-11-13 01:38:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:36,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 2429 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:38:36,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 415 proven. 57 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-11-13 01:38:38,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2021-11-13 01:38:41,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:38:41,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847555508] [2021-11-13 01:38:41,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847555508] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:38:41,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1239578061] [2021-11-13 01:38:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:41,216 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:38:41,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:38:41,217 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:38:41,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2021-11-13 01:38:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:42,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 2429 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:38:42,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 415 proven. 57 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-11-13 01:38:44,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2021-11-13 01:38:46,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1239578061] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:38:46,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116705281] [2021-11-13 01:38:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:46,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:38:46,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:38:46,203 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:38:46,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-13 01:38:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:47,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2429 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:38:47,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 1091 trivial. 0 not checked. [2021-11-13 01:38:49,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2021-11-13 01:38:50,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116705281] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:38:50,522 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:38:50,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 10, 10, 10] total 23 [2021-11-13 01:38:50,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510685307] [2021-11-13 01:38:50,524 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:50,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:38:50,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:38:50,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:38:50,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:38:50,526 INFO L87 Difference]: Start difference. First operand 3405 states and 4530 transitions. Second operand has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 5 states have internal predecessors, (194), 2 states have call successors, (72), 4 states have call predecessors, (72), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-13 01:38:52,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:38:53,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:53,416 INFO L93 Difference]: Finished difference Result 3405 states and 4530 transitions. [2021-11-13 01:38:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:38:53,417 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 5 states have internal predecessors, (194), 2 states have call successors, (72), 4 states have call predecessors, (72), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 520 [2021-11-13 01:38:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:53,424 INFO L225 Difference]: With dead ends: 3405 [2021-11-13 01:38:53,424 INFO L226 Difference]: Without dead ends: 3403 [2021-11-13 01:38:53,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3116 GetRequests, 3093 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:38:53,425 INFO L933 BasicCegarLoop]: 2291 mSDtfsCounter, 904 mSDsluCounter, 8392 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2212.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 10683 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2214.31ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:53,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 10683 Invalid, 8 Unknown, 0 Unchecked, 11.16ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2214.31ms Time] [2021-11-13 01:38:53,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2021-11-13 01:38:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 3403. [2021-11-13 01:38:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 2252 states have (on average 1.2038188277087034) internal successors, (2711), 2319 states have internal predecessors, (2711), 902 states have call successors, (902), 242 states have call predecessors, (902), 246 states have return successors, (914), 902 states have call predecessors, (914), 902 states have call successors, (914) [2021-11-13 01:38:53,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 4527 transitions. [2021-11-13 01:38:53,788 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 4527 transitions. Word has length 520 [2021-11-13 01:38:53,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:53,789 INFO L470 AbstractCegarLoop]: Abstraction has 3403 states and 4527 transitions. [2021-11-13 01:38:53,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 5 states have internal predecessors, (194), 2 states have call successors, (72), 4 states have call predecessors, (72), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-13 01:38:53,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 4527 transitions. [2021-11-13 01:38:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2021-11-13 01:38:53,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:53,794 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:38:53,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:54,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:54,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:54,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:38:54,398 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:38:54,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1434770879, now seen corresponding path program 1 times [2021-11-13 01:38:54,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:38:54,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106221102] [2021-11-13 01:38:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:54,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:38:54,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:38:54,401 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:38:54,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-11-13 01:38:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:56,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 2284 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:38:56,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 374 proven. 57 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-13 01:38:59,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2021-11-13 01:39:01,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:39:01,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106221102] [2021-11-13 01:39:01,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106221102] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:39:01,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1784286294] [2021-11-13 01:39:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:01,535 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:39:01,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:39:01,536 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:39:01,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2021-11-13 01:39:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:02,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2284 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:39:02,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:39:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 374 proven. 57 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-13 01:39:04,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2021-11-13 01:39:06,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1784286294] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:39:06,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882456708] [2021-11-13 01:39:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:06,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:39:06,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:39:06,318 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:39:06,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-13 01:39:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:07,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 2284 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:39:07,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:39:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-11-13 01:39:09,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2021-11-13 01:39:10,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882456708] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:39:10,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 01:39:10,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 10, 10, 10, 6] total 23 [2021-11-13 01:39:10,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470108409] [2021-11-13 01:39:10,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:39:10,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:39:10,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:39:10,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:39:10,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:39:10,963 INFO L87 Difference]: Start difference. First operand 3403 states and 4527 transitions. Second operand has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 3 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2021-11-13 01:39:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:39:13,069 INFO L93 Difference]: Finished difference Result 7392 states and 9897 transitions. [2021-11-13 01:39:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:39:13,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 3 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) Word has length 529 [2021-11-13 01:39:13,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:39:13,083 INFO L225 Difference]: With dead ends: 7392 [2021-11-13 01:39:13,083 INFO L226 Difference]: Without dead ends: 4007 [2021-11-13 01:39:13,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3171 GetRequests, 3148 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:39:13,089 INFO L933 BasicCegarLoop]: 2881 mSDtfsCounter, 532 mSDsluCounter, 10238 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1130.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 13119 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.28ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1208.86ms IncrementalHoareTripleChecker+Time [2021-11-13 01:39:13,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 13119 Invalid, 382 Unknown, 0 Unchecked, 17.28ms Time], IncrementalHoareTripleChecker [165 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 1208.86ms Time] [2021-11-13 01:39:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2021-11-13 01:39:13,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 3402. [2021-11-13 01:39:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 2252 states have (on average 1.2033747779751331) internal successors, (2710), 2318 states have internal predecessors, (2710), 901 states have call successors, (901), 242 states have call predecessors, (901), 246 states have return successors, (913), 902 states have call predecessors, (913), 901 states have call successors, (913) [2021-11-13 01:39:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 4524 transitions. [2021-11-13 01:39:13,471 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 4524 transitions. Word has length 529 [2021-11-13 01:39:13,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:39:13,471 INFO L470 AbstractCegarLoop]: Abstraction has 3402 states and 4524 transitions. [2021-11-13 01:39:13,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 3 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2021-11-13 01:39:13,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 4524 transitions. [2021-11-13 01:39:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2021-11-13 01:39:13,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:39:13,483 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 11, 11, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:39:13,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-11-13 01:39:13,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (66)] Forceful destruction successful, exit code 0 [2021-11-13 01:39:13,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-11-13 01:39:14,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:39:14,084 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:39:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:39:14,085 INFO L85 PathProgramCache]: Analyzing trace with hash -671988055, now seen corresponding path program 1 times [2021-11-13 01:39:14,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:39:14,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622876742] [2021-11-13 01:39:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:14,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:39:14,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:39:14,088 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:39:14,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-11-13 01:39:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:17,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:39:17,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:39:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 360 proven. 57 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2021-11-13 01:39:21,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2021-11-13 01:39:23,815 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:39:23,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622876742] [2021-11-13 01:39:23,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622876742] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:39:23,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1926852931] [2021-11-13 01:39:23,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:23,815 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:39:23,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:39:23,816 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:39:23,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process [2021-11-13 01:39:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:25,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:39:25,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:39:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 360 proven. 57 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2021-11-13 01:39:28,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2021-11-13 01:39:30,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1926852931] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:39:30,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455949980] [2021-11-13 01:39:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:30,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:39:30,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:39:30,762 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:39:30,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-13 01:39:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:32,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:39:32,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:39:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 1615 trivial. 0 not checked. [2021-11-13 01:39:33,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2021-11-13 01:39:36,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455949980] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:39:36,167 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:39:36,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 10, 10, 10] total 24 [2021-11-13 01:39:36,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130296701] [2021-11-13 01:39:36,168 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:39:36,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:39:36,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:39:36,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:39:36,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-13 01:39:36,170 INFO L87 Difference]: Start difference. First operand 3402 states and 4524 transitions. Second operand has 8 states, 8 states have (on average 34.75) internal successors, (278), 6 states have internal predecessors, (278), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 4 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-13 01:39:36,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:39:36,654 INFO L93 Difference]: Finished difference Result 6785 states and 9029 transitions. [2021-11-13 01:39:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:39:36,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.75) internal successors, (278), 6 states have internal predecessors, (278), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 4 states have call predecessors, (117), 2 states have call successors, (117) Word has length 770 [2021-11-13 01:39:36,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:39:36,665 INFO L225 Difference]: With dead ends: 6785 [2021-11-13 01:39:36,665 INFO L226 Difference]: Without dead ends: 3402 [2021-11-13 01:39:36,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4614 GetRequests, 4592 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-13 01:39:36,673 INFO L933 BasicCegarLoop]: 1979 mSDtfsCounter, 10 mSDsluCounter, 9864 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 11843 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.96ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.93ms IncrementalHoareTripleChecker+Time [2021-11-13 01:39:36,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 11843 Invalid, 12 Unknown, 0 Unchecked, 9.96ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 45.93ms Time] [2021-11-13 01:39:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2021-11-13 01:39:37,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3402. [2021-11-13 01:39:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 2252 states have (on average 1.2024866785079928) internal successors, (2708), 2318 states have internal predecessors, (2708), 901 states have call successors, (901), 242 states have call predecessors, (901), 246 states have return successors, (913), 902 states have call predecessors, (913), 901 states have call successors, (913) [2021-11-13 01:39:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 4522 transitions. [2021-11-13 01:39:37,111 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 4522 transitions. Word has length 770 [2021-11-13 01:39:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:39:37,112 INFO L470 AbstractCegarLoop]: Abstraction has 3402 states and 4522 transitions. [2021-11-13 01:39:37,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.75) internal successors, (278), 6 states have internal predecessors, (278), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 4 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-13 01:39:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 4522 transitions. [2021-11-13 01:39:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2021-11-13 01:39:37,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:39:37,126 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 11, 11, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:39:37,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (69)] Forceful destruction successful, exit code 0 [2021-11-13 01:39:37,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-11-13 01:39:37,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-11-13 01:39:37,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:39:37,739 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:39:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:39:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1256284647, now seen corresponding path program 1 times [2021-11-13 01:39:37,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:39:37,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214267150] [2021-11-13 01:39:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:37,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:39:37,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:39:37,743 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:39:37,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-11-13 01:39:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:41,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:39:41,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:39:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 360 proven. 57 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2021-11-13 01:39:44,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2021-11-13 01:39:47,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:39:47,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214267150] [2021-11-13 01:39:47,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214267150] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:39:47,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2131932597] [2021-11-13 01:39:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:47,401 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:39:47,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:39:47,402 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:39:47,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2021-11-13 01:39:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:49,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:39:49,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:39:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 360 proven. 57 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2021-11-13 01:39:52,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2021-11-13 01:39:54,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2131932597] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:39:54,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500545705] [2021-11-13 01:39:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:54,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:39:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:39:54,197 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:39:54,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-11-13 01:39:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:55,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 01:39:55,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:39:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1710 trivial. 0 not checked. [2021-11-13 01:39:58,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1710 trivial. 0 not checked. [2021-11-13 01:40:01,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500545705] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:40:01,327 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:40:01,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [10, 10, 10, 10] total 28 [2021-11-13 01:40:01,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705064915] [2021-11-13 01:40:01,329 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:01,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:40:01,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:01,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:40:01,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2021-11-13 01:40:01,331 INFO L87 Difference]: Start difference. First operand 3402 states and 4522 transitions. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 10 states have internal predecessors, (268), 3 states have call successors, (111), 1 states have call predecessors, (111), 4 states have return successors, (111), 6 states have call predecessors, (111), 3 states have call successors, (111) [2021-11-13 01:40:04,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:04,775 INFO L93 Difference]: Finished difference Result 7117 states and 9499 transitions. [2021-11-13 01:40:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:40:04,776 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 10 states have internal predecessors, (268), 3 states have call successors, (111), 1 states have call predecessors, (111), 4 states have return successors, (111), 6 states have call predecessors, (111), 3 states have call successors, (111) Word has length 770 [2021-11-13 01:40:04,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:04,786 INFO L225 Difference]: With dead ends: 7117 [2021-11-13 01:40:04,786 INFO L226 Difference]: Without dead ends: 3732 [2021-11-13 01:40:04,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4619 GetRequests, 4589 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:40:04,792 INFO L933 BasicCegarLoop]: 2209 mSDtfsCounter, 656 mSDsluCounter, 19170 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1983.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 21379 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.39ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2090.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:04,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 21379 Invalid, 527 Unknown, 0 Unchecked, 26.39ms Time], IncrementalHoareTripleChecker [165 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 2090.60ms Time] [2021-11-13 01:40:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2021-11-13 01:40:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3396. [2021-11-13 01:40:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 2252 states have (on average 1.2007104795737122) internal successors, (2704), 2314 states have internal predecessors, (2704), 895 states have call successors, (895), 242 states have call predecessors, (895), 246 states have return successors, (907), 896 states have call predecessors, (907), 895 states have call successors, (907) [2021-11-13 01:40:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 4506 transitions. [2021-11-13 01:40:05,160 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 4506 transitions. Word has length 770 [2021-11-13 01:40:05,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:05,161 INFO L470 AbstractCegarLoop]: Abstraction has 3396 states and 4506 transitions. [2021-11-13 01:40:05,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 10 states have internal predecessors, (268), 3 states have call successors, (111), 1 states have call predecessors, (111), 4 states have return successors, (111), 6 states have call predecessors, (111), 3 states have call successors, (111) [2021-11-13 01:40:05,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 4506 transitions. [2021-11-13 01:40:05,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2021-11-13 01:40:05,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:05,173 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 14, 14, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:05,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:05,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-11-13 01:40:05,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (72)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:05,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:40:05,774 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:40:05,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1339624338, now seen corresponding path program 1 times [2021-11-13 01:40:05,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:05,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353081793] [2021-11-13 01:40:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:05,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:05,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:05,778 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:05,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-11-13 01:40:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:09,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:40:09,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 527 proven. 57 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2021-11-13 01:40:13,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:16,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1935 trivial. 0 not checked. [2021-11-13 01:40:16,296 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:16,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353081793] [2021-11-13 01:40:16,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353081793] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:40:16,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [749089904] [2021-11-13 01:40:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:16,297 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:40:16,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:40:16,297 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:40:16,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2021-11-13 01:40:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:17,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:40:17,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 527 proven. 57 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2021-11-13 01:40:21,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1935 trivial. 0 not checked. [2021-11-13 01:40:23,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [749089904] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:40:23,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422585703] [2021-11-13 01:40:23,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:23,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:40:23,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:40:23,815 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:40:23,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-13 01:40:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:25,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 01:40:25,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 718 proven. 0 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2021-11-13 01:40:28,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2021-11-13 01:40:31,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422585703] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:40:31,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 01:40:31,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 10, 10, 10, 5] total 24 [2021-11-13 01:40:31,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105832615] [2021-11-13 01:40:31,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:31,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:40:31,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:40:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-13 01:40:31,658 INFO L87 Difference]: Start difference. First operand 3396 states and 4506 transitions. Second operand has 5 states, 5 states have (on average 61.6) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (122), 2 states have call predecessors, (122), 3 states have return successors, (120), 3 states have call predecessors, (120), 2 states have call successors, (120) [2021-11-13 01:40:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:32,228 INFO L93 Difference]: Finished difference Result 6781 states and 9010 transitions. [2021-11-13 01:40:32,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:40:32,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (122), 2 states have call predecessors, (122), 3 states have return successors, (120), 3 states have call predecessors, (120), 2 states have call successors, (120) Word has length 801 [2021-11-13 01:40:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:32,239 INFO L225 Difference]: With dead ends: 6781 [2021-11-13 01:40:32,240 INFO L226 Difference]: Without dead ends: 3404 [2021-11-13 01:40:32,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4800 GetRequests, 4778 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-13 01:40:32,248 INFO L933 BasicCegarLoop]: 1969 mSDtfsCounter, 0 mSDsluCounter, 5903 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7872 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.69ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.25ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:32,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7872 Invalid, 11 Unknown, 0 Unchecked, 9.69ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 72.25ms Time] [2021-11-13 01:40:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2021-11-13 01:40:32,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3404. [2021-11-13 01:40:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3404 states, 2258 states have (on average 1.200177147918512) internal successors, (2710), 2320 states have internal predecessors, (2710), 895 states have call successors, (895), 242 states have call predecessors, (895), 248 states have return successors, (911), 898 states have call predecessors, (911), 895 states have call successors, (911) [2021-11-13 01:40:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 4516 transitions. [2021-11-13 01:40:32,708 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 4516 transitions. Word has length 801 [2021-11-13 01:40:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:32,709 INFO L470 AbstractCegarLoop]: Abstraction has 3404 states and 4516 transitions. [2021-11-13 01:40:32,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (122), 2 states have call predecessors, (122), 3 states have return successors, (120), 3 states have call predecessors, (120), 2 states have call successors, (120) [2021-11-13 01:40:32,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 4516 transitions. [2021-11-13 01:40:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2021-11-13 01:40:32,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:32,726 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 14, 14, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:32,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (75)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:32,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:33,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:33,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:40:33,326 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:40:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1398404169, now seen corresponding path program 1 times [2021-11-13 01:40:33,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:33,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587233947] [2021-11-13 01:40:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:33,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:33,331 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:33,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-11-13 01:40:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:36,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 3248 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:40:36,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 527 proven. 57 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2021-11-13 01:40:41,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1935 trivial. 0 not checked. [2021-11-13 01:40:44,113 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:44,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587233947] [2021-11-13 01:40:44,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587233947] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:40:44,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [925519958] [2021-11-13 01:40:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:44,113 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:40:44,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:40:44,114 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:40:44,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (78)] Waiting until timeout for monitored process [2021-11-13 01:40:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:45,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 3248 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:40:45,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 716 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2021-11-13 01:40:49,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1987 trivial. 0 not checked. [2021-11-13 01:40:51,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [925519958] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:40:51,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:40:51,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 10, 5] total 21 [2021-11-13 01:40:51,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95558274] [2021-11-13 01:40:51,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:51,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:40:51,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:51,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:40:51,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:40:51,155 INFO L87 Difference]: Start difference. First operand 3404 states and 4516 transitions. Second operand has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2021-11-13 01:40:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:51,826 INFO L93 Difference]: Finished difference Result 6803 states and 9046 transitions. [2021-11-13 01:40:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:40:51,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 811 [2021-11-13 01:40:51,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:51,842 INFO L225 Difference]: With dead ends: 6803 [2021-11-13 01:40:51,842 INFO L226 Difference]: Without dead ends: 3418 [2021-11-13 01:40:51,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3241 GetRequests, 3221 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-11-13 01:40:51,853 INFO L933 BasicCegarLoop]: 1968 mSDtfsCounter, 6 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7867 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.11ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.92ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:51,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7867 Invalid, 16 Unknown, 0 Unchecked, 9.11ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 102.92ms Time] [2021-11-13 01:40:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2021-11-13 01:40:52,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3410. [2021-11-13 01:40:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 2264 states have (on average 1.1996466431095407) internal successors, (2716), 2326 states have internal predecessors, (2716), 895 states have call successors, (895), 242 states have call predecessors, (895), 248 states have return successors, (911), 898 states have call predecessors, (911), 895 states have call successors, (911) [2021-11-13 01:40:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 4522 transitions. [2021-11-13 01:40:52,282 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 4522 transitions. Word has length 811 [2021-11-13 01:40:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:52,283 INFO L470 AbstractCegarLoop]: Abstraction has 3410 states and 4522 transitions. [2021-11-13 01:40:52,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2021-11-13 01:40:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 4522 transitions. [2021-11-13 01:40:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2021-11-13 01:40:52,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:52,296 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 14, 14, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:52,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (78)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:52,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:52,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:40:52,696 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:40:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2056325237, now seen corresponding path program 1 times [2021-11-13 01:40:52,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:52,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164034832] [2021-11-13 01:40:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:52,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:52,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:52,701 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:52,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-11-13 01:40:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:56,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 3252 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:40:56,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 527 proven. 57 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2021-11-13 01:41:00,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1935 trivial. 0 not checked. [2021-11-13 01:41:03,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:03,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164034832] [2021-11-13 01:41:03,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164034832] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:41:03,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [621249394] [2021-11-13 01:41:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:03,400 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:03,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:41:03,401 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:41:03,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (80)] Waiting until timeout for monitored process [2021-11-13 01:41:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:05,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 3252 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:41:05,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 527 proven. 57 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2021-11-13 01:41:08,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1935 trivial. 0 not checked. [2021-11-13 01:41:10,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [621249394] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:41:10,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432114250] [2021-11-13 01:41:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:10,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:41:10,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:41:10,937 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:41:10,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-11-13 01:41:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:12,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 3252 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 01:41:12,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 1293 trivial. 0 not checked. [2021-11-13 01:41:15,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2021-11-13 01:41:18,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432114250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:18,287 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:41:18,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 10, 10, 10] total 24 [2021-11-13 01:41:18,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003280461] [2021-11-13 01:41:18,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:18,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:18,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:18,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:18,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-13 01:41:18,290 INFO L87 Difference]: Start difference. First operand 3410 states and 4522 transitions. Second operand has 8 states, 8 states have (on average 44.375) internal successors, (355), 6 states have internal predecessors, (355), 2 states have call successors, (171), 2 states have call predecessors, (171), 4 states have return successors, (170), 4 states have call predecessors, (170), 2 states have call successors, (170) [2021-11-13 01:41:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:18,756 INFO L93 Difference]: Finished difference Result 6805 states and 9036 transitions. [2021-11-13 01:41:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:41:18,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 44.375) internal successors, (355), 6 states have internal predecessors, (355), 2 states have call successors, (171), 2 states have call predecessors, (171), 4 states have return successors, (170), 4 states have call predecessors, (170), 2 states have call successors, (170) Word has length 811 [2021-11-13 01:41:18,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:18,773 INFO L225 Difference]: With dead ends: 6805 [2021-11-13 01:41:18,773 INFO L226 Difference]: Without dead ends: 3414 [2021-11-13 01:41:18,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4860 GetRequests, 4838 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-13 01:41:18,784 INFO L933 BasicCegarLoop]: 1969 mSDtfsCounter, 0 mSDsluCounter, 7869 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9838 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.54ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:18,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9838 Invalid, 14 Unknown, 0 Unchecked, 9.51ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 83.54ms Time] [2021-11-13 01:41:18,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2021-11-13 01:41:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3414. [2021-11-13 01:41:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3414 states, 2268 states have (on average 1.199294532627866) internal successors, (2720), 2328 states have internal predecessors, (2720), 895 states have call successors, (895), 242 states have call predecessors, (895), 248 states have return successors, (911), 900 states have call predecessors, (911), 895 states have call successors, (911) [2021-11-13 01:41:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 4526 transitions. [2021-11-13 01:41:19,233 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 4526 transitions. Word has length 811 [2021-11-13 01:41:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:19,234 INFO L470 AbstractCegarLoop]: Abstraction has 3414 states and 4526 transitions. [2021-11-13 01:41:19,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 44.375) internal successors, (355), 6 states have internal predecessors, (355), 2 states have call successors, (171), 2 states have call predecessors, (171), 4 states have return successors, (170), 4 states have call predecessors, (170), 2 states have call successors, (170) [2021-11-13 01:41:19,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 4526 transitions. [2021-11-13 01:41:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2021-11-13 01:41:19,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:19,246 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 14, 14, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:19,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:19,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (80)] Ended with exit code 0 [2021-11-13 01:41:19,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2021-11-13 01:41:19,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:19,847 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:41:19,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:19,848 INFO L85 PathProgramCache]: Analyzing trace with hash 262089988, now seen corresponding path program 1 times [2021-11-13 01:41:19,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:19,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180325809] [2021-11-13 01:41:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:19,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:19,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:19,851 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:19,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-11-13 01:41:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:23,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 3317 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:41:23,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 527 proven. 57 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2021-11-13 01:41:27,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2021-11-13 01:41:30,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:30,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180325809] [2021-11-13 01:41:30,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180325809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:41:30,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2102555542] [2021-11-13 01:41:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:30,628 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:30,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:41:30,629 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:41:30,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (83)] Waiting until timeout for monitored process [2021-11-13 01:41:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:32,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 3317 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:41:32,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 527 proven. 57 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2021-11-13 01:41:35,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2021-11-13 01:41:37,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2102555542] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:41:37,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912305046] [2021-11-13 01:41:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:37,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:41:37,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:41:37,724 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:41:37,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-11-13 01:41:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:39,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 3317 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:41:39,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2021-11-13 01:41:48,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2021-11-13 01:41:52,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912305046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:52,031 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:41:52,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [10, 10, 10, 10] total 23 [2021-11-13 01:41:52,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143214167] [2021-11-13 01:41:52,033 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:52,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:41:52,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:52,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:41:52,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:41:52,035 INFO L87 Difference]: Start difference. First operand 3414 states and 4526 transitions. Second operand has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 5 states have internal predecessors, (458), 2 states have call successors, (231), 4 states have call predecessors, (231), 2 states have return successors, (228), 2 states have call predecessors, (228), 2 states have call successors, (228) [2021-11-13 01:41:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:52,698 INFO L93 Difference]: Finished difference Result 3414 states and 4526 transitions. [2021-11-13 01:41:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:41:52,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 5 states have internal predecessors, (458), 2 states have call successors, (231), 4 states have call predecessors, (231), 2 states have return successors, (228), 2 states have call predecessors, (228), 2 states have call successors, (228) Word has length 821 [2021-11-13 01:41:52,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:52,710 INFO L225 Difference]: With dead ends: 3414 [2021-11-13 01:41:52,710 INFO L226 Difference]: Without dead ends: 3412 [2021-11-13 01:41:52,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4922 GetRequests, 4899 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:41:52,713 INFO L933 BasicCegarLoop]: 1966 mSDtfsCounter, 1448 mSDsluCounter, 5920 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 7886 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.66ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.81ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:52,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 7886 Invalid, 8 Unknown, 0 Unchecked, 10.66ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 35.81ms Time] [2021-11-13 01:41:52,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2021-11-13 01:41:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3412. [2021-11-13 01:41:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 2267 states have (on average 1.1985002205558006) internal successors, (2717), 2326 states have internal predecessors, (2717), 895 states have call successors, (895), 242 states have call predecessors, (895), 248 states have return successors, (911), 900 states have call predecessors, (911), 895 states have call successors, (911) [2021-11-13 01:41:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 4523 transitions. [2021-11-13 01:41:53,165 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 4523 transitions. Word has length 821 [2021-11-13 01:41:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:53,166 INFO L470 AbstractCegarLoop]: Abstraction has 3412 states and 4523 transitions. [2021-11-13 01:41:53,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 5 states have internal predecessors, (458), 2 states have call successors, (231), 4 states have call predecessors, (231), 2 states have return successors, (228), 2 states have call predecessors, (228), 2 states have call successors, (228) [2021-11-13 01:41:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 4523 transitions. [2021-11-13 01:41:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2021-11-13 01:41:53,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:53,179 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 14, 14, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:53,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (83)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:53,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2021-11-13 01:41:53,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:53,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:41:53,780 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:41:53,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:53,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1386109088, now seen corresponding path program 1 times [2021-11-13 01:41:53,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:53,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712993735] [2021-11-13 01:41:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:53,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:53,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:53,784 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:53,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-11-13 01:41:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:57,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 3346 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:41:57,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 527 proven. 57 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2021-11-13 01:42:01,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2021-11-13 01:42:04,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:04,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712993735] [2021-11-13 01:42:04,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712993735] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:04,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1689646815] [2021-11-13 01:42:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:04,129 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:42:04,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:42:04,131 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:42:04,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (86)] Waiting until timeout for monitored process [2021-11-13 01:42:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:05,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 3346 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:42:05,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 527 proven. 57 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2021-11-13 01:42:09,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2021-11-13 01:42:11,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1689646815] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:11,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814065595] [2021-11-13 01:42:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:11,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:42:11,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:42:11,721 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:42:11,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-11-13 01:42:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:13,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 3346 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:42:13,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2021-11-13 01:42:15,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2021-11-13 01:42:17,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814065595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:17,213 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:42:17,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 10, 10, 10] total 24 [2021-11-13 01:42:17,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238518511] [2021-11-13 01:42:17,215 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:17,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:42:17,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:42:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-13 01:42:17,217 INFO L87 Difference]: Start difference. First operand 3412 states and 4523 transitions. Second operand has 8 states, 8 states have (on average 36.125) internal successors, (289), 6 states have internal predecessors, (289), 3 states have call successors, (120), 5 states have call predecessors, (120), 3 states have return successors, (117), 3 states have call predecessors, (117), 1 states have call successors, (117) [2021-11-13 01:42:19,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:21,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:22,093 INFO L93 Difference]: Finished difference Result 3412 states and 4523 transitions. [2021-11-13 01:42:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:42:22,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.125) internal successors, (289), 6 states have internal predecessors, (289), 3 states have call successors, (120), 5 states have call predecessors, (120), 3 states have return successors, (117), 3 states have call predecessors, (117), 1 states have call successors, (117) Word has length 833 [2021-11-13 01:42:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:22,103 INFO L225 Difference]: With dead ends: 3412 [2021-11-13 01:42:22,103 INFO L226 Difference]: Without dead ends: 3410 [2021-11-13 01:42:22,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4994 GetRequests, 4970 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-11-13 01:42:22,106 INFO L933 BasicCegarLoop]: 1964 mSDtfsCounter, 22 mSDsluCounter, 11730 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4168.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 13694 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4176.73ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:22,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 13694 Invalid, 11 Unknown, 0 Unchecked, 11.65ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 4176.73ms Time] [2021-11-13 01:42:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2021-11-13 01:42:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3410. [2021-11-13 01:42:22,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 2266 states have (on average 1.1977052074139454) internal successors, (2714), 2324 states have internal predecessors, (2714), 895 states have call successors, (895), 242 states have call predecessors, (895), 248 states have return successors, (911), 900 states have call predecessors, (911), 895 states have call successors, (911) [2021-11-13 01:42:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 4520 transitions. [2021-11-13 01:42:22,560 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 4520 transitions. Word has length 833 [2021-11-13 01:42:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:22,561 INFO L470 AbstractCegarLoop]: Abstraction has 3410 states and 4520 transitions. [2021-11-13 01:42:22,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.125) internal successors, (289), 6 states have internal predecessors, (289), 3 states have call successors, (120), 5 states have call predecessors, (120), 3 states have return successors, (117), 3 states have call predecessors, (117), 1 states have call successors, (117) [2021-11-13 01:42:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 4520 transitions. [2021-11-13 01:42:22,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2021-11-13 01:42:22,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:22,573 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 14, 14, 14, 14, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:22,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:22,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-11-13 01:42:23,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (86)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:23,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:42:23,199 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:42:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:23,199 INFO L85 PathProgramCache]: Analyzing trace with hash 736338225, now seen corresponding path program 1 times [2021-11-13 01:42:23,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:23,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981923629] [2021-11-13 01:42:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:23,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:23,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:23,205 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:23,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-11-13 01:42:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:26,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 3299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:42:26,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 518 proven. 57 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2021-11-13 01:42:31,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2021-11-13 01:42:34,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:34,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981923629] [2021-11-13 01:42:34,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981923629] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:34,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [510618231] [2021-11-13 01:42:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:34,036 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:42:34,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:42:34,043 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:42:34,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (89)] Waiting until timeout for monitored process [2021-11-13 01:42:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:35,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 3299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:42:35,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 518 proven. 57 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2021-11-13 01:42:39,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2021-11-13 01:42:42,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [510618231] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:42,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49698399] [2021-11-13 01:42:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:42,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:42:42,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:42:42,087 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:42:42,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-11-13 01:42:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:44,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 3299 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:42:44,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 739 proven. 0 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2021-11-13 01:42:47,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1960 trivial. 0 not checked. [2021-11-13 01:42:49,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49698399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:49,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:42:49,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10, 10, 10, 10] total 20 [2021-11-13 01:42:49,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356013987] [2021-11-13 01:42:49,440 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:49,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:42:49,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:49,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:42:49,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:42:49,442 INFO L87 Difference]: Start difference. First operand 3410 states and 4520 transitions. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 2 states have call successors, (185), 2 states have call predecessors, (185), 2 states have return successors, (185), 2 states have call predecessors, (185), 2 states have call successors, (185) [2021-11-13 01:42:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:50,888 INFO L93 Difference]: Finished difference Result 7803 states and 10434 transitions. [2021-11-13 01:42:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:42:50,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 2 states have call successors, (185), 2 states have call predecessors, (185), 2 states have return successors, (185), 2 states have call predecessors, (185), 2 states have call successors, (185) Word has length 832 [2021-11-13 01:42:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:50,905 INFO L225 Difference]: With dead ends: 7803 [2021-11-13 01:42:50,905 INFO L226 Difference]: Without dead ends: 4412 [2021-11-13 01:42:50,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4986 GetRequests, 4968 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:42:50,914 INFO L933 BasicCegarLoop]: 2316 mSDtfsCounter, 542 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 601.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 6439 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.89ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 647.71ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:50,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 6439 Invalid, 97 Unknown, 0 Unchecked, 9.89ms Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 647.71ms Time] [2021-11-13 01:42:50,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4412 states. [2021-11-13 01:42:51,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4412 to 3416. [2021-11-13 01:42:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3416 states, 2271 states have (on average 1.197710259797446) internal successors, (2720), 2329 states have internal predecessors, (2720), 896 states have call successors, (896), 242 states have call predecessors, (896), 248 states have return successors, (912), 901 states have call predecessors, (912), 896 states have call successors, (912) [2021-11-13 01:42:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 4528 transitions. [2021-11-13 01:42:51,412 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 4528 transitions. Word has length 832 [2021-11-13 01:42:51,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:51,413 INFO L470 AbstractCegarLoop]: Abstraction has 3416 states and 4528 transitions. [2021-11-13 01:42:51,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 2 states have call successors, (185), 2 states have call predecessors, (185), 2 states have return successors, (185), 2 states have call predecessors, (185), 2 states have call successors, (185) [2021-11-13 01:42:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 4528 transitions. [2021-11-13 01:42:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2021-11-13 01:42:51,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:51,426 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 17, 17, 17, 17, 17, 15, 15, 14, 14, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:51,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:51,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (89)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:51,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-11-13 01:42:52,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:42:52,028 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 01:42:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:52,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1787989960, now seen corresponding path program 1 times [2021-11-13 01:42:52,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:52,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816192445] [2021-11-13 01:42:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:52,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:52,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:52,033 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:52,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-11-13 01:42:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:56,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 3789 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:42:56,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3090 backedges. 712 proven. 57 refuted. 0 times theorem prover too weak. 2321 trivial. 0 not checked. [2021-11-13 01:43:01,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3090 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 3033 trivial. 0 not checked. [2021-11-13 01:43:04,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:04,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816192445] [2021-11-13 01:43:04,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816192445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:43:04,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [780848715] [2021-11-13 01:43:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:04,964 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:43:04,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:43:04,965 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:43:04,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (92)] Waiting until timeout for monitored process [2021-11-13 01:43:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:06,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 3789 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:43:06,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3090 backedges. 712 proven. 57 refuted. 0 times theorem prover too weak. 2321 trivial. 0 not checked. [2021-11-13 01:43:11,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3090 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 3033 trivial. 0 not checked. [2021-11-13 01:43:14,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [780848715] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:43:14,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460601277] [2021-11-13 01:43:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:14,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:43:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:43:14,061 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:43:14,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f8f5e-4c02-40f5-a978-75e8dc6dcd48/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-11-13 01:43:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:15,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 3789 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:43:15,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3090 backedges. 1007 proven. 0 refuted. 0 times theorem prover too weak. 2083 trivial. 0 not checked. [2021-11-13 01:43:19,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3090 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3090 trivial. 0 not checked. [2021-11-13 01:43:22,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460601277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:22,743 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:43:22,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [10, 10, 10, 10] total 26 [2021-11-13 01:43:22,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506763250] [2021-11-13 01:43:22,745 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:22,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:43:22,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:43:22,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-11-13 01:43:22,747 INFO L87 Difference]: Start difference. First operand 3416 states and 4528 transitions. Second operand has 10 states, 10 states have (on average 45.1) internal successors, (451), 10 states have internal predecessors, (451), 4 states have call successors, (203), 2 states have call predecessors, (203), 2 states have return successors, (203), 4 states have call predecessors, (203), 4 states have call successors, (203)