./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--video--fbdev--udlfb.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_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/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_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/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_5af8be25-8848-43f3-b7ba-55841e58663e/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 81dbe8069ce4dfce1c2f5ecd6b7071863ebf3cc1894dcf2fe187946b9d9f58fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:15:40,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:15:40,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:15:40,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:15:40,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:15:40,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:15:40,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:15:40,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:15:40,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:15:40,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:15:40,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:15:40,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:15:40,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:15:40,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:15:40,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:15:40,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:15:40,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:15:40,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:15:40,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:15:40,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:15:40,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:15:40,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:15:40,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:15:40,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:15:40,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:15:40,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:15:40,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:15:40,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:15:40,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:15:40,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:15:40,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:15:40,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:15:40,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:15:40,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:15:40,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:15:40,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:15:40,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:15:40,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:15:40,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:15:40,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:15:40,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:15:40,558 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:15:40,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:15:40,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:15:40,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:15:40,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:15:40,606 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:15:40,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:15:40,607 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:15:40,607 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:15:40,608 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:15:40,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:15:40,608 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:15:40,609 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:15:40,609 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:15:40,609 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:15:40,610 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:15:40,610 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:15:40,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:15:40,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:15:40,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:15:40,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:15:40,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:15:40,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:15:40,613 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:15:40,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:15:40,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:15:40,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:15:40,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:15:40,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:15:40,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:15:40,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:15:40,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:15:40,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:15:40,623 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:15:40,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:15:40,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:15:40,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:15:40,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:15:40,625 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_5af8be25-8848-43f3-b7ba-55841e58663e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81dbe8069ce4dfce1c2f5ecd6b7071863ebf3cc1894dcf2fe187946b9d9f58fb [2021-11-12 23:15:40,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:15:41,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:15:41,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:15:41,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:15:41,026 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:15:41,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i [2021-11-12 23:15:41,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/data/d63de14cc/e5de6627f5d84af7b9197056d57887ce/FLAG22bcde4b6 [2021-11-12 23:15:42,424 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:15:42,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i [2021-11-12 23:15:42,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/data/d63de14cc/e5de6627f5d84af7b9197056d57887ce/FLAG22bcde4b6 [2021-11-12 23:15:42,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/data/d63de14cc/e5de6627f5d84af7b9197056d57887ce [2021-11-12 23:15:42,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:15:42,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:15:42,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:15:42,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:15:42,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:15:42,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:15:42" (1/1) ... [2021-11-12 23:15:42,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1735fa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:42, skipping insertion in model container [2021-11-12 23:15:42,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:15:42" (1/1) ... [2021-11-12 23:15:42,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:15:42,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:15:45,330 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,331 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,362 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,405 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,447 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,456 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,464 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,471 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,479 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,501 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,512 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,514 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,522 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,524 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,533 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,562 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,571 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,593 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,594 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,609 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,645 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,645 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,655 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,656 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,663 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,664 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,671 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,672 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,680 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,680 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,689 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,690 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,698 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,698 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,724 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,725 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,742 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,786 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,804 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:45,810 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,158 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,159 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,159 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,160 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,161 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,162 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,162 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,163 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,163 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,234 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,248 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,249 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,252 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,254 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,257 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,269 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,269 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,270 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,602 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:46,609 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:47,252 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:47,252 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:48,076 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375016,375029] [2021-11-12 23:15:48,080 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375161,375174] [2021-11-12 23:15:48,081 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375307,375320] [2021-11-12 23:15:48,082 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375472,375485] [2021-11-12 23:15:48,083 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375630,375643] [2021-11-12 23:15:48,084 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375788,375801] [2021-11-12 23:15:48,084 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375946,375959] [2021-11-12 23:15:48,085 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376106,376119] [2021-11-12 23:15:48,086 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376265,376278] [2021-11-12 23:15:48,087 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376404,376417] [2021-11-12 23:15:48,087 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376546,376559] [2021-11-12 23:15:48,088 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376695,376708] [2021-11-12 23:15:48,089 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376834,376847] [2021-11-12 23:15:48,089 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376989,377002] [2021-11-12 23:15:48,090 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377149,377162] [2021-11-12 23:15:48,091 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377300,377313] [2021-11-12 23:15:48,091 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377451,377464] [2021-11-12 23:15:48,092 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377603,377616] [2021-11-12 23:15:48,093 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377752,377765] [2021-11-12 23:15:48,093 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377900,377913] [2021-11-12 23:15:48,094 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378057,378070] [2021-11-12 23:15:48,095 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378206,378219] [2021-11-12 23:15:48,096 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378362,378375] [2021-11-12 23:15:48,096 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378515,378528] [2021-11-12 23:15:48,097 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378661,378674] [2021-11-12 23:15:48,098 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378804,378817] [2021-11-12 23:15:48,098 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378956,378969] [2021-11-12 23:15:48,099 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379102,379115] [2021-11-12 23:15:48,100 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379247,379260] [2021-11-12 23:15:48,100 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379401,379414] [2021-11-12 23:15:48,101 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379552,379565] [2021-11-12 23:15:48,101 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379707,379720] [2021-11-12 23:15:48,102 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379859,379872] [2021-11-12 23:15:48,103 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380014,380027] [2021-11-12 23:15:48,103 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380178,380191] [2021-11-12 23:15:48,104 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380334,380347] [2021-11-12 23:15:48,104 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380498,380511] [2021-11-12 23:15:48,105 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380640,380653] [2021-11-12 23:15:48,106 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380798,380811] [2021-11-12 23:15:48,106 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380965,380978] [2021-11-12 23:15:48,107 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381124,381137] [2021-11-12 23:15:48,107 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381283,381296] [2021-11-12 23:15:48,108 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381432,381445] [2021-11-12 23:15:48,109 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381579,381592] [2021-11-12 23:15:48,109 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381718,381731] [2021-11-12 23:15:48,110 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381881,381894] [2021-11-12 23:15:48,110 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382047,382060] [2021-11-12 23:15:48,111 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382211,382224] [2021-11-12 23:15:48,112 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382376,382389] [2021-11-12 23:15:48,112 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382541,382554] [2021-11-12 23:15:48,113 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382707,382720] [2021-11-12 23:15:48,114 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382872,382885] [2021-11-12 23:15:48,115 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383039,383052] [2021-11-12 23:15:48,115 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383199,383212] [2021-11-12 23:15:48,116 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383361,383374] [2021-11-12 23:15:48,117 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383520,383533] [2021-11-12 23:15:48,117 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383666,383679] [2021-11-12 23:15:48,118 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383809,383822] [2021-11-12 23:15:48,119 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383953,383966] [2021-11-12 23:15:48,119 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384096,384109] [2021-11-12 23:15:48,120 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384240,384253] [2021-11-12 23:15:48,121 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384381,384394] [2021-11-12 23:15:48,121 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384519,384532] [2021-11-12 23:15:48,122 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384677,384690] [2021-11-12 23:15:48,159 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384836,384849] [2021-11-12 23:15:48,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384992,385005] [2021-11-12 23:15:48,161 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385141,385154] [2021-11-12 23:15:48,162 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385293,385306] [2021-11-12 23:15:48,162 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385444,385457] [2021-11-12 23:15:48,163 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385593,385606] [2021-11-12 23:15:48,164 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385745,385758] [2021-11-12 23:15:48,164 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385893,385906] [2021-11-12 23:15:48,165 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386046,386059] [2021-11-12 23:15:48,166 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386197,386210] [2021-11-12 23:15:48,166 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386347,386360] [2021-11-12 23:15:48,167 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386494,386507] [2021-11-12 23:15:48,167 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386645,386658] [2021-11-12 23:15:48,168 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386796,386809] [2021-11-12 23:15:48,169 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386944,386957] [2021-11-12 23:15:48,169 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387110,387123] [2021-11-12 23:15:48,170 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387279,387292] [2021-11-12 23:15:48,171 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387446,387459] [2021-11-12 23:15:48,171 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387614,387627] [2021-11-12 23:15:48,172 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387764,387777] [2021-11-12 23:15:48,172 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387911,387924] [2021-11-12 23:15:48,173 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388072,388085] [2021-11-12 23:15:48,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388242,388255] [2021-11-12 23:15:48,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388404,388417] [2021-11-12 23:15:48,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:15:48,243 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) [2021-11-12 23:15:48,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54c080b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:48, skipping insertion in model container [2021-11-12 23:15:48,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:15:48,245 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:15:48,247 INFO L158 Benchmark]: Toolchain (without parser) took 5675.82ms. Allocated memory was 94.4MB in the beginning and 169.9MB in the end (delta: 75.5MB). Free memory was 62.5MB in the beginning and 117.2MB in the end (delta: -54.7MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2021-11-12 23:15:48,248 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 66.1MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:15:48,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5672.84ms. Allocated memory was 94.4MB in the beginning and 169.9MB in the end (delta: 75.5MB). Free memory was 62.1MB in the beginning and 117.2MB in the end (delta: -55.1MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2021-11-12 23:15:48,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 66.1MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5672.84ms. Allocated memory was 94.4MB in the beginning and 169.9MB in the end (delta: 75.5MB). Free memory was 62.1MB in the beginning and 117.2MB in the end (delta: -55.1MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5208]: 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_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/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_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/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_5af8be25-8848-43f3-b7ba-55841e58663e/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 81dbe8069ce4dfce1c2f5ecd6b7071863ebf3cc1894dcf2fe187946b9d9f58fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:15:51,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:15:51,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:15:51,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:15:51,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:15:51,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:15:51,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:15:51,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:15:51,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:15:51,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:15:51,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:15:51,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:15:51,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:15:51,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:15:51,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:15:51,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:15:51,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:15:51,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:15:51,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:15:51,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:15:51,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:15:51,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:15:51,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:15:51,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:15:51,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:15:51,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:15:51,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:15:51,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:15:51,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:15:51,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:15:51,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:15:51,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:15:51,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:15:51,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:15:51,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:15:51,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:15:51,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:15:51,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:15:51,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:15:51,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:15:51,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:15:51,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:15:51,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:15:51,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:15:51,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:15:51,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:15:51,545 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:15:51,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:15:51,546 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:15:51,546 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:15:51,546 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:15:51,546 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:15:51,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:15:51,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:15:51,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:15:51,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:15:51,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:15:51,551 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:15:51,551 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:15:51,551 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:15:51,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:15:51,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:15:51,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:15:51,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:15:51,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:15:51,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:15:51,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:15:51,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:15:51,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:15:51,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:15:51,554 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:15:51,554 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:15:51,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:15:51,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:15:51,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:15:51,555 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_5af8be25-8848-43f3-b7ba-55841e58663e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81dbe8069ce4dfce1c2f5ecd6b7071863ebf3cc1894dcf2fe187946b9d9f58fb [2021-11-12 23:15:52,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:15:52,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:15:52,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:15:52,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:15:52,089 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:15:52,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i [2021-11-12 23:15:52,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/data/481423427/a2f63c2341104d6f8efbabe2929ffcab/FLAGbac64d0f8 [2021-11-12 23:15:53,478 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:15:53,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i [2021-11-12 23:15:53,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/data/481423427/a2f63c2341104d6f8efbabe2929ffcab/FLAGbac64d0f8 [2021-11-12 23:15:53,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/data/481423427/a2f63c2341104d6f8efbabe2929ffcab [2021-11-12 23:15:53,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:15:53,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:15:53,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:15:53,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:15:53,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:15:53,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:15:53" (1/1) ... [2021-11-12 23:15:53,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37123bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:53, skipping insertion in model container [2021-11-12 23:15:53,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:15:53" (1/1) ... [2021-11-12 23:15:53,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:15:53,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:15:59,111 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375016,375029] [2021-11-12 23:15:59,115 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375161,375174] [2021-11-12 23:15:59,116 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375307,375320] [2021-11-12 23:15:59,117 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375472,375485] [2021-11-12 23:15:59,118 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375630,375643] [2021-11-12 23:15:59,118 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375788,375801] [2021-11-12 23:15:59,119 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375946,375959] [2021-11-12 23:15:59,120 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376106,376119] [2021-11-12 23:15:59,121 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376265,376278] [2021-11-12 23:15:59,121 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376404,376417] [2021-11-12 23:15:59,122 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376546,376559] [2021-11-12 23:15:59,123 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376695,376708] [2021-11-12 23:15:59,123 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376834,376847] [2021-11-12 23:15:59,124 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376989,377002] [2021-11-12 23:15:59,125 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377149,377162] [2021-11-12 23:15:59,126 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377300,377313] [2021-11-12 23:15:59,126 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377451,377464] [2021-11-12 23:15:59,127 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377603,377616] [2021-11-12 23:15:59,128 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377752,377765] [2021-11-12 23:15:59,128 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377900,377913] [2021-11-12 23:15:59,129 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378057,378070] [2021-11-12 23:15:59,130 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378206,378219] [2021-11-12 23:15:59,131 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378362,378375] [2021-11-12 23:15:59,131 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378515,378528] [2021-11-12 23:15:59,132 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378661,378674] [2021-11-12 23:15:59,133 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378804,378817] [2021-11-12 23:15:59,134 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378956,378969] [2021-11-12 23:15:59,134 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379102,379115] [2021-11-12 23:15:59,135 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379247,379260] [2021-11-12 23:15:59,136 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379401,379414] [2021-11-12 23:15:59,136 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379552,379565] [2021-11-12 23:15:59,137 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379707,379720] [2021-11-12 23:15:59,146 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379859,379872] [2021-11-12 23:15:59,146 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380014,380027] [2021-11-12 23:15:59,147 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380178,380191] [2021-11-12 23:15:59,148 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380334,380347] [2021-11-12 23:15:59,149 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380498,380511] [2021-11-12 23:15:59,149 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380640,380653] [2021-11-12 23:15:59,150 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380798,380811] [2021-11-12 23:15:59,150 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380965,380978] [2021-11-12 23:15:59,151 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381124,381137] [2021-11-12 23:15:59,152 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381283,381296] [2021-11-12 23:15:59,152 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381432,381445] [2021-11-12 23:15:59,153 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381579,381592] [2021-11-12 23:15:59,153 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381718,381731] [2021-11-12 23:15:59,155 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381881,381894] [2021-11-12 23:15:59,156 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382047,382060] [2021-11-12 23:15:59,158 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382211,382224] [2021-11-12 23:15:59,159 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382376,382389] [2021-11-12 23:15:59,159 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382541,382554] [2021-11-12 23:15:59,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382707,382720] [2021-11-12 23:15:59,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382872,382885] [2021-11-12 23:15:59,161 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383039,383052] [2021-11-12 23:15:59,162 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383199,383212] [2021-11-12 23:15:59,162 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383361,383374] [2021-11-12 23:15:59,163 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383520,383533] [2021-11-12 23:15:59,163 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383666,383679] [2021-11-12 23:15:59,164 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383809,383822] [2021-11-12 23:15:59,165 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383953,383966] [2021-11-12 23:15:59,166 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384096,384109] [2021-11-12 23:15:59,166 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384240,384253] [2021-11-12 23:15:59,167 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384381,384394] [2021-11-12 23:15:59,168 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384519,384532] [2021-11-12 23:15:59,168 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384677,384690] [2021-11-12 23:15:59,169 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384836,384849] [2021-11-12 23:15:59,170 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384992,385005] [2021-11-12 23:15:59,171 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385141,385154] [2021-11-12 23:15:59,171 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385293,385306] [2021-11-12 23:15:59,172 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385444,385457] [2021-11-12 23:15:59,172 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385593,385606] [2021-11-12 23:15:59,173 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385745,385758] [2021-11-12 23:15:59,173 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385893,385906] [2021-11-12 23:15:59,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386046,386059] [2021-11-12 23:15:59,175 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386197,386210] [2021-11-12 23:15:59,175 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386347,386360] [2021-11-12 23:15:59,176 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386494,386507] [2021-11-12 23:15:59,176 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386645,386658] [2021-11-12 23:15:59,177 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386796,386809] [2021-11-12 23:15:59,177 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386944,386957] [2021-11-12 23:15:59,178 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387110,387123] [2021-11-12 23:15:59,180 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387279,387292] [2021-11-12 23:15:59,181 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387446,387459] [2021-11-12 23:15:59,181 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387614,387627] [2021-11-12 23:15:59,182 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387764,387777] [2021-11-12 23:15:59,182 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387911,387924] [2021-11-12 23:15:59,183 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388072,388085] [2021-11-12 23:15:59,184 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388242,388255] [2021-11-12 23:15:59,185 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388404,388417] [2021-11-12 23:15:59,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:15:59,290 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:15:59,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:15:59,990 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375016,375029] [2021-11-12 23:15:59,990 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375161,375174] [2021-11-12 23:15:59,991 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375307,375320] [2021-11-12 23:15:59,992 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375472,375485] [2021-11-12 23:15:59,992 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375630,375643] [2021-11-12 23:15:59,993 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375788,375801] [2021-11-12 23:15:59,993 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375946,375959] [2021-11-12 23:15:59,994 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376106,376119] [2021-11-12 23:15:59,995 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376265,376278] [2021-11-12 23:15:59,995 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376404,376417] [2021-11-12 23:15:59,996 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376546,376559] [2021-11-12 23:15:59,996 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376695,376708] [2021-11-12 23:15:59,997 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376834,376847] [2021-11-12 23:15:59,997 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376989,377002] [2021-11-12 23:15:59,998 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377149,377162] [2021-11-12 23:15:59,999 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377300,377313] [2021-11-12 23:15:59,999 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377451,377464] [2021-11-12 23:16:00,000 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377603,377616] [2021-11-12 23:16:00,000 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377752,377765] [2021-11-12 23:16:00,001 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377900,377913] [2021-11-12 23:16:00,001 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378057,378070] [2021-11-12 23:16:00,002 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378206,378219] [2021-11-12 23:16:00,003 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378362,378375] [2021-11-12 23:16:00,003 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378515,378528] [2021-11-12 23:16:00,004 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378661,378674] [2021-11-12 23:16:00,004 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378804,378817] [2021-11-12 23:16:00,005 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378956,378969] [2021-11-12 23:16:00,005 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379102,379115] [2021-11-12 23:16:00,006 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379247,379260] [2021-11-12 23:16:00,006 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379401,379414] [2021-11-12 23:16:00,007 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379552,379565] [2021-11-12 23:16:00,007 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379707,379720] [2021-11-12 23:16:00,008 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379859,379872] [2021-11-12 23:16:00,009 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380014,380027] [2021-11-12 23:16:00,009 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380178,380191] [2021-11-12 23:16:00,010 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380334,380347] [2021-11-12 23:16:00,010 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380498,380511] [2021-11-12 23:16:00,011 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380640,380653] [2021-11-12 23:16:00,011 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380798,380811] [2021-11-12 23:16:00,012 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380965,380978] [2021-11-12 23:16:00,013 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381124,381137] [2021-11-12 23:16:00,013 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381283,381296] [2021-11-12 23:16:00,014 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381432,381445] [2021-11-12 23:16:00,014 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_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381579,381592] [2021-11-12 23:16:00,015 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381718,381731] [2021-11-12 23:16:00,016 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381881,381894] [2021-11-12 23:16:00,016 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382047,382060] [2021-11-12 23:16:00,017 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382211,382224] [2021-11-12 23:16:00,017 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382376,382389] [2021-11-12 23:16:00,018 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382541,382554] [2021-11-12 23:16:00,018 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382707,382720] [2021-11-12 23:16:00,019 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382872,382885] [2021-11-12 23:16:00,019 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383039,383052] [2021-11-12 23:16:00,020 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383199,383212] [2021-11-12 23:16:00,021 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383361,383374] [2021-11-12 23:16:00,021 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383520,383533] [2021-11-12 23:16:00,022 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383666,383679] [2021-11-12 23:16:00,022 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383809,383822] [2021-11-12 23:16:00,023 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383953,383966] [2021-11-12 23:16:00,024 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384096,384109] [2021-11-12 23:16:00,024 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384240,384253] [2021-11-12 23:16:00,025 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384381,384394] [2021-11-12 23:16:00,025 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384519,384532] [2021-11-12 23:16:00,026 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384677,384690] [2021-11-12 23:16:00,026 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384836,384849] [2021-11-12 23:16:00,027 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384992,385005] [2021-11-12 23:16:00,027 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385141,385154] [2021-11-12 23:16:00,028 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385293,385306] [2021-11-12 23:16:00,028 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385444,385457] [2021-11-12 23:16:00,029 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385593,385606] [2021-11-12 23:16:00,029 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385745,385758] [2021-11-12 23:16:00,030 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385893,385906] [2021-11-12 23:16:00,031 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386046,386059] [2021-11-12 23:16:00,031 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386197,386210] [2021-11-12 23:16:00,032 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386347,386360] [2021-11-12 23:16:00,032 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386494,386507] [2021-11-12 23:16:00,033 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386645,386658] [2021-11-12 23:16:00,033 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386796,386809] [2021-11-12 23:16:00,034 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386944,386957] [2021-11-12 23:16:00,034 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387110,387123] [2021-11-12 23:16:00,035 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387279,387292] [2021-11-12 23:16:00,036 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387446,387459] [2021-11-12 23:16:00,036 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387614,387627] [2021-11-12 23:16:00,037 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387764,387777] [2021-11-12 23:16:00,037 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387911,387924] [2021-11-12 23:16:00,038 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388072,388085] [2021-11-12 23:16:00,038 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388242,388255] [2021-11-12 23:16:00,039 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388404,388417] [2021-11-12 23:16:00,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:00,065 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:16:00,543 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375016,375029] [2021-11-12 23:16:00,543 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375161,375174] [2021-11-12 23:16:00,544 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375307,375320] [2021-11-12 23:16:00,544 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375472,375485] [2021-11-12 23:16:00,545 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375630,375643] [2021-11-12 23:16:00,545 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375788,375801] [2021-11-12 23:16:00,546 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[375946,375959] [2021-11-12 23:16:00,546 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376106,376119] [2021-11-12 23:16:00,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376265,376278] [2021-11-12 23:16:00,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376404,376417] [2021-11-12 23:16:00,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376546,376559] [2021-11-12 23:16:00,548 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376695,376708] [2021-11-12 23:16:00,548 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376834,376847] [2021-11-12 23:16:00,549 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[376989,377002] [2021-11-12 23:16:00,549 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377149,377162] [2021-11-12 23:16:00,550 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377300,377313] [2021-11-12 23:16:00,551 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377451,377464] [2021-11-12 23:16:00,552 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377603,377616] [2021-11-12 23:16:00,552 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377752,377765] [2021-11-12 23:16:00,553 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[377900,377913] [2021-11-12 23:16:00,553 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378057,378070] [2021-11-12 23:16:00,554 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378206,378219] [2021-11-12 23:16:00,554 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378362,378375] [2021-11-12 23:16:00,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378515,378528] [2021-11-12 23:16:00,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378661,378674] [2021-11-12 23:16:00,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378804,378817] [2021-11-12 23:16:00,558 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[378956,378969] [2021-11-12 23:16:00,559 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379102,379115] [2021-11-12 23:16:00,559 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379247,379260] [2021-11-12 23:16:00,560 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379401,379414] [2021-11-12 23:16:00,560 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379552,379565] [2021-11-12 23:16:00,561 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379707,379720] [2021-11-12 23:16:00,561 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[379859,379872] [2021-11-12 23:16:00,561 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380014,380027] [2021-11-12 23:16:00,562 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380178,380191] [2021-11-12 23:16:00,562 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380334,380347] [2021-11-12 23:16:00,563 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380498,380511] [2021-11-12 23:16:00,563 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380640,380653] [2021-11-12 23:16:00,564 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380798,380811] [2021-11-12 23:16:00,565 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[380965,380978] [2021-11-12 23:16:00,567 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381124,381137] [2021-11-12 23:16:00,567 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381283,381296] [2021-11-12 23:16:00,568 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381432,381445] [2021-11-12 23:16:00,571 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381579,381592] [2021-11-12 23:16:00,571 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381718,381731] [2021-11-12 23:16:00,572 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[381881,381894] [2021-11-12 23:16:00,572 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382047,382060] [2021-11-12 23:16:00,573 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382211,382224] [2021-11-12 23:16:00,573 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382376,382389] [2021-11-12 23:16:00,573 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382541,382554] [2021-11-12 23:16:00,574 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382707,382720] [2021-11-12 23:16:00,575 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[382872,382885] [2021-11-12 23:16:00,576 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383039,383052] [2021-11-12 23:16:00,576 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383199,383212] [2021-11-12 23:16:00,577 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383361,383374] [2021-11-12 23:16:00,577 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383520,383533] [2021-11-12 23:16:00,578 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383666,383679] [2021-11-12 23:16:00,578 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383809,383822] [2021-11-12 23:16:00,578 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[383953,383966] [2021-11-12 23:16:00,579 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384096,384109] [2021-11-12 23:16:00,579 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384240,384253] [2021-11-12 23:16:00,580 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384381,384394] [2021-11-12 23:16:00,580 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384519,384532] [2021-11-12 23:16:00,581 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384677,384690] [2021-11-12 23:16:00,581 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384836,384849] [2021-11-12 23:16:00,582 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[384992,385005] [2021-11-12 23:16:00,582 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385141,385154] [2021-11-12 23:16:00,583 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385293,385306] [2021-11-12 23:16:00,583 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385444,385457] [2021-11-12 23:16:00,584 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385593,385606] [2021-11-12 23:16:00,585 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385745,385758] [2021-11-12 23:16:00,585 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[385893,385906] [2021-11-12 23:16:00,586 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386046,386059] [2021-11-12 23:16:00,586 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386197,386210] [2021-11-12 23:16:00,587 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386347,386360] [2021-11-12 23:16:00,588 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386494,386507] [2021-11-12 23:16:00,588 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386645,386658] [2021-11-12 23:16:00,589 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386796,386809] [2021-11-12 23:16:00,589 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[386944,386957] [2021-11-12 23:16:00,596 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387110,387123] [2021-11-12 23:16:00,601 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387279,387292] [2021-11-12 23:16:00,602 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387446,387459] [2021-11-12 23:16:00,603 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387614,387627] [2021-11-12 23:16:00,607 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387764,387777] [2021-11-12 23:16:00,608 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[387911,387924] [2021-11-12 23:16:00,608 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388072,388085] [2021-11-12 23:16:00,609 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388242,388255] [2021-11-12 23:16:00,609 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i[388404,388417] [2021-11-12 23:16:00,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:01,073 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:16:01,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01 WrapperNode [2021-11-12 23:16:01,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:01,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:16:01,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:16:01,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:16:01,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (1/1) ... [2021-11-12 23:16:01,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (1/1) ... [2021-11-12 23:16:01,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:16:01,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:16:01,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:16:01,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:16:01,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (1/1) ... [2021-11-12 23:16:01,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (1/1) ... [2021-11-12 23:16:01,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (1/1) ... [2021-11-12 23:16:01,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (1/1) ... [2021-11-12 23:16:02,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (1/1) ... [2021-11-12 23:16:02,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (1/1) ... [2021-11-12 23:16:02,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (1/1) ... [2021-11-12 23:16:02,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:16:02,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:16:02,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:16:02,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:16:02,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (1/1) ... [2021-11-12 23:16:02,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:16:02,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:02,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:16:02,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:16:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-12 23:16:02,342 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-12 23:16:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_urb_completion [2021-11-12 23:16:02,342 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_urb_completion [2021-11-12 23:16:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-12 23:16:02,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-12 23:16:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:16:02,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:16:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2021-11-12 23:16:02,343 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2021-11-12 23:16:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dummy_resourceless_instance_callback_5_23 [2021-11-12 23:16:02,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dummy_resourceless_instance_callback_5_23 [2021-11-12 23:16:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:16:02,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:16:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-12 23:16:02,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-12 23:16:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:16:02,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:16:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_lock_of_fb_info [2021-11-12 23:16:02,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_lock_of_fb_info [2021-11-12 23:16:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-12 23:16:02,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-12 23:16:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-12 23:16:02,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-12 23:16:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure metrics_reset_store [2021-11-12 23:16:02,346 INFO L138 BoogieDeclarations]: Found implementation of procedure metrics_reset_store [2021-11-12 23:16:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:16:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:16:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:16:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_urb_list [2021-11-12 23:16:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_urb_list [2021-11-12 23:16:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:16:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:16:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-12 23:16:02,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-12 23:16:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2021-11-12 23:16:02,348 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2021-11-12 23:16:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:16:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-11-12 23:16:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-11-12 23:16:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure fb_edid_to_monspecs [2021-11-12 23:16:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_edid_to_monspecs [2021-11-12 23:16:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:16:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:16:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:16:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:16:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-12 23:16:02,350 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-12 23:16:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_setup_modes [2021-11-12 23:16:02,350 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_setup_modes [2021-11-12 23:16:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-12 23:16:02,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-12 23:16:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-12 23:16:02,352 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-12 23:16:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_lock [2021-11-12 23:16:02,352 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_lock [2021-11-12 23:16:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-12 23:16:02,352 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-12 23:16:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-12 23:16:02,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-12 23:16:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:16:02,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:16:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-12 23:16:02,353 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-12 23:16:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-12 23:16:02,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-12 23:16:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-12 23:16:02,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-12 23:16:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-12 23:16:02,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-12 23:16:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2021-11-12 23:16:02,355 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2021-11-12 23:16:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:16:02,355 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:16:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-12 23:16:02,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-12 23:16:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_var_color_format [2021-11-12 23:16:02,356 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_var_color_format [2021-11-12 23:16:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 23:16:02,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 23:16:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-12 23:16:02,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-12 23:16:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-12 23:16:02,357 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-12 23:16:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-12 23:16:02,358 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-12 23:16:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-12 23:16:02,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-12 23:16:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-12 23:16:02,358 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-12 23:16:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-12 23:16:02,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-12 23:16:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:16:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_16 [2021-11-12 23:16:02,359 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_16 [2021-11-12 23:16:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:16:02,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:16:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:16:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:16:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:16:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:16:02,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:16:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:16:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-12 23:16:02,361 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-12 23:16:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register [2021-11-12 23:16:02,361 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register [2021-11-12 23:16:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-12 23:16:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-12 23:16:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-12 23:16:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-12 23:16:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2021-11-12 23:16:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2021-11-12 23:16:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-12 23:16:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-12 23:16:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:16:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:16:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-12 23:16:02,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-12 23:16:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-12 23:16:02,371 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-12 23:16:02,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_struct_fb_ops_dummy_resourceless_instance_5 [2021-11-12 23:16:02,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_struct_fb_ops_dummy_resourceless_instance_5 [2021-11-12 23:16:02,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:16:02,372 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-12 23:16:02,372 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-12 23:16:02,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:16:02,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:16:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:16:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-12 23:16:02,373 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-12 23:16:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_submit_urb [2021-11-12 23:16:02,373 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_submit_urb [2021-11-12 23:16:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:16:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:16:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:16:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:16:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:16:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:16:02,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:16:02,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:16:02,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:16:02,375 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_unlock [2021-11-12 23:16:02,375 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_unlock [2021-11-12 23:16:02,376 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_check_var [2021-11-12 23:16:02,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_check_var [2021-11-12 23:16:02,376 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_is_valid_mode [2021-11-12 23:16:02,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_is_valid_mode [2021-11-12 23:16:02,376 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_lfsr16 [2021-11-12 23:16:02,377 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_lfsr16 [2021-11-12 23:16:02,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 23:16:02,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 23:16:02,377 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2021-11-12 23:16:02,377 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2021-11-12 23:16:02,377 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-12 23:16:02,378 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-12 23:16:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 23:16:02,378 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 23:16:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:16:02,378 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:16:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_release [2021-11-12 23:16:02,379 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_release [2021-11-12 23:16:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_get_urb [2021-11-12 23:16:02,379 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_get_urb [2021-11-12 23:16:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_framebuffer_103 [2021-11-12 23:16:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_framebuffer_103 [2021-11-12 23:16:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_video_mode [2021-11-12 23:16:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_video_mode [2021-11-12 23:16:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-12 23:16:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-12 23:16:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-12 23:16:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-12 23:16:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_blank [2021-11-12 23:16:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_blank [2021-11-12 23:16:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-12 23:16:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-12 23:16:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:16:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-12 23:16:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-12 23:16:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-12 23:16:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-12 23:16:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycles [2021-11-12 23:16:02,383 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycles [2021-11-12 23:16:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-11-12 23:16:02,383 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-11-12 23:16:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:16:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2021-11-12 23:16:02,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2021-11-12 23:16:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:16:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:16:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:16:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:16:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:16:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-12 23:16:02,385 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-12 23:16:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-12 23:16:02,385 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-12 23:16:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-12 23:16:02,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-12 23:16:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-12 23:16:02,386 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-12 23:16:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:16:02,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:16:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-12 23:16:02,387 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-12 23:16:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 23:16:02,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 23:16:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-12 23:16:02,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-12 23:16:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-12 23:16:02,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-12 23:16:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-12 23:16:02,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-12 23:16:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-12 23:16:02,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-12 23:16:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2021-11-12 23:16:02,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2021-11-12 23:16:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-12 23:16:02,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-12 23:16:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-12 23:16:02,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-12 23:16:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:16:02,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:16:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-12 23:16:02,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-12 23:16:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 23:16:02,391 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 23:16:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-12 23:16:02,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-12 23:16:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_handle_damage [2021-11-12 23:16:02,392 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_handle_damage [2021-11-12 23:16:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_render_hline [2021-11-12 23:16:02,392 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_render_hline [2021-11-12 23:16:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2021-11-12 23:16:02,392 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2021-11-12 23:16:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-12 23:16:02,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-12 23:16:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:16:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure edid_show [2021-11-12 23:16:02,393 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_show [2021-11-12 23:16:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:16:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:16:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:16:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:16:02,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:16:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-12 23:16:02,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-12 23:16:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_blanking [2021-11-12 23:16:02,395 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_blanking [2021-11-12 23:16:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:16:02,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:16:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-12 23:16:02,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-12 23:16:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-12 23:16:02,396 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-12 23:16:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_register_13_2 [2021-11-12 23:16:02,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_register_13_2 [2021-11-12 23:16:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_framebuffer [2021-11-12 23:16:02,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_framebuffer [2021-11-12 23:16:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_set_par [2021-11-12 23:16:02,397 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_set_par [2021-11-12 23:16:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-12 23:16:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure edid_store [2021-11-12 23:16:02,398 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_store [2021-11-12 23:16:04,417 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:16:56,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:16:56,652 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:16:56,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:16:56 BoogieIcfgContainer [2021-11-12 23:16:56,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:16:56,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:16:56,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:16:56,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:16:56,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:15:53" (1/3) ... [2021-11-12 23:16:56,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399f2736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:16:56, skipping insertion in model container [2021-11-12 23:16:56,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:01" (2/3) ... [2021-11-12 23:16:56,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399f2736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:16:56, skipping insertion in model container [2021-11-12 23:16:56,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:16:56" (3/3) ... [2021-11-12 23:16:56,678 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--video--fbdev--udlfb.ko.cil.i [2021-11-12 23:16:56,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:16:56,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2021-11-12 23:16:56,785 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:16:56,793 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 [2021-11-12 23:16:56,793 INFO L340 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2021-11-12 23:16:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 1732 states, 1156 states have (on average 1.2655709342560553) internal successors, (1463), 1233 states have internal predecessors, (1463), 427 states have call successors, (427), 116 states have call predecessors, (427), 115 states have return successors, (419), 405 states have call predecessors, (419), 419 states have call successors, (419) [2021-11-12 23:16:56,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-12 23:16:56,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:56,895 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:56,895 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:16:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:56,903 INFO L85 PathProgramCache]: Analyzing trace with hash 804741773, now seen corresponding path program 1 times [2021-11-12 23:16:56,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:16:56,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589312319] [2021-11-12 23:16:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:56,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:16:56,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:16:56,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:16:56,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:16:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:59,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:16:59,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:00,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:01,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:01,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589312319] [2021-11-12 23:17:01,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589312319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:01,413 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:01,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:17:01,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303283036] [2021-11-12 23:17:01,417 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:01,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:17:01,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:01,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:17:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:17:01,480 INFO L87 Difference]: Start difference. First operand has 1732 states, 1156 states have (on average 1.2655709342560553) internal successors, (1463), 1233 states have internal predecessors, (1463), 427 states have call successors, (427), 116 states have call predecessors, (427), 115 states have return successors, (419), 405 states have call predecessors, (419), 419 states have call successors, (419) Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2021-11-12 23:17:01,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:01,980 INFO L93 Difference]: Finished difference Result 3414 states and 4675 transitions. [2021-11-12 23:17:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 71 [2021-11-12 23:17:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:02,034 INFO L225 Difference]: With dead ends: 3414 [2021-11-12 23:17:02,035 INFO L226 Difference]: Without dead ends: 1711 [2021-11-12 23:17:02,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:17:02,066 INFO L933 BasicCegarLoop]: 2266 mSDtfsCounter, 2214 mSDsluCounter, 4528 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 6794 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.51ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:02,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 6794 Invalid, 2 Unknown, 0 Unchecked, 72.44ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 15.51ms Time] [2021-11-12 23:17:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2021-11-12 23:17:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1711. [2021-11-12 23:17:02,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1146 states have (on average 1.2286212914485166) internal successors, (1408), 1215 states have internal predecessors, (1408), 419 states have call successors, (419), 115 states have call predecessors, (419), 114 states have return successors, (417), 403 states have call predecessors, (417), 417 states have call successors, (417) [2021-11-12 23:17:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2244 transitions. [2021-11-12 23:17:02,319 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2244 transitions. Word has length 71 [2021-11-12 23:17:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:02,321 INFO L470 AbstractCegarLoop]: Abstraction has 1711 states and 2244 transitions. [2021-11-12 23:17:02,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2021-11-12 23:17:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2244 transitions. [2021-11-12 23:17:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:17:02,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:02,328 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:02,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:02,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:02,543 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1676217783, now seen corresponding path program 1 times [2021-11-12 23:17:02,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:02,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823324574] [2021-11-12 23:17:02,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:02,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:02,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:02,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:02,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:17:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:04,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:17:04,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:05,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:06,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:06,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823324574] [2021-11-12 23:17:06,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823324574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:06,650 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:06,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:17:06,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461355087] [2021-11-12 23:17:06,651 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:06,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:17:06,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:06,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:17:06,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:17:06,655 INFO L87 Difference]: Start difference. First operand 1711 states and 2244 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-11-12 23:17:06,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:06,892 INFO L93 Difference]: Finished difference Result 1711 states and 2244 transitions. [2021-11-12 23:17:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:06,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 77 [2021-11-12 23:17:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:06,919 INFO L225 Difference]: With dead ends: 1711 [2021-11-12 23:17:06,919 INFO L226 Difference]: Without dead ends: 1709 [2021-11-12 23:17:06,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:17:06,923 INFO L933 BasicCegarLoop]: 2240 mSDtfsCounter, 2182 mSDsluCounter, 4476 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 6716 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:06,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2184 Valid, 6716 Invalid, 2 Unknown, 0 Unchecked, 28.72ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 15.56ms Time] [2021-11-12 23:17:06,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2021-11-12 23:17:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1709. [2021-11-12 23:17:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1145 states have (on average 1.227947598253275) internal successors, (1406), 1213 states have internal predecessors, (1406), 419 states have call successors, (419), 115 states have call predecessors, (419), 114 states have return successors, (417), 403 states have call predecessors, (417), 417 states have call successors, (417) [2021-11-12 23:17:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2242 transitions. [2021-11-12 23:17:07,088 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2242 transitions. Word has length 77 [2021-11-12 23:17:07,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:07,091 INFO L470 AbstractCegarLoop]: Abstraction has 1709 states and 2242 transitions. [2021-11-12 23:17:07,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-11-12 23:17:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2242 transitions. [2021-11-12 23:17:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-12 23:17:07,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:07,102 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:07,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:07,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:07,327 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:07,328 INFO L85 PathProgramCache]: Analyzing trace with hash -820059774, now seen corresponding path program 1 times [2021-11-12 23:17:07,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:07,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915571642] [2021-11-12 23:17:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:07,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:07,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:07,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:07,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:17:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:09,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:17:09,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:10,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:11,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:11,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915571642] [2021-11-12 23:17:11,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915571642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:11,127 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:11,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:17:11,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676979223] [2021-11-12 23:17:11,128 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:11,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:17:11,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:17:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:17:11,131 INFO L87 Difference]: Start difference. First operand 1709 states and 2242 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-12 23:17:11,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:11,430 INFO L93 Difference]: Finished difference Result 1709 states and 2242 transitions. [2021-11-12 23:17:11,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:11,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 83 [2021-11-12 23:17:11,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:11,448 INFO L225 Difference]: With dead ends: 1709 [2021-11-12 23:17:11,449 INFO L226 Difference]: Without dead ends: 1707 [2021-11-12 23:17:11,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:17:11,458 INFO L933 BasicCegarLoop]: 2238 mSDtfsCounter, 2177 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 4474 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:11,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2179 Valid, 4474 Invalid, 2 Unknown, 0 Unchecked, 20.21ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 19.04ms Time] [2021-11-12 23:17:11,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-11-12 23:17:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1707. [2021-11-12 23:17:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1144 states have (on average 1.2272727272727273) internal successors, (1404), 1211 states have internal predecessors, (1404), 419 states have call successors, (419), 115 states have call predecessors, (419), 114 states have return successors, (417), 403 states have call predecessors, (417), 417 states have call successors, (417) [2021-11-12 23:17:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2240 transitions. [2021-11-12 23:17:11,613 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2240 transitions. Word has length 83 [2021-11-12 23:17:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:11,617 INFO L470 AbstractCegarLoop]: Abstraction has 1707 states and 2240 transitions. [2021-11-12 23:17:11,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-12 23:17:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2240 transitions. [2021-11-12 23:17:11,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-12 23:17:11,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:11,628 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:11,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:11,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:11,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:11,844 INFO L85 PathProgramCache]: Analyzing trace with hash 540988092, now seen corresponding path program 1 times [2021-11-12 23:17:11,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:11,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791674463] [2021-11-12 23:17:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:11,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:11,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:11,849 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:11,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:17:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:13,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:17:13,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:14,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:15,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:15,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791674463] [2021-11-12 23:17:15,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791674463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:15,683 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:15,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:17:15,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711665247] [2021-11-12 23:17:15,684 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:15,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:17:15,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:15,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:17:15,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:17:15,686 INFO L87 Difference]: Start difference. First operand 1707 states and 2240 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-11-12 23:17:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:15,918 INFO L93 Difference]: Finished difference Result 1707 states and 2240 transitions. [2021-11-12 23:17:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:15,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 89 [2021-11-12 23:17:15,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:15,937 INFO L225 Difference]: With dead ends: 1707 [2021-11-12 23:17:15,937 INFO L226 Difference]: Without dead ends: 1705 [2021-11-12 23:17:15,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:17:15,940 INFO L933 BasicCegarLoop]: 2236 mSDtfsCounter, 2166 mSDsluCounter, 4468 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 6704 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:15,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2168 Valid, 6704 Invalid, 2 Unknown, 0 Unchecked, 25.14ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 13.73ms Time] [2021-11-12 23:17:15,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-11-12 23:17:16,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1705. [2021-11-12 23:17:16,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1143 states have (on average 1.226596675415573) internal successors, (1402), 1209 states have internal predecessors, (1402), 419 states have call successors, (419), 115 states have call predecessors, (419), 114 states have return successors, (417), 403 states have call predecessors, (417), 417 states have call successors, (417) [2021-11-12 23:17:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2238 transitions. [2021-11-12 23:17:16,081 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2238 transitions. Word has length 89 [2021-11-12 23:17:16,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:16,082 INFO L470 AbstractCegarLoop]: Abstraction has 1705 states and 2238 transitions. [2021-11-12 23:17:16,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-11-12 23:17:16,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2238 transitions. [2021-11-12 23:17:16,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-12 23:17:16,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:16,086 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:16,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:16,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:16,303 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:16,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:16,303 INFO L85 PathProgramCache]: Analyzing trace with hash 116386593, now seen corresponding path program 1 times [2021-11-12 23:17:16,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:16,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300856362] [2021-11-12 23:17:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:16,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:16,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:16,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:16,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:17:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:18,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:17:18,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:19,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:20,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:20,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300856362] [2021-11-12 23:17:20,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300856362] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:20,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:20,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:17:20,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299367481] [2021-11-12 23:17:20,286 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:20,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:17:20,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:20,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:17:20,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:17:20,289 INFO L87 Difference]: Start difference. First operand 1705 states and 2238 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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) [2021-11-12 23:17:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:20,534 INFO L93 Difference]: Finished difference Result 1705 states and 2238 transitions. [2021-11-12 23:17:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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 95 [2021-11-12 23:17:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:20,553 INFO L225 Difference]: With dead ends: 1705 [2021-11-12 23:17:20,553 INFO L226 Difference]: Without dead ends: 1703 [2021-11-12 23:17:20,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:17:20,556 INFO L933 BasicCegarLoop]: 2234 mSDtfsCounter, 2158 mSDsluCounter, 4464 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 6698 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:20,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2160 Valid, 6698 Invalid, 2 Unknown, 0 Unchecked, 24.08ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 14.64ms Time] [2021-11-12 23:17:20,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2021-11-12 23:17:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1703. [2021-11-12 23:17:20,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1142 states have (on average 1.2259194395796849) internal successors, (1400), 1207 states have internal predecessors, (1400), 419 states have call successors, (419), 115 states have call predecessors, (419), 114 states have return successors, (417), 403 states have call predecessors, (417), 417 states have call successors, (417) [2021-11-12 23:17:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2236 transitions. [2021-11-12 23:17:20,820 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2236 transitions. Word has length 95 [2021-11-12 23:17:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:20,823 INFO L470 AbstractCegarLoop]: Abstraction has 1703 states and 2236 transitions. [2021-11-12 23:17:20,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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) [2021-11-12 23:17:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2236 transitions. [2021-11-12 23:17:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-12 23:17:20,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:20,830 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:20,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:21,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:21,047 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1703073589, now seen corresponding path program 1 times [2021-11-12 23:17:21,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:21,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868569619] [2021-11-12 23:17:21,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:21,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:21,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:21,052 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:21,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:17:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:22,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:17:22,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:24,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:25,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:25,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868569619] [2021-11-12 23:17:25,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868569619] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:25,317 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:25,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:17:25,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817387926] [2021-11-12 23:17:25,318 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:25,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:17:25,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:25,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:17:25,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:17:25,322 INFO L87 Difference]: Start difference. First operand 1703 states and 2236 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-11-12 23:17:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:25,583 INFO L93 Difference]: Finished difference Result 1703 states and 2236 transitions. [2021-11-12 23:17:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:25,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-11-12 23:17:25,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:25,601 INFO L225 Difference]: With dead ends: 1703 [2021-11-12 23:17:25,601 INFO L226 Difference]: Without dead ends: 1701 [2021-11-12 23:17:25,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:17:25,604 INFO L933 BasicCegarLoop]: 2232 mSDtfsCounter, 2150 mSDsluCounter, 4460 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:25,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 6692 Invalid, 2 Unknown, 0 Unchecked, 23.67ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 15.97ms Time] [2021-11-12 23:17:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2021-11-12 23:17:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1701. [2021-11-12 23:17:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1141 states have (on average 1.2252410166520595) internal successors, (1398), 1205 states have internal predecessors, (1398), 419 states have call successors, (419), 115 states have call predecessors, (419), 114 states have return successors, (417), 403 states have call predecessors, (417), 417 states have call successors, (417) [2021-11-12 23:17:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2234 transitions. [2021-11-12 23:17:25,758 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2234 transitions. Word has length 101 [2021-11-12 23:17:25,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:25,759 INFO L470 AbstractCegarLoop]: Abstraction has 1701 states and 2234 transitions. [2021-11-12 23:17:25,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-11-12 23:17:25,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2234 transitions. [2021-11-12 23:17:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 23:17:25,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:25,763 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:25,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:25,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:25,978 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:25,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:25,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1496204581, now seen corresponding path program 1 times [2021-11-12 23:17:25,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:25,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203216951] [2021-11-12 23:17:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:25,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:25,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:25,983 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:26,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:17:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:27,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:17:27,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:29,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:30,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:30,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203216951] [2021-11-12 23:17:30,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203216951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:30,325 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:30,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:17:30,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723485290] [2021-11-12 23:17:30,326 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:30,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:17:30,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:30,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:17:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:17:30,328 INFO L87 Difference]: Start difference. First operand 1701 states and 2234 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-12 23:17:30,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:30,558 INFO L93 Difference]: Finished difference Result 1701 states and 2234 transitions. [2021-11-12 23:17:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:30,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 107 [2021-11-12 23:17:30,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:30,575 INFO L225 Difference]: With dead ends: 1701 [2021-11-12 23:17:30,575 INFO L226 Difference]: Without dead ends: 1699 [2021-11-12 23:17:30,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:17:30,578 INFO L933 BasicCegarLoop]: 2230 mSDtfsCounter, 2145 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 4458 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.37ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:30,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2147 Valid, 4458 Invalid, 2 Unknown, 0 Unchecked, 15.46ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 14.37ms Time] [2021-11-12 23:17:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2021-11-12 23:17:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1699. [2021-11-12 23:17:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1140 states have (on average 1.224561403508772) internal successors, (1396), 1203 states have internal predecessors, (1396), 419 states have call successors, (419), 115 states have call predecessors, (419), 114 states have return successors, (417), 403 states have call predecessors, (417), 417 states have call successors, (417) [2021-11-12 23:17:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2232 transitions. [2021-11-12 23:17:30,739 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2232 transitions. Word has length 107 [2021-11-12 23:17:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:30,740 INFO L470 AbstractCegarLoop]: Abstraction has 1699 states and 2232 transitions. [2021-11-12 23:17:30,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-12 23:17:30,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2232 transitions. [2021-11-12 23:17:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-12 23:17:30,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:30,745 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:30,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:30,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:30,971 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:30,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1022398919, now seen corresponding path program 1 times [2021-11-12 23:17:30,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:30,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119783262] [2021-11-12 23:17:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:30,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:30,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:30,976 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:30,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:17:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:32,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:17:32,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:34,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:35,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:35,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119783262] [2021-11-12 23:17:35,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119783262] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:35,290 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:35,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:17:35,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327259173] [2021-11-12 23:17:35,290 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:35,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:17:35,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:17:35,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:17:35,293 INFO L87 Difference]: Start difference. First operand 1699 states and 2232 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-12 23:17:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:35,537 INFO L93 Difference]: Finished difference Result 1699 states and 2232 transitions. [2021-11-12 23:17:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:35,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 113 [2021-11-12 23:17:35,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:35,554 INFO L225 Difference]: With dead ends: 1699 [2021-11-12 23:17:35,554 INFO L226 Difference]: Without dead ends: 1697 [2021-11-12 23:17:35,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:17:35,557 INFO L933 BasicCegarLoop]: 2228 mSDtfsCounter, 2138 mSDsluCounter, 4444 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 6672 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.51ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:35,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 6672 Invalid, 2 Unknown, 0 Unchecked, 18.37ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 14.51ms Time] [2021-11-12 23:17:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2021-11-12 23:17:35,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1697. [2021-11-12 23:17:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1139 states have (on average 1.2238805970149254) internal successors, (1394), 1201 states have internal predecessors, (1394), 419 states have call successors, (419), 115 states have call predecessors, (419), 114 states have return successors, (417), 403 states have call predecessors, (417), 417 states have call successors, (417) [2021-11-12 23:17:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2230 transitions. [2021-11-12 23:17:35,748 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2230 transitions. Word has length 113 [2021-11-12 23:17:35,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:35,749 INFO L470 AbstractCegarLoop]: Abstraction has 1697 states and 2230 transitions. [2021-11-12 23:17:35,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-12 23:17:35,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2230 transitions. [2021-11-12 23:17:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-12 23:17:35,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:35,755 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:35,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:35,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:35,981 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:35,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:35,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1022287868, now seen corresponding path program 1 times [2021-11-12 23:17:35,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:35,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713643716] [2021-11-12 23:17:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:35,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:35,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:35,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:36,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:17:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:37,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:17:37,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:39,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:40,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:40,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713643716] [2021-11-12 23:17:40,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713643716] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:40,230 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:40,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:17:40,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38607704] [2021-11-12 23:17:40,231 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:40,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:17:40,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:40,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:17:40,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:17:40,233 INFO L87 Difference]: Start difference. First operand 1697 states and 2230 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2021-11-12 23:17:40,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:40,472 INFO L93 Difference]: Finished difference Result 1697 states and 2230 transitions. [2021-11-12 23:17:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:40,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 115 [2021-11-12 23:17:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:40,490 INFO L225 Difference]: With dead ends: 1697 [2021-11-12 23:17:40,490 INFO L226 Difference]: Without dead ends: 1695 [2021-11-12 23:17:40,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:17:40,493 INFO L933 BasicCegarLoop]: 2226 mSDtfsCounter, 2130 mSDsluCounter, 4448 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2132 SdHoareTripleChecker+Valid, 6674 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:40,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2132 Valid, 6674 Invalid, 2 Unknown, 0 Unchecked, 18.50ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 13.24ms Time] [2021-11-12 23:17:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2021-11-12 23:17:40,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2021-11-12 23:17:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1138 states have (on average 1.2231985940246046) internal successors, (1392), 1199 states have internal predecessors, (1392), 419 states have call successors, (419), 115 states have call predecessors, (419), 114 states have return successors, (417), 403 states have call predecessors, (417), 417 states have call successors, (417) [2021-11-12 23:17:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2228 transitions. [2021-11-12 23:17:40,669 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2228 transitions. Word has length 115 [2021-11-12 23:17:40,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:40,671 INFO L470 AbstractCegarLoop]: Abstraction has 1695 states and 2228 transitions. [2021-11-12 23:17:40,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2021-11-12 23:17:40,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2228 transitions. [2021-11-12 23:17:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-12 23:17:40,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:40,675 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:40,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:40,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:40,893 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2059575562, now seen corresponding path program 1 times [2021-11-12 23:17:40,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:40,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574075417] [2021-11-12 23:17:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:40,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:40,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:40,897 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:40,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:17:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:42,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:17:42,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:44,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:17:45,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:45,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574075417] [2021-11-12 23:17:45,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574075417] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:45,032 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:45,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:17:45,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325035362] [2021-11-12 23:17:45,033 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:45,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:17:45,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:17:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:17:45,035 INFO L87 Difference]: Start difference. First operand 1695 states and 2228 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2021-11-12 23:17:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:45,281 INFO L93 Difference]: Finished difference Result 1695 states and 2228 transitions. [2021-11-12 23:17:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:45,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 121 [2021-11-12 23:17:45,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:45,300 INFO L225 Difference]: With dead ends: 1695 [2021-11-12 23:17:45,300 INFO L226 Difference]: Without dead ends: 1693 [2021-11-12 23:17:45,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:17:45,303 INFO L933 BasicCegarLoop]: 2224 mSDtfsCounter, 2122 mSDsluCounter, 4444 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 6668 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:45,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2124 Valid, 6668 Invalid, 2 Unknown, 0 Unchecked, 16.45ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 12.67ms Time] [2021-11-12 23:17:45,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2021-11-12 23:17:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1693. [2021-11-12 23:17:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1137 states have (on average 1.2225153913808267) internal successors, (1390), 1197 states have internal predecessors, (1390), 419 states have call successors, (419), 115 states have call predecessors, (419), 114 states have return successors, (417), 403 states have call predecessors, (417), 417 states have call successors, (417) [2021-11-12 23:17:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2226 transitions. [2021-11-12 23:17:45,483 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2226 transitions. Word has length 121 [2021-11-12 23:17:45,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:45,484 INFO L470 AbstractCegarLoop]: Abstraction has 1693 states and 2226 transitions. [2021-11-12 23:17:45,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2021-11-12 23:17:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2226 transitions. [2021-11-12 23:17:45,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-12 23:17:45,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:45,489 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-12 23:17:45,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:45,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:45,703 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2127659301, now seen corresponding path program 1 times [2021-11-12 23:17:45,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:45,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576318895] [2021-11-12 23:17:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:45,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:45,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:45,707 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:45,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:17:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:47,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:17:47,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-12 23:17:48,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-11-12 23:17:50,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:50,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576318895] [2021-11-12 23:17:50,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576318895] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:17:50,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:17:50,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 23:17:50,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456030027] [2021-11-12 23:17:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:50,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:17:50,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:50,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:17:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:17:50,224 INFO L87 Difference]: Start difference. First operand 1693 states and 2226 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 23:17:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:52,519 INFO L93 Difference]: Finished difference Result 3626 states and 4823 transitions. [2021-11-12 23:17:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:17:52,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 168 [2021-11-12 23:17:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:52,621 INFO L225 Difference]: With dead ends: 3626 [2021-11-12 23:17:52,621 INFO L226 Difference]: Without dead ends: 1948 [2021-11-12 23:17:52,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:17:52,632 INFO L933 BasicCegarLoop]: 2321 mSDtfsCounter, 312 mSDsluCounter, 9000 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1631.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 11321 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.95ms SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1830.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:52,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 11321 Invalid, 407 Unknown, 0 Unchecked, 41.95ms Time], IncrementalHoareTripleChecker [232 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 1830.61ms Time] [2021-11-12 23:17:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2021-11-12 23:17:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1697. [2021-11-12 23:17:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1140 states have (on average 1.2219298245614034) internal successors, (1393), 1200 states have internal predecessors, (1393), 420 states have call successors, (420), 115 states have call predecessors, (420), 114 states have return successors, (418), 404 states have call predecessors, (418), 418 states have call successors, (418) [2021-11-12 23:17:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2231 transitions. [2021-11-12 23:17:52,885 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2231 transitions. Word has length 168 [2021-11-12 23:17:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:52,886 INFO L470 AbstractCegarLoop]: Abstraction has 1697 states and 2231 transitions. [2021-11-12 23:17:52,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 23:17:52,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2231 transitions. [2021-11-12 23:17:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-12 23:17:52,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:52,891 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-12 23:17:52,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:53,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:53,119 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:17:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:53,120 INFO L85 PathProgramCache]: Analyzing trace with hash 762116317, now seen corresponding path program 1 times [2021-11-12 23:17:53,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:53,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468672337] [2021-11-12 23:17:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:53,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:53,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:53,124 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:53,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:17:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:55,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:17:55,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-12 23:17:56,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-11-12 23:17:58,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:58,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468672337] [2021-11-12 23:17:58,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468672337] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:17:58,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1728729671] [2021-11-12 23:17:58,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:58,667 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:17:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:17:58,669 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:17:58,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 23:18:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:00,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:18:00,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-12 23:18:03,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-12 23:18:04,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1728729671] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:18:04,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:18:04,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [8, 8] total 14 [2021-11-12 23:18:04,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722628299] [2021-11-12 23:18:04,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:04,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:18:04,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:04,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:18:04,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:18:04,556 INFO L87 Difference]: Start difference. First operand 1697 states and 2231 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 23:18:06,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:18:08,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:18:23,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:23,291 INFO L93 Difference]: Finished difference Result 3350 states and 4455 transitions. [2021-11-12 23:18:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:18:23,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 168 [2021-11-12 23:18:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:23,317 INFO L225 Difference]: With dead ends: 3350 [2021-11-12 23:18:23,317 INFO L226 Difference]: Without dead ends: 1697 [2021-11-12 23:18:23,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:18:23,330 INFO L933 BasicCegarLoop]: 2222 mSDtfsCounter, 2140 mSDsluCounter, 7208 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17286.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 9430 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.95ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18134.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:23,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2145 Valid, 9430 Invalid, 1692 Unknown, 0 Unchecked, 53.95ms Time], IncrementalHoareTripleChecker [3 Valid, 1687 Invalid, 2 Unknown, 0 Unchecked, 18134.50ms Time] [2021-11-12 23:18:23,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2021-11-12 23:18:23,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1697. [2021-11-12 23:18:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1140 states have (on average 1.2210526315789474) internal successors, (1392), 1200 states have internal predecessors, (1392), 420 states have call successors, (420), 115 states have call predecessors, (420), 114 states have return successors, (418), 404 states have call predecessors, (418), 418 states have call successors, (418) [2021-11-12 23:18:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2230 transitions. [2021-11-12 23:18:23,540 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2230 transitions. Word has length 168 [2021-11-12 23:18:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:23,541 INFO L470 AbstractCegarLoop]: Abstraction has 1697 states and 2230 transitions. [2021-11-12 23:18:23,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 23:18:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2230 transitions. [2021-11-12 23:18:23,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-12 23:18:23,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:23,546 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-12 23:18:23,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:23,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:23,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:23,967 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:18:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 762175899, now seen corresponding path program 1 times [2021-11-12 23:18:23,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:23,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891087119] [2021-11-12 23:18:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:23,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:23,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:23,971 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:23,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:18:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:25,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:18:25,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-12 23:18:27,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-11-12 23:18:29,296 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:29,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891087119] [2021-11-12 23:18:29,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891087119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:18:29,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [482983394] [2021-11-12 23:18:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:29,297 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:18:29,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:18:29,298 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:18:29,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-12 23:18:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:32,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 23:18:32,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-11-12 23:18:34,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-11-12 23:18:35,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [482983394] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:18:35,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:18:35,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8, 6] total 13 [2021-11-12 23:18:35,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242392260] [2021-11-12 23:18:35,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:35,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:18:35,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:18:35,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:18:35,702 INFO L87 Difference]: Start difference. First operand 1697 states and 2230 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-12 23:18:36,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:36,374 INFO L93 Difference]: Finished difference Result 3616 states and 4805 transitions. [2021-11-12 23:18:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:18:36,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 168 [2021-11-12 23:18:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:36,396 INFO L225 Difference]: With dead ends: 3616 [2021-11-12 23:18:36,396 INFO L226 Difference]: Without dead ends: 1944 [2021-11-12 23:18:36,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:18:36,406 INFO L933 BasicCegarLoop]: 2602 mSDtfsCounter, 311 mSDsluCounter, 9918 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 12520 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:36,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 12520 Invalid, 12 Unknown, 0 Unchecked, 28.43ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 141.52ms Time] [2021-11-12 23:18:36,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-11-12 23:18:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1697. [2021-11-12 23:18:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1140 states have (on average 1.2201754385964911) internal successors, (1391), 1199 states have internal predecessors, (1391), 420 states have call successors, (420), 115 states have call predecessors, (420), 114 states have return successors, (418), 404 states have call predecessors, (418), 418 states have call successors, (418) [2021-11-12 23:18:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2229 transitions. [2021-11-12 23:18:36,629 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2229 transitions. Word has length 168 [2021-11-12 23:18:36,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:36,630 INFO L470 AbstractCegarLoop]: Abstraction has 1697 states and 2229 transitions. [2021-11-12 23:18:36,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-12 23:18:36,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2229 transitions. [2021-11-12 23:18:36,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-12 23:18:36,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:36,635 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:18:36,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:36,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:37,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:37,051 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:18:37,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:37,052 INFO L85 PathProgramCache]: Analyzing trace with hash -694467888, now seen corresponding path program 1 times [2021-11-12 23:18:37,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:37,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528753290] [2021-11-12 23:18:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:37,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:37,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:37,054 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:37,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:18:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:38,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:18:38,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:18:40,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:18:41,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:41,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528753290] [2021-11-12 23:18:41,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528753290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:18:41,036 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:18:41,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:18:41,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693235329] [2021-11-12 23:18:41,037 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:41,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:18:41,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:18:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:18:41,039 INFO L87 Difference]: Start difference. First operand 1697 states and 2229 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2021-11-12 23:18:41,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:41,272 INFO L93 Difference]: Finished difference Result 1697 states and 2229 transitions. [2021-11-12 23:18:41,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:18:41,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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 127 [2021-11-12 23:18:41,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:41,288 INFO L225 Difference]: With dead ends: 1697 [2021-11-12 23:18:41,288 INFO L226 Difference]: Without dead ends: 1695 [2021-11-12 23:18:41,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:18:41,290 INFO L933 BasicCegarLoop]: 2220 mSDtfsCounter, 2115 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 4438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:41,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2117 Valid, 4438 Invalid, 2 Unknown, 0 Unchecked, 10.51ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 10.96ms Time] [2021-11-12 23:18:41,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2021-11-12 23:18:41,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2021-11-12 23:18:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1139 states have (on average 1.2194907813871818) internal successors, (1389), 1197 states have internal predecessors, (1389), 420 states have call successors, (420), 115 states have call predecessors, (420), 114 states have return successors, (418), 404 states have call predecessors, (418), 418 states have call successors, (418) [2021-11-12 23:18:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2227 transitions. [2021-11-12 23:18:41,488 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2227 transitions. Word has length 127 [2021-11-12 23:18:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:41,489 INFO L470 AbstractCegarLoop]: Abstraction has 1695 states and 2227 transitions. [2021-11-12 23:18:41,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2021-11-12 23:18:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2227 transitions. [2021-11-12 23:18:41,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-12 23:18:41,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:41,494 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-12 23:18:41,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:41,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:41,719 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:18:41,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:41,719 INFO L85 PathProgramCache]: Analyzing trace with hash 570155326, now seen corresponding path program 1 times [2021-11-12 23:18:41,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:41,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481809872] [2021-11-12 23:18:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:41,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:41,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:41,721 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:41,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:18:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:43,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 23:18:43,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 229 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-12 23:18:44,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-11-12 23:18:47,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:47,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481809872] [2021-11-12 23:18:47,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481809872] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:18:47,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [690351607] [2021-11-12 23:18:47,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:47,208 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:18:47,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:18:47,212 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:18:47,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-12 23:18:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:50,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 23:18:50,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-12 23:18:51,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-11-12 23:18:52,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [690351607] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:18:52,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:18:52,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8, 6] total 14 [2021-11-12 23:18:52,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591209981] [2021-11-12 23:18:52,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:52,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:18:52,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:52,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:18:52,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:18:52,284 INFO L87 Difference]: Start difference. First operand 1695 states and 2227 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 23:18:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:52,706 INFO L93 Difference]: Finished difference Result 3607 states and 4792 transitions. [2021-11-12 23:18:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:18:52,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 172 [2021-11-12 23:18:52,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:52,727 INFO L225 Difference]: With dead ends: 3607 [2021-11-12 23:18:52,728 INFO L226 Difference]: Without dead ends: 1942 [2021-11-12 23:18:52,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 671 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:18:52,738 INFO L933 BasicCegarLoop]: 2599 mSDtfsCounter, 307 mSDsluCounter, 9912 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 12511 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:52,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 12511 Invalid, 12 Unknown, 0 Unchecked, 16.25ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 89.13ms Time] [2021-11-12 23:18:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2021-11-12 23:18:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1695. [2021-11-12 23:18:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1139 states have (on average 1.218612818261633) internal successors, (1388), 1196 states have internal predecessors, (1388), 420 states have call successors, (420), 115 states have call predecessors, (420), 114 states have return successors, (418), 404 states have call predecessors, (418), 418 states have call successors, (418) [2021-11-12 23:18:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2226 transitions. [2021-11-12 23:18:52,962 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2226 transitions. Word has length 172 [2021-11-12 23:18:52,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:52,962 INFO L470 AbstractCegarLoop]: Abstraction has 1695 states and 2226 transitions. [2021-11-12 23:18:52,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 23:18:52,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2226 transitions. [2021-11-12 23:18:52,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-12 23:18:52,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:52,967 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:18:52,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:53,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:53,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:53,383 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:18:53,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash -304653120, now seen corresponding path program 1 times [2021-11-12 23:18:53,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:53,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321574031] [2021-11-12 23:18:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:53,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:53,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:53,387 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:53,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:18:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:55,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 23:18:55,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-12 23:18:58,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-12 23:19:03,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:03,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321574031] [2021-11-12 23:19:03,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321574031] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:19:03,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:19:03,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [18] total 33 [2021-11-12 23:19:03,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390188210] [2021-11-12 23:19:03,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:03,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:19:03,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:03,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:19:03,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=977, Unknown=0, NotChecked=0, Total=1056 [2021-11-12 23:19:03,604 INFO L87 Difference]: Start difference. First operand 1695 states and 2226 transitions. Second operand has 18 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 7 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2021-11-12 23:19:11,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:11,172 INFO L93 Difference]: Finished difference Result 2716 states and 3524 transitions. [2021-11-12 23:19:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 23:19:11,172 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 7 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 164 [2021-11-12 23:19:11,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:11,186 INFO L225 Difference]: With dead ends: 2716 [2021-11-12 23:19:11,186 INFO L226 Difference]: Without dead ends: 1735 [2021-11-12 23:19:11,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2021-11-12 23:19:11,194 INFO L933 BasicCegarLoop]: 2210 mSDtfsCounter, 88 mSDsluCounter, 35108 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4089.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 37318 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.76ms SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4257.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:11,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 37318 Invalid, 915 Unknown, 0 Unchecked, 55.76ms Time], IncrementalHoareTripleChecker [277 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 4257.68ms Time] [2021-11-12 23:19:11,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2021-11-12 23:19:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1711. [2021-11-12 23:19:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1150 states have (on average 1.2165217391304348) internal successors, (1399), 1207 states have internal predecessors, (1399), 425 states have call successors, (425), 115 states have call predecessors, (425), 114 states have return successors, (423), 409 states have call predecessors, (423), 423 states have call successors, (423) [2021-11-12 23:19:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2247 transitions. [2021-11-12 23:19:11,421 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2247 transitions. Word has length 164 [2021-11-12 23:19:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:11,422 INFO L470 AbstractCegarLoop]: Abstraction has 1711 states and 2247 transitions. [2021-11-12 23:19:11,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 7 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2021-11-12 23:19:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2247 transitions. [2021-11-12 23:19:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-12 23:19:11,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:11,426 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:11,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:11,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:11,645 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:19:11,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash 81209282, now seen corresponding path program 1 times [2021-11-12 23:19:11,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:11,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538409417] [2021-11-12 23:19:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:11,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:11,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:11,648 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:11,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 23:19:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:13,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:19:13,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-12 23:19:14,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-12 23:19:15,898 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:15,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538409417] [2021-11-12 23:19:15,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538409417] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:19:15,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:19:15,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-12 23:19:15,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066251369] [2021-11-12 23:19:15,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:15,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:19:15,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:15,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:19:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:19:15,900 INFO L87 Difference]: Start difference. First operand 1711 states and 2247 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-12 23:19:17,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:17,824 INFO L93 Difference]: Finished difference Result 2763 states and 3593 transitions. [2021-11-12 23:19:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:19:17,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 164 [2021-11-12 23:19:17,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:17,838 INFO L225 Difference]: With dead ends: 2763 [2021-11-12 23:19:17,838 INFO L226 Difference]: Without dead ends: 1733 [2021-11-12 23:19:17,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:19:17,845 INFO L933 BasicCegarLoop]: 2263 mSDtfsCounter, 628 mSDsluCounter, 8035 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1404.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 10298 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.93ms SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1566.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:17,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 10298 Invalid, 508 Unknown, 0 Unchecked, 15.93ms Time], IncrementalHoareTripleChecker [352 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 1566.97ms Time] [2021-11-12 23:19:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2021-11-12 23:19:18,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1709. [2021-11-12 23:19:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1149 states have (on average 1.2158398607484768) internal successors, (1397), 1206 states have internal predecessors, (1397), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:19:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2243 transitions. [2021-11-12 23:19:18,079 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2243 transitions. Word has length 164 [2021-11-12 23:19:18,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:18,080 INFO L470 AbstractCegarLoop]: Abstraction has 1709 states and 2243 transitions. [2021-11-12 23:19:18,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-12 23:19:18,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2243 transitions. [2021-11-12 23:19:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-12 23:19:18,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:18,082 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-12 23:19:18,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:18,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:18,304 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:19:18,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:18,305 INFO L85 PathProgramCache]: Analyzing trace with hash 93036411, now seen corresponding path program 1 times [2021-11-12 23:19:18,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:18,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496820885] [2021-11-12 23:19:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:18,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:18,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:18,309 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:18,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:19:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:20,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:19:20,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-12 23:19:20,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-12 23:19:21,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:21,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496820885] [2021-11-12 23:19:21,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496820885] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:21,363 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:21,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:19:21,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366411843] [2021-11-12 23:19:21,364 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:21,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:19:21,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:19:21,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:19:21,366 INFO L87 Difference]: Start difference. First operand 1709 states and 2243 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-12 23:19:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:21,591 INFO L93 Difference]: Finished difference Result 1709 states and 2243 transitions. [2021-11-12 23:19:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:19:21,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 176 [2021-11-12 23:19:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:21,599 INFO L225 Difference]: With dead ends: 1709 [2021-11-12 23:19:21,599 INFO L226 Difference]: Without dead ends: 1707 [2021-11-12 23:19:21,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:19:21,601 INFO L933 BasicCegarLoop]: 2217 mSDtfsCounter, 11 mSDsluCounter, 6643 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8860 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.71ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:21,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 8860 Invalid, 3 Unknown, 0 Unchecked, 8.55ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 20.71ms Time] [2021-11-12 23:19:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-11-12 23:19:21,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1707. [2021-11-12 23:19:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1148 states have (on average 1.2151567944250872) internal successors, (1395), 1204 states have internal predecessors, (1395), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:19:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2241 transitions. [2021-11-12 23:19:21,880 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2241 transitions. Word has length 176 [2021-11-12 23:19:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:21,881 INFO L470 AbstractCegarLoop]: Abstraction has 1707 states and 2241 transitions. [2021-11-12 23:19:21,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-12 23:19:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2241 transitions. [2021-11-12 23:19:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-12 23:19:21,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:21,883 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:21,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:22,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:22,107 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:19:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:22,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1593419609, now seen corresponding path program 1 times [2021-11-12 23:19:22,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:22,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590444284] [2021-11-12 23:19:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:22,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:22,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:22,112 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:22,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 23:19:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:23,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:19:23,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:19:25,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:19:26,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:26,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590444284] [2021-11-12 23:19:26,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590444284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:26,516 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:26,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:19:26,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595335851] [2021-11-12 23:19:26,517 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:26,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:19:26,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:19:26,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:19:26,519 INFO L87 Difference]: Start difference. First operand 1707 states and 2241 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-12 23:19:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:26,722 INFO L93 Difference]: Finished difference Result 1707 states and 2241 transitions. [2021-11-12 23:19:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:19:26,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 133 [2021-11-12 23:19:26,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:26,728 INFO L225 Difference]: With dead ends: 1707 [2021-11-12 23:19:26,728 INFO L226 Difference]: Without dead ends: 1705 [2021-11-12 23:19:26,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:19:26,730 INFO L933 BasicCegarLoop]: 2215 mSDtfsCounter, 2101 mSDsluCounter, 4426 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 6641 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.59ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:26,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2103 Valid, 6641 Invalid, 2 Unknown, 0 Unchecked, 8.99ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 10.59ms Time] [2021-11-12 23:19:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-11-12 23:19:26,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1705. [2021-11-12 23:19:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1147 states have (on average 1.2144725370531821) internal successors, (1393), 1202 states have internal predecessors, (1393), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:19:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2239 transitions. [2021-11-12 23:19:26,928 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2239 transitions. Word has length 133 [2021-11-12 23:19:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:26,929 INFO L470 AbstractCegarLoop]: Abstraction has 1705 states and 2239 transitions. [2021-11-12 23:19:26,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-11-12 23:19:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2239 transitions. [2021-11-12 23:19:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-12 23:19:26,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:26,932 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:26,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:27,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:27,147 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:19:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:27,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1388072590, now seen corresponding path program 1 times [2021-11-12 23:19:27,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:27,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741635744] [2021-11-12 23:19:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:27,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:27,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:27,152 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:27,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 23:19:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:29,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:19:29,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:19:31,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:19:32,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:32,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741635744] [2021-11-12 23:19:32,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741635744] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:32,071 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:32,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:19:32,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544025047] [2021-11-12 23:19:32,072 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:32,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:19:32,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:32,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:19:32,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:19:32,073 INFO L87 Difference]: Start difference. First operand 1705 states and 2239 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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) [2021-11-12 23:19:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:32,330 INFO L93 Difference]: Finished difference Result 1705 states and 2239 transitions. [2021-11-12 23:19:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:19:32,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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 139 [2021-11-12 23:19:32,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:32,340 INFO L225 Difference]: With dead ends: 1705 [2021-11-12 23:19:32,340 INFO L226 Difference]: Without dead ends: 1703 [2021-11-12 23:19:32,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:19:32,342 INFO L933 BasicCegarLoop]: 2213 mSDtfsCounter, 2096 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 4424 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:32,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2098 Valid, 4424 Invalid, 2 Unknown, 0 Unchecked, 8.91ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 11.61ms Time] [2021-11-12 23:19:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2021-11-12 23:19:32,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1703. [2021-11-12 23:19:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1146 states have (on average 1.2137870855148343) internal successors, (1391), 1200 states have internal predecessors, (1391), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:19:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2237 transitions. [2021-11-12 23:19:32,588 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2237 transitions. Word has length 139 [2021-11-12 23:19:32,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:32,589 INFO L470 AbstractCegarLoop]: Abstraction has 1703 states and 2237 transitions. [2021-11-12 23:19:32,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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) [2021-11-12 23:19:32,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2237 transitions. [2021-11-12 23:19:32,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-12 23:19:32,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:32,592 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-12 23:19:32,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:32,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:32,807 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:19:32,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:32,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1236112233, now seen corresponding path program 1 times [2021-11-12 23:19:32,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:32,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31793479] [2021-11-12 23:19:32,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:32,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:32,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:32,812 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:32,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 23:19:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:35,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:19:35,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-12 23:19:37,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-12 23:19:38,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:38,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31793479] [2021-11-12 23:19:38,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31793479] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:38,912 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:38,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-12 23:19:38,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531140036] [2021-11-12 23:19:38,913 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:38,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:19:38,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:38,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:19:38,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:38,914 INFO L87 Difference]: Start difference. First operand 1703 states and 2237 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-12 23:19:40,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:40,878 INFO L93 Difference]: Finished difference Result 3344 states and 4448 transitions. [2021-11-12 23:19:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:19:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 183 [2021-11-12 23:19:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:40,886 INFO L225 Difference]: With dead ends: 3344 [2021-11-12 23:19:40,887 INFO L226 Difference]: Without dead ends: 1699 [2021-11-12 23:19:40,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:40,899 INFO L933 BasicCegarLoop]: 2208 mSDtfsCounter, 3463 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1332.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.70ms SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1677.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:40,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3463 Valid, 2208 Invalid, 820 Unknown, 0 Unchecked, 11.70ms Time], IncrementalHoareTripleChecker [818 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1677.82ms Time] [2021-11-12 23:19:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2021-11-12 23:19:41,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1699. [2021-11-12 23:19:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1143 states have (on average 1.2125984251968505) internal successors, (1386), 1196 states have internal predecessors, (1386), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:19:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2232 transitions. [2021-11-12 23:19:41,084 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2232 transitions. Word has length 183 [2021-11-12 23:19:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:41,085 INFO L470 AbstractCegarLoop]: Abstraction has 1699 states and 2232 transitions. [2021-11-12 23:19:41,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-12 23:19:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2232 transitions. [2021-11-12 23:19:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-12 23:19:41,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:41,088 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:41,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:41,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:41,303 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:19:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash 747551330, now seen corresponding path program 1 times [2021-11-12 23:19:41,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:41,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556656523] [2021-11-12 23:19:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:41,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:41,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:41,307 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:41,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 23:19:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:43,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:19:43,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:19:45,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:19:46,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:46,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556656523] [2021-11-12 23:19:46,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556656523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:46,006 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:46,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:19:46,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978157402] [2021-11-12 23:19:46,006 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:46,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:19:46,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:46,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:19:46,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:19:46,008 INFO L87 Difference]: Start difference. First operand 1699 states and 2232 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-12 23:19:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:46,304 INFO L93 Difference]: Finished difference Result 1699 states and 2232 transitions. [2021-11-12 23:19:46,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:19:46,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 145 [2021-11-12 23:19:46,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:46,314 INFO L225 Difference]: With dead ends: 1699 [2021-11-12 23:19:46,315 INFO L226 Difference]: Without dead ends: 1697 [2021-11-12 23:19:46,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:19:46,317 INFO L933 BasicCegarLoop]: 2206 mSDtfsCounter, 2080 mSDsluCounter, 4408 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 6614 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.78ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:46,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2082 Valid, 6614 Invalid, 2 Unknown, 0 Unchecked, 9.75ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 11.78ms Time] [2021-11-12 23:19:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2021-11-12 23:19:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1697. [2021-11-12 23:19:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1142 states have (on average 1.2119089316987741) internal successors, (1384), 1194 states have internal predecessors, (1384), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:19:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2230 transitions. [2021-11-12 23:19:46,582 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2230 transitions. Word has length 145 [2021-11-12 23:19:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:46,583 INFO L470 AbstractCegarLoop]: Abstraction has 1697 states and 2230 transitions. [2021-11-12 23:19:46,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-12 23:19:46,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2230 transitions. [2021-11-12 23:19:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-12 23:19:46,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:46,586 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:46,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:46,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:46,811 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:19:46,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash 918827982, now seen corresponding path program 1 times [2021-11-12 23:19:46,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:46,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325153881] [2021-11-12 23:19:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:46,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:46,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:46,814 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:46,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-12 23:19:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:48,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:19:48,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:19:50,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:19:52,539 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:52,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325153881] [2021-11-12 23:19:52,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325153881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:52,539 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:52,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-12 23:19:52,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952795266] [2021-11-12 23:19:52,540 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:52,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:19:52,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:52,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:19:52,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:19:52,543 INFO L87 Difference]: Start difference. First operand 1697 states and 2230 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-12 23:19:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:54,612 INFO L93 Difference]: Finished difference Result 1697 states and 2230 transitions. [2021-11-12 23:19:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:19:54,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 151 [2021-11-12 23:19:54,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:54,619 INFO L225 Difference]: With dead ends: 1697 [2021-11-12 23:19:54,619 INFO L226 Difference]: Without dead ends: 1695 [2021-11-12 23:19:54,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:19:54,620 INFO L933 BasicCegarLoop]: 2204 mSDtfsCounter, 3423 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1347.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3425 SdHoareTripleChecker+Valid, 4406 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.52ms SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1701.48ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:54,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3425 Valid, 4406 Invalid, 815 Unknown, 0 Unchecked, 17.52ms Time], IncrementalHoareTripleChecker [813 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1701.48ms Time] [2021-11-12 23:19:54,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2021-11-12 23:19:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2021-11-12 23:19:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1141 states have (on average 1.2112182296231375) internal successors, (1382), 1192 states have internal predecessors, (1382), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:19:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2228 transitions. [2021-11-12 23:19:54,893 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2228 transitions. Word has length 151 [2021-11-12 23:19:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:54,893 INFO L470 AbstractCegarLoop]: Abstraction has 1695 states and 2228 transitions. [2021-11-12 23:19:54,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-12 23:19:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2228 transitions. [2021-11-12 23:19:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-12 23:19:54,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:54,902 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:54,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:55,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:55,119 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:19:55,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2039593308, now seen corresponding path program 1 times [2021-11-12 23:19:55,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:55,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704083789] [2021-11-12 23:19:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:55,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:55,124 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:55,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-12 23:19:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:57,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:19:57,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:19:59,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:00,122 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:00,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704083789] [2021-11-12 23:20:00,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704083789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:00,122 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:00,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:20:00,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418286080] [2021-11-12 23:20:00,123 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:00,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:00,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:00,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:00,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:20:00,125 INFO L87 Difference]: Start difference. First operand 1695 states and 2228 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-11-12 23:20:00,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:00,446 INFO L93 Difference]: Finished difference Result 1695 states and 2228 transitions. [2021-11-12 23:20:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:20:00,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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 157 [2021-11-12 23:20:00,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:00,453 INFO L225 Difference]: With dead ends: 1695 [2021-11-12 23:20:00,453 INFO L226 Difference]: Without dead ends: 1693 [2021-11-12 23:20:00,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:20:00,455 INFO L933 BasicCegarLoop]: 2202 mSDtfsCounter, 2064 mSDsluCounter, 4400 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 6602 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:00,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2066 Valid, 6602 Invalid, 2 Unknown, 0 Unchecked, 11.88ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 16.17ms Time] [2021-11-12 23:20:00,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2021-11-12 23:20:00,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1693. [2021-11-12 23:20:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1140 states have (on average 1.2105263157894737) internal successors, (1380), 1190 states have internal predecessors, (1380), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:20:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2226 transitions. [2021-11-12 23:20:00,753 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2226 transitions. Word has length 157 [2021-11-12 23:20:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:00,753 INFO L470 AbstractCegarLoop]: Abstraction has 1693 states and 2226 transitions. [2021-11-12 23:20:00,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-11-12 23:20:00,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2226 transitions. [2021-11-12 23:20:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-12 23:20:00,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:00,756 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:00,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:00,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:00,983 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:20:00,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:00,983 INFO L85 PathProgramCache]: Analyzing trace with hash 521793853, now seen corresponding path program 1 times [2021-11-12 23:20:00,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:00,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018908079] [2021-11-12 23:20:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:00,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:00,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:00,987 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:00,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-12 23:20:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:02,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:02,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:04,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:05,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:05,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018908079] [2021-11-12 23:20:05,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018908079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:05,461 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:05,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:20:05,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014038667] [2021-11-12 23:20:05,461 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:05,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:05,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:20:05,463 INFO L87 Difference]: Start difference. First operand 1693 states and 2226 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2021-11-12 23:20:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:05,690 INFO L93 Difference]: Finished difference Result 1693 states and 2226 transitions. [2021-11-12 23:20:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:20:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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 163 [2021-11-12 23:20:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:05,698 INFO L225 Difference]: With dead ends: 1693 [2021-11-12 23:20:05,698 INFO L226 Difference]: Without dead ends: 1691 [2021-11-12 23:20:05,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:20:05,701 INFO L933 BasicCegarLoop]: 2200 mSDtfsCounter, 2059 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 4398 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.92ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:05,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2061 Valid, 4398 Invalid, 2 Unknown, 0 Unchecked, 6.72ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 10.92ms Time] [2021-11-12 23:20:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2021-11-12 23:20:06,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1691. [2021-11-12 23:20:06,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1139 states have (on average 1.2098331870061458) internal successors, (1378), 1188 states have internal predecessors, (1378), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:20:06,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2224 transitions. [2021-11-12 23:20:06,031 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2224 transitions. Word has length 163 [2021-11-12 23:20:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:06,032 INFO L470 AbstractCegarLoop]: Abstraction has 1691 states and 2224 transitions. [2021-11-12 23:20:06,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2021-11-12 23:20:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2224 transitions. [2021-11-12 23:20:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-12 23:20:06,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:06,035 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:06,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:06,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:06,251 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:20:06,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:06,251 INFO L85 PathProgramCache]: Analyzing trace with hash -983218419, now seen corresponding path program 1 times [2021-11-12 23:20:06,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:06,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421681728] [2021-11-12 23:20:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:06,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:06,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:06,255 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:06,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-12 23:20:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:07,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:07,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:09,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:10,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:10,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421681728] [2021-11-12 23:20:10,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421681728] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:10,885 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:10,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:20:10,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082324683] [2021-11-12 23:20:10,886 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:10,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:10,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:10,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:10,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:20:10,889 INFO L87 Difference]: Start difference. First operand 1691 states and 2224 transitions. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2021-11-12 23:20:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:11,136 INFO L93 Difference]: Finished difference Result 1691 states and 2224 transitions. [2021-11-12 23:20:11,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:20:11,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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 169 [2021-11-12 23:20:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:11,142 INFO L225 Difference]: With dead ends: 1691 [2021-11-12 23:20:11,142 INFO L226 Difference]: Without dead ends: 1689 [2021-11-12 23:20:11,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:20:11,144 INFO L933 BasicCegarLoop]: 2198 mSDtfsCounter, 2048 mSDsluCounter, 4392 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 6590 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:11,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 6590 Invalid, 2 Unknown, 0 Unchecked, 8.94ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 12.27ms Time] [2021-11-12 23:20:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-11-12 23:20:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1689. [2021-11-12 23:20:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1138 states have (on average 1.2091388400702987) internal successors, (1376), 1186 states have internal predecessors, (1376), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:20:11,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2222 transitions. [2021-11-12 23:20:11,463 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2222 transitions. Word has length 169 [2021-11-12 23:20:11,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:11,466 INFO L470 AbstractCegarLoop]: Abstraction has 1689 states and 2222 transitions. [2021-11-12 23:20:11,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2021-11-12 23:20:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2222 transitions. [2021-11-12 23:20:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-12 23:20:11,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:11,469 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:11,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:11,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:11,669 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:20:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1786064717, now seen corresponding path program 1 times [2021-11-12 23:20:11,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:11,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301440863] [2021-11-12 23:20:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:11,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:11,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:11,673 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:11,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-12 23:20:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:13,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:20:13,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-12 23:20:14,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2021-11-12 23:20:15,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:15,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301440863] [2021-11-12 23:20:15,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301440863] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:15,673 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:15,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:20:15,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655702402] [2021-11-12 23:20:15,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:15,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:20:15,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:15,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:20:15,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:15,675 INFO L87 Difference]: Start difference. First operand 1689 states and 2222 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-12 23:20:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:18,013 INFO L93 Difference]: Finished difference Result 3203 states and 4190 transitions. [2021-11-12 23:20:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:20:18,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 214 [2021-11-12 23:20:18,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:18,023 INFO L225 Difference]: With dead ends: 3203 [2021-11-12 23:20:18,023 INFO L226 Difference]: Without dead ends: 1685 [2021-11-12 23:20:18,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:18,032 INFO L933 BasicCegarLoop]: 2194 mSDtfsCounter, 3475 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1617.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.91ms SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2011.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:18,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3475 Valid, 2194 Invalid, 835 Unknown, 0 Unchecked, 12.91ms Time], IncrementalHoareTripleChecker [834 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2011.79ms Time] [2021-11-12 23:20:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-11-12 23:20:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1685. [2021-11-12 23:20:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1135 states have (on average 1.2079295154185021) internal successors, (1371), 1182 states have internal predecessors, (1371), 424 states have call successors, (424), 115 states have call predecessors, (424), 114 states have return successors, (422), 408 states have call predecessors, (422), 422 states have call successors, (422) [2021-11-12 23:20:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2217 transitions. [2021-11-12 23:20:18,378 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2217 transitions. Word has length 214 [2021-11-12 23:20:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:18,379 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 2217 transitions. [2021-11-12 23:20:18,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-12 23:20:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2217 transitions. [2021-11-12 23:20:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-12 23:20:18,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:18,382 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:18,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:18,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:18,595 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:20:18,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:18,595 INFO L85 PathProgramCache]: Analyzing trace with hash 764453388, now seen corresponding path program 1 times [2021-11-12 23:20:18,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:18,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598604019] [2021-11-12 23:20:18,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:18,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:18,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:18,600 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:18,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-12 23:20:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:20,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:20,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:22,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:23,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:23,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598604019] [2021-11-12 23:20:23,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598604019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:23,250 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:23,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:20:23,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495805204] [2021-11-12 23:20:23,250 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:23,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:23,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:23,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:23,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:20:23,253 INFO L87 Difference]: Start difference. First operand 1685 states and 2217 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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) [2021-11-12 23:20:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:23,766 INFO L93 Difference]: Finished difference Result 3269 states and 4311 transitions. [2021-11-12 23:20:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:20:23,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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 175 [2021-11-12 23:20:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:23,785 INFO L225 Difference]: With dead ends: 3269 [2021-11-12 23:20:23,785 INFO L226 Difference]: Without dead ends: 3267 [2021-11-12 23:20:23,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:20:23,788 INFO L933 BasicCegarLoop]: 2606 mSDtfsCounter, 2038 mSDsluCounter, 4695 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 7301 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.79ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:23,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2040 Valid, 7301 Invalid, 16 Unknown, 0 Unchecked, 10.79ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 89.12ms Time] [2021-11-12 23:20:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2021-11-12 23:20:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 3232. [2021-11-12 23:20:24,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3232 states, 2177 states have (on average 1.2085438677078548) internal successors, (2631), 2260 states have internal predecessors, (2631), 817 states have call successors, (817), 227 states have call predecessors, (817), 226 states have return successors, (834), 785 states have call predecessors, (834), 815 states have call successors, (834) [2021-11-12 23:20:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4282 transitions. [2021-11-12 23:20:24,301 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4282 transitions. Word has length 175 [2021-11-12 23:20:24,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:24,302 INFO L470 AbstractCegarLoop]: Abstraction has 3232 states and 4282 transitions. [2021-11-12 23:20:24,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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) [2021-11-12 23:20:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4282 transitions. [2021-11-12 23:20:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-12 23:20:24,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:24,304 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:24,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:24,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:24,507 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:20:24,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:24,507 INFO L85 PathProgramCache]: Analyzing trace with hash 625531932, now seen corresponding path program 1 times [2021-11-12 23:20:24,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:24,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538647632] [2021-11-12 23:20:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:24,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:24,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:24,510 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:24,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-12 23:20:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:26,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:20:26,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-12 23:20:27,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2021-11-12 23:20:28,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:28,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538647632] [2021-11-12 23:20:28,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538647632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:28,613 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:28,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:20:28,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035743110] [2021-11-12 23:20:28,613 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:28,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:20:28,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:28,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:20:28,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:28,615 INFO L87 Difference]: Start difference. First operand 3232 states and 4282 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-12 23:20:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:29,179 INFO L93 Difference]: Finished difference Result 6222 states and 8197 transitions. [2021-11-12 23:20:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:20:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 220 [2021-11-12 23:20:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:29,196 INFO L225 Difference]: With dead ends: 6222 [2021-11-12 23:20:29,196 INFO L226 Difference]: Without dead ends: 3237 [2021-11-12 23:20:29,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:29,213 INFO L933 BasicCegarLoop]: 2204 mSDtfsCounter, 2150 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 164.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.30ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:29,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2150 Valid, 2248 Invalid, 21 Unknown, 0 Unchecked, 4.30ms Time], IncrementalHoareTripleChecker [18 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 199.24ms Time] [2021-11-12 23:20:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2021-11-12 23:20:29,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 3236. [2021-11-12 23:20:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 2179 states have (on average 1.2065167508031207) internal successors, (2629), 2261 states have internal predecessors, (2629), 817 states have call successors, (817), 230 states have call predecessors, (817), 229 states have return successors, (834), 785 states have call predecessors, (834), 815 states have call successors, (834) [2021-11-12 23:20:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 4280 transitions. [2021-11-12 23:20:29,687 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 4280 transitions. Word has length 220 [2021-11-12 23:20:29,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:29,688 INFO L470 AbstractCegarLoop]: Abstraction has 3236 states and 4280 transitions. [2021-11-12 23:20:29,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-12 23:20:29,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 4280 transitions. [2021-11-12 23:20:29,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-12 23:20:29,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:29,691 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:29,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:29,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:29,899 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:20:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:29,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1666059614, now seen corresponding path program 1 times [2021-11-12 23:20:29,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:29,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033042686] [2021-11-12 23:20:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:29,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:29,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:29,902 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:29,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-12 23:20:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:31,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:31,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:33,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:34,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:34,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033042686] [2021-11-12 23:20:34,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033042686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:34,550 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:34,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:20:34,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875402143] [2021-11-12 23:20:34,550 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:34,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:34,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:34,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:34,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:20:34,551 INFO L87 Difference]: Start difference. First operand 3236 states and 4280 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 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) [2021-11-12 23:20:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:34,986 INFO L93 Difference]: Finished difference Result 3236 states and 4280 transitions. [2021-11-12 23:20:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:20:34,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 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 181 [2021-11-12 23:20:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:34,997 INFO L225 Difference]: With dead ends: 3236 [2021-11-12 23:20:34,998 INFO L226 Difference]: Without dead ends: 3234 [2021-11-12 23:20:34,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:20:35,000 INFO L933 BasicCegarLoop]: 2186 mSDtfsCounter, 2024 mSDsluCounter, 4368 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 6554 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.69ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:35,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2026 Valid, 6554 Invalid, 2 Unknown, 0 Unchecked, 8.90ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 11.69ms Time] [2021-11-12 23:20:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2021-11-12 23:20:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 3234. [2021-11-12 23:20:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 2178 states have (on average 1.2061524334251608) internal successors, (2627), 2259 states have internal predecessors, (2627), 817 states have call successors, (817), 230 states have call predecessors, (817), 229 states have return successors, (834), 785 states have call predecessors, (834), 815 states have call successors, (834) [2021-11-12 23:20:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4278 transitions. [2021-11-12 23:20:35,449 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4278 transitions. Word has length 181 [2021-11-12 23:20:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:35,450 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 4278 transitions. [2021-11-12 23:20:35,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 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) [2021-11-12 23:20:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4278 transitions. [2021-11-12 23:20:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-12 23:20:35,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:35,453 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:35,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:35,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:35,662 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:20:35,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1758806490, now seen corresponding path program 1 times [2021-11-12 23:20:35,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:35,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577557690] [2021-11-12 23:20:35,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:35,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:35,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:35,665 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:35,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-12 23:20:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:37,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:37,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:39,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:20:40,292 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:40,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577557690] [2021-11-12 23:20:40,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577557690] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:40,292 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:40,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-12 23:20:40,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212995492] [2021-11-12 23:20:40,293 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:40,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:40,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:40,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:20:40,294 INFO L87 Difference]: Start difference. First operand 3234 states and 4278 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-12 23:20:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:41,211 INFO L93 Difference]: Finished difference Result 6357 states and 8468 transitions. [2021-11-12 23:20:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:20:41,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 187 [2021-11-12 23:20:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:41,237 INFO L225 Difference]: With dead ends: 6357 [2021-11-12 23:20:41,237 INFO L226 Difference]: Without dead ends: 6147 [2021-11-12 23:20:41,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:20:41,242 INFO L933 BasicCegarLoop]: 2586 mSDtfsCounter, 2013 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 7256 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:41,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 7256 Invalid, 13 Unknown, 0 Unchecked, 11.91ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 73.25ms Time] [2021-11-12 23:20:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2021-11-12 23:20:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 6125. [2021-11-12 23:20:42,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6125 states, 4131 states have (on average 1.2115710481723554) internal successors, (5005), 4280 states have internal predecessors, (5005), 1555 states have call successors, (1555), 431 states have call predecessors, (1555), 429 states have return successors, (1650), 1493 states have call predecessors, (1650), 1551 states have call successors, (1650) [2021-11-12 23:20:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6125 states to 6125 states and 8210 transitions. [2021-11-12 23:20:42,182 INFO L78 Accepts]: Start accepts. Automaton has 6125 states and 8210 transitions. Word has length 187 [2021-11-12 23:20:42,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:42,182 INFO L470 AbstractCegarLoop]: Abstraction has 6125 states and 8210 transitions. [2021-11-12 23:20:42,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-12 23:20:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 6125 states and 8210 transitions. [2021-11-12 23:20:42,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-12 23:20:42,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:42,184 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:42,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:42,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:42,387 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:20:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:42,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1352637752, now seen corresponding path program 1 times [2021-11-12 23:20:42,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:42,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648995454] [2021-11-12 23:20:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:42,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:42,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:42,390 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:42,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-12 23:20:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:44,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:20:44,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2021-11-12 23:20:46,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2021-11-12 23:20:49,551 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:49,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648995454] [2021-11-12 23:20:49,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648995454] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:49,552 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:49,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-12 23:20:49,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206230357] [2021-11-12 23:20:49,552 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:49,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:20:49,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:20:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:20:49,554 INFO L87 Difference]: Start difference. First operand 6125 states and 8210 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 14 states have internal predecessors, (102), 4 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (32), 8 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-12 23:20:54,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:54,580 INFO L93 Difference]: Finished difference Result 14344 states and 19596 transitions. [2021-11-12 23:20:54,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:20:54,581 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 14 states have internal predecessors, (102), 4 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (32), 8 states have call predecessors, (32), 4 states have call successors, (32) Word has length 239 [2021-11-12 23:20:54,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:54,620 INFO L225 Difference]: With dead ends: 14344 [2021-11-12 23:20:54,620 INFO L226 Difference]: Without dead ends: 8259 [2021-11-12 23:20:54,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:20:54,650 INFO L933 BasicCegarLoop]: 2433 mSDtfsCounter, 402 mSDsluCounter, 28663 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2787.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 31096 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.48ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2992.51ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:54,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 31096 Invalid, 245 Unknown, 0 Unchecked, 38.48ms Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 2992.51ms Time] [2021-11-12 23:20:54,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2021-11-12 23:20:55,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 6137. [2021-11-12 23:20:55,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6137 states, 4140 states have (on average 1.211111111111111) internal successors, (5014), 4289 states have internal predecessors, (5014), 1556 states have call successors, (1556), 431 states have call predecessors, (1556), 431 states have return successors, (1657), 1496 states have call predecessors, (1657), 1552 states have call successors, (1657) [2021-11-12 23:20:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 8227 transitions. [2021-11-12 23:20:55,871 INFO L78 Accepts]: Start accepts. Automaton has 6137 states and 8227 transitions. Word has length 239 [2021-11-12 23:20:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:55,872 INFO L470 AbstractCegarLoop]: Abstraction has 6137 states and 8227 transitions. [2021-11-12 23:20:55,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 14 states have internal predecessors, (102), 4 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (32), 8 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-12 23:20:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 6137 states and 8227 transitions. [2021-11-12 23:20:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-12 23:20:55,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:55,876 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:55,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:56,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:56,100 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:20:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:56,101 INFO L85 PathProgramCache]: Analyzing trace with hash -233704877, now seen corresponding path program 1 times [2021-11-12 23:20:56,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:56,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939760038] [2021-11-12 23:20:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:56,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:56,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:56,104 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:56,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-12 23:20:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:58,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 23:20:58,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2021-11-12 23:21:00,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-11-12 23:21:03,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:03,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939760038] [2021-11-12 23:21:03,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939760038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:03,913 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:21:03,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 15] imperfect sequences [] total 27 [2021-11-12 23:21:03,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422099503] [2021-11-12 23:21:03,913 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:03,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-12 23:21:03,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-12 23:21:03,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:21:03,916 INFO L87 Difference]: Start difference. First operand 6137 states and 8227 transitions. Second operand has 27 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 12 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2021-11-12 23:21:13,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:13,409 INFO L93 Difference]: Finished difference Result 13806 states and 18767 transitions. [2021-11-12 23:21:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:21:13,410 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 12 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) Word has length 280 [2021-11-12 23:21:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:13,444 INFO L225 Difference]: With dead ends: 13806 [2021-11-12 23:21:13,445 INFO L226 Difference]: Without dead ends: 8089 [2021-11-12 23:21:13,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2021-11-12 23:21:13,468 INFO L933 BasicCegarLoop]: 2382 mSDtfsCounter, 3261 mSDsluCounter, 36661 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 2230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5498.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 39043 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.46ms SdHoareTripleChecker+Time, 2230 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5946.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:13,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3424 Valid, 39043 Invalid, 2972 Unknown, 0 Unchecked, 59.46ms Time], IncrementalHoareTripleChecker [2230 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 5946.12ms Time] [2021-11-12 23:21:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8089 states. [2021-11-12 23:21:14,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8089 to 6201. [2021-11-12 23:21:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6201 states, 4184 states have (on average 1.2088910133843211) internal successors, (5058), 4333 states have internal predecessors, (5058), 1576 states have call successors, (1576), 431 states have call predecessors, (1576), 431 states have return successors, (1677), 1516 states have call predecessors, (1677), 1572 states have call successors, (1677) [2021-11-12 23:21:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6201 states to 6201 states and 8311 transitions. [2021-11-12 23:21:14,549 INFO L78 Accepts]: Start accepts. Automaton has 6201 states and 8311 transitions. Word has length 280 [2021-11-12 23:21:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:14,551 INFO L470 AbstractCegarLoop]: Abstraction has 6201 states and 8311 transitions. [2021-11-12 23:21:14,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 12 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2021-11-12 23:21:14,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6201 states and 8311 transitions. [2021-11-12 23:21:14,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-12 23:21:14,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:14,556 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2021-11-12 23:21:14,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:14,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:14,771 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:21:14,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash 32811465, now seen corresponding path program 1 times [2021-11-12 23:21:14,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:14,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824935664] [2021-11-12 23:21:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:14,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:14,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:14,776 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:14,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-12 23:21:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:17,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-12 23:21:17,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-12 23:21:19,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-12 23:21:23,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:23,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824935664] [2021-11-12 23:21:23,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824935664] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:21:23,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [518185973] [2021-11-12 23:21:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:23,472 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:21:23,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:21:23,473 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:21:23,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2021-11-12 23:21:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:25,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:21:25,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-11-12 23:21:26,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-11-12 23:21:27,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [518185973] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:27,207 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:21:27,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [13, 13] total 17 [2021-11-12 23:21:27,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885210910] [2021-11-12 23:21:27,207 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:27,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:21:27,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:21:27,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:21:27,209 INFO L87 Difference]: Start difference. First operand 6201 states and 8311 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, (40), 2 states have call predecessors, (40), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-12 23:21:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:28,660 INFO L93 Difference]: Finished difference Result 11914 states and 16044 transitions. [2021-11-12 23:21:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:21:28,661 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, (40), 2 states have call predecessors, (40), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 340 [2021-11-12 23:21:28,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:28,698 INFO L225 Difference]: With dead ends: 11914 [2021-11-12 23:21:28,698 INFO L226 Difference]: Without dead ends: 6229 [2021-11-12 23:21:28,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1358 GetRequests, 1341 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:21:28,730 INFO L933 BasicCegarLoop]: 2180 mSDtfsCounter, 10 mSDsluCounter, 6537 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8717 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.19ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:28,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8717 Invalid, 14 Unknown, 0 Unchecked, 9.88ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 138.19ms Time] [2021-11-12 23:21:28,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6229 states. [2021-11-12 23:21:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6229 to 6219. [2021-11-12 23:21:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6219 states, 4199 states have (on average 1.2081447963800904) internal successors, (5073), 4351 states have internal predecessors, (5073), 1576 states have call successors, (1576), 431 states have call predecessors, (1576), 434 states have return successors, (1680), 1516 states have call predecessors, (1680), 1572 states have call successors, (1680) [2021-11-12 23:21:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 8329 transitions. [2021-11-12 23:21:29,843 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 8329 transitions. Word has length 340 [2021-11-12 23:21:29,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:29,844 INFO L470 AbstractCegarLoop]: Abstraction has 6219 states and 8329 transitions. [2021-11-12 23:21:29,844 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, (40), 2 states have call predecessors, (40), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-12 23:21:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 8329 transitions. [2021-11-12 23:21:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-11-12 23:21:29,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:29,848 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2021-11-12 23:21:29,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:30,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:30,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:30,263 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:21:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1503579416, now seen corresponding path program 1 times [2021-11-12 23:21:30,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:30,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101451269] [2021-11-12 23:21:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:30,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:30,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:30,267 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:30,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-12 23:21:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:33,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:21:33,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-11-12 23:21:34,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-11-12 23:21:35,659 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:35,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101451269] [2021-11-12 23:21:35,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101451269] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:35,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:21:35,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-12 23:21:35,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904915774] [2021-11-12 23:21:35,661 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:35,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:21:35,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:35,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:21:35,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:21:35,663 INFO L87 Difference]: Start difference. First operand 6219 states and 8329 transitions. Second operand has 12 states, 10 states have (on average 11.8) internal successors, (118), 8 states have internal predecessors, (118), 6 states have call successors, (45), 8 states have call predecessors, (45), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-12 23:21:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:37,297 INFO L93 Difference]: Finished difference Result 10630 states and 14044 transitions. [2021-11-12 23:21:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:21:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 11.8) internal successors, (118), 8 states have internal predecessors, (118), 6 states have call successors, (45), 8 states have call predecessors, (45), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 319 [2021-11-12 23:21:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:37,321 INFO L225 Difference]: With dead ends: 10630 [2021-11-12 23:21:37,321 INFO L226 Difference]: Without dead ends: 4927 [2021-11-12 23:21:37,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:21:37,340 INFO L933 BasicCegarLoop]: 1717 mSDtfsCounter, 37 mSDsluCounter, 13649 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 571.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 15366 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.33ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 596.88ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:37,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 15366 Invalid, 104 Unknown, 0 Unchecked, 15.33ms Time], IncrementalHoareTripleChecker [18 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 596.88ms Time] [2021-11-12 23:21:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2021-11-12 23:21:38,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 4921. [2021-11-12 23:21:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4921 states, 3260 states have (on average 1.1822085889570553) internal successors, (3854), 3377 states have internal predecessors, (3854), 1276 states have call successors, (1276), 375 states have call predecessors, (1276), 375 states have return successors, (1286), 1240 states have call predecessors, (1286), 1272 states have call successors, (1286) [2021-11-12 23:21:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4921 states to 4921 states and 6416 transitions. [2021-11-12 23:21:38,531 INFO L78 Accepts]: Start accepts. Automaton has 4921 states and 6416 transitions. Word has length 319 [2021-11-12 23:21:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:38,532 INFO L470 AbstractCegarLoop]: Abstraction has 4921 states and 6416 transitions. [2021-11-12 23:21:38,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 11.8) internal successors, (118), 8 states have internal predecessors, (118), 6 states have call successors, (45), 8 states have call predecessors, (45), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-12 23:21:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4921 states and 6416 transitions. [2021-11-12 23:21:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2021-11-12 23:21:38,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:38,538 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:38,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:38,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:38,755 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:21:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1348423461, now seen corresponding path program 1 times [2021-11-12 23:21:38,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:38,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970432285] [2021-11-12 23:21:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:38,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:38,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:38,760 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:38,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-12 23:21:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:41,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:21:41,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2021-11-12 23:21:46,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2021-11-12 23:21:48,832 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:48,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970432285] [2021-11-12 23:21:48,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970432285] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:48,832 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:21:48,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 23:21:48,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921464576] [2021-11-12 23:21:48,833 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:48,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:21:48,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:21:48,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:21:48,835 INFO L87 Difference]: Start difference. First operand 4921 states and 6416 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 5 states have internal predecessors, (173), 2 states have call successors, (97), 4 states have call predecessors, (97), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2021-11-12 23:21:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:50,226 INFO L93 Difference]: Finished difference Result 8494 states and 11032 transitions. [2021-11-12 23:21:50,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:21:50,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 5 states have internal predecessors, (173), 2 states have call successors, (97), 4 states have call predecessors, (97), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 399 [2021-11-12 23:21:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:50,260 INFO L225 Difference]: With dead ends: 8494 [2021-11-12 23:21:50,261 INFO L226 Difference]: Without dead ends: 8492 [2021-11-12 23:21:50,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:21:50,267 INFO L933 BasicCegarLoop]: 2138 mSDtfsCounter, 1522 mSDsluCounter, 7612 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 9750 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.77ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:50,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 9750 Invalid, 16 Unknown, 0 Unchecked, 13.77ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 82.75ms Time] [2021-11-12 23:21:50,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2021-11-12 23:21:51,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 8441. [2021-11-12 23:21:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8441 states, 5627 states have (on average 1.1855340323440555) internal successors, (6671), 5830 states have internal predecessors, (6671), 2129 states have call successors, (2129), 679 states have call predecessors, (2129), 675 states have return successors, (2179), 2050 states have call predecessors, (2179), 2125 states have call successors, (2179) [2021-11-12 23:21:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8441 states to 8441 states and 10979 transitions. [2021-11-12 23:21:51,858 INFO L78 Accepts]: Start accepts. Automaton has 8441 states and 10979 transitions. Word has length 399 [2021-11-12 23:21:51,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:51,859 INFO L470 AbstractCegarLoop]: Abstraction has 8441 states and 10979 transitions. [2021-11-12 23:21:51,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 5 states have internal predecessors, (173), 2 states have call successors, (97), 4 states have call predecessors, (97), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2021-11-12 23:21:51,859 INFO L276 IsEmpty]: Start isEmpty. Operand 8441 states and 10979 transitions. [2021-11-12 23:21:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2021-11-12 23:21:51,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:51,869 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 7, 7, 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, 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, 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] [2021-11-12 23:21:51,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:52,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:52,095 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:21:52,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1757670721, now seen corresponding path program 1 times [2021-11-12 23:21:52,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:52,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402866151] [2021-11-12 23:21:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:52,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:52,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:52,099 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:52,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-12 23:21:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:55,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-12 23:21:55,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 219 proven. 3 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2021-11-12 23:21:58,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 55 proven. 9 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2021-11-12 23:22:02,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:02,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402866151] [2021-11-12 23:22:02,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402866151] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:22:02,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1514414109] [2021-11-12 23:22:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:02,478 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:22:02,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:22:02,479 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:22:02,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2021-11-12 23:22:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:04,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:22:04,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2021-11-12 23:22:09,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2021-11-12 23:22:11,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1514414109] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:11,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:22:11,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [13, 13] total 15 [2021-11-12 23:22:11,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373235579] [2021-11-12 23:22:11,161 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:11,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:22:11,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:22:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:22:11,163 INFO L87 Difference]: Start difference. First operand 8441 states and 10979 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 3 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2021-11-12 23:22:12,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:12,449 INFO L93 Difference]: Finished difference Result 16802 states and 21843 transitions. [2021-11-12 23:22:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:22:12,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 3 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 440 [2021-11-12 23:22:12,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:12,491 INFO L225 Difference]: With dead ends: 16802 [2021-11-12 23:22:12,492 INFO L226 Difference]: Without dead ends: 8441 [2021-11-12 23:22:12,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1756 GetRequests, 1743 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:22:12,521 INFO L933 BasicCegarLoop]: 1727 mSDtfsCounter, 1578 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.18ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:12,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 1727 Invalid, 1 Unknown, 0 Unchecked, 4.03ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 6.18ms Time] [2021-11-12 23:22:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2021-11-12 23:22:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 8441. [2021-11-12 23:22:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8441 states, 5627 states have (on average 1.1853563177536877) internal successors, (6670), 5830 states have internal predecessors, (6670), 2129 states have call successors, (2129), 679 states have call predecessors, (2129), 675 states have return successors, (2179), 2050 states have call predecessors, (2179), 2125 states have call successors, (2179) [2021-11-12 23:22:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8441 states to 8441 states and 10978 transitions. [2021-11-12 23:22:13,948 INFO L78 Accepts]: Start accepts. Automaton has 8441 states and 10978 transitions. Word has length 440 [2021-11-12 23:22:13,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:13,950 INFO L470 AbstractCegarLoop]: Abstraction has 8441 states and 10978 transitions. [2021-11-12 23:22:13,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 3 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2021-11-12 23:22:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 8441 states and 10978 transitions. [2021-11-12 23:22:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2021-11-12 23:22:13,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:13,959 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 7, 7, 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, 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, 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] [2021-11-12 23:22:14,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:14,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:14,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:22:14,383 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:22:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:14,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1468851331, now seen corresponding path program 1 times [2021-11-12 23:22:14,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:14,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349031851] [2021-11-12 23:22:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:14,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:14,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:14,386 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:14,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-12 23:22:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:17,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-12 23:22:17,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 219 proven. 3 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2021-11-12 23:22:20,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 55 proven. 9 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2021-11-12 23:22:24,177 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:24,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349031851] [2021-11-12 23:22:24,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349031851] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:22:24,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [888751879] [2021-11-12 23:22:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:24,177 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:22:24,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:22:24,178 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:22:24,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2021-11-12 23:22:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:25,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:22:25,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2021-11-12 23:22:27,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2021-11-12 23:22:28,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [888751879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:28,767 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:22:28,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [13, 13] total 16 [2021-11-12 23:22:28,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590850191] [2021-11-12 23:22:28,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:28,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:22:28,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:28,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:22:28,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:22:28,769 INFO L87 Difference]: Start difference. First operand 8441 states and 10978 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-11-12 23:22:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:30,492 INFO L93 Difference]: Finished difference Result 17533 states and 22938 transitions. [2021-11-12 23:22:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:22:30,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 440 [2021-11-12 23:22:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:30,516 INFO L225 Difference]: With dead ends: 17533 [2021-11-12 23:22:30,516 INFO L226 Difference]: Without dead ends: 9171 [2021-11-12 23:22:30,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1757 GetRequests, 1742 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:22:30,538 INFO L933 BasicCegarLoop]: 2104 mSDtfsCounter, 432 mSDsluCounter, 3825 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.82ms SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 258.69ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:30,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 5929 Invalid, 169 Unknown, 0 Unchecked, 7.82ms Time], IncrementalHoareTripleChecker [161 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 258.69ms Time] [2021-11-12 23:22:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9171 states. [2021-11-12 23:22:31,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9171 to 8443. [2021-11-12 23:22:31,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8443 states, 5629 states have (on average 1.18529046011725) internal successors, (6672), 5832 states have internal predecessors, (6672), 2129 states have call successors, (2129), 679 states have call predecessors, (2129), 675 states have return successors, (2179), 2050 states have call predecessors, (2179), 2125 states have call successors, (2179) [2021-11-12 23:22:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8443 states to 8443 states and 10980 transitions. [2021-11-12 23:22:31,934 INFO L78 Accepts]: Start accepts. Automaton has 8443 states and 10980 transitions. Word has length 440 [2021-11-12 23:22:31,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:31,934 INFO L470 AbstractCegarLoop]: Abstraction has 8443 states and 10980 transitions. [2021-11-12 23:22:31,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-11-12 23:22:31,934 INFO L276 IsEmpty]: Start isEmpty. Operand 8443 states and 10980 transitions. [2021-11-12 23:22:31,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-12 23:22:31,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:31,941 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 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, 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] [2021-11-12 23:22:31,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (45)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:32,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:32,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:32,360 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:22:32,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash 439672958, now seen corresponding path program 1 times [2021-11-12 23:22:32,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:32,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51183218] [2021-11-12 23:22:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:32,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:32,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:32,364 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:32,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-12 23:22:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:35,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:22:35,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2021-11-12 23:22:37,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-11-12 23:22:42,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:42,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51183218] [2021-11-12 23:22:42,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51183218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:42,151 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:42,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-12 23:22:42,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791205337] [2021-11-12 23:22:42,152 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:42,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:22:42,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:42,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:22:42,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:22:42,155 INFO L87 Difference]: Start difference. First operand 8443 states and 10980 transitions. Second operand has 18 states, 18 states have (on average 12.0) internal successors, (216), 14 states have internal predecessors, (216), 4 states have call successors, (82), 2 states have call predecessors, (82), 6 states have return successors, (79), 8 states have call predecessors, (79), 4 states have call successors, (79) [2021-11-12 23:22:45,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:45,911 INFO L93 Difference]: Finished difference Result 17605 states and 23028 transitions. [2021-11-12 23:22:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:22:45,912 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.0) internal successors, (216), 14 states have internal predecessors, (216), 4 states have call successors, (82), 2 states have call predecessors, (82), 6 states have return successors, (79), 8 states have call predecessors, (79), 4 states have call successors, (79) Word has length 432 [2021-11-12 23:22:45,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:45,954 INFO L225 Difference]: With dead ends: 17605 [2021-11-12 23:22:45,955 INFO L226 Difference]: Without dead ends: 9214 [2021-11-12 23:22:45,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 865 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:22:45,977 INFO L933 BasicCegarLoop]: 2226 mSDtfsCounter, 365 mSDsluCounter, 24236 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1386.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 26462 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.51ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1519.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:45,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 26462 Invalid, 242 Unknown, 0 Unchecked, 32.51ms Time], IncrementalHoareTripleChecker [81 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1519.49ms Time] [2021-11-12 23:22:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9214 states. [2021-11-12 23:22:47,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9214 to 8445. [2021-11-12 23:22:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8445 states, 5631 states have (on average 1.1852246492630083) internal successors, (6674), 5833 states have internal predecessors, (6674), 2129 states have call successors, (2129), 679 states have call predecessors, (2129), 675 states have return successors, (2179), 2051 states have call predecessors, (2179), 2125 states have call successors, (2179) [2021-11-12 23:22:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8445 states to 8445 states and 10982 transitions. [2021-11-12 23:22:47,490 INFO L78 Accepts]: Start accepts. Automaton has 8445 states and 10982 transitions. Word has length 432 [2021-11-12 23:22:47,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:47,490 INFO L470 AbstractCegarLoop]: Abstraction has 8445 states and 10982 transitions. [2021-11-12 23:22:47,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.0) internal successors, (216), 14 states have internal predecessors, (216), 4 states have call successors, (82), 2 states have call predecessors, (82), 6 states have return successors, (79), 8 states have call predecessors, (79), 4 states have call successors, (79) [2021-11-12 23:22:47,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8445 states and 10982 transitions. [2021-11-12 23:22:47,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-12 23:22:47,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:47,498 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 7, 7, 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, 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, 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] [2021-11-12 23:22:47,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:47,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:47,715 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:22:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1382463505, now seen corresponding path program 1 times [2021-11-12 23:22:47,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:47,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105760805] [2021-11-12 23:22:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:47,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:47,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:47,720 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:47,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-12 23:22:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:51,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:22:51,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2021-11-12 23:22:52,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 877 trivial. 0 not checked. [2021-11-12 23:22:54,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:54,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105760805] [2021-11-12 23:22:54,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105760805] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:54,018 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:54,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:22:54,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309913074] [2021-11-12 23:22:54,019 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:54,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:22:54,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:22:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:54,021 INFO L87 Difference]: Start difference. First operand 8445 states and 10982 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 4 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2021-11-12 23:22:56,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:57,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:57,921 INFO L93 Difference]: Finished difference Result 16704 states and 21695 transitions. [2021-11-12 23:22:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:22:57,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 4 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) Word has length 453 [2021-11-12 23:22:57,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:57,947 INFO L225 Difference]: With dead ends: 16704 [2021-11-12 23:22:57,947 INFO L226 Difference]: Without dead ends: 8569 [2021-11-12 23:22:57,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:57,965 INFO L933 BasicCegarLoop]: 1745 mSDtfsCounter, 87 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2456.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.95ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2533.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:57,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 3444 Invalid, 50 Unknown, 0 Unchecked, 5.95ms Time], IncrementalHoareTripleChecker [22 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2533.90ms Time] [2021-11-12 23:22:57,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8569 states. [2021-11-12 23:22:59,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8569 to 8543. [2021-11-12 23:22:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8543 states, 5689 states have (on average 1.1850940411320092) internal successors, (6742), 5890 states have internal predecessors, (6742), 2169 states have call successors, (2169), 679 states have call predecessors, (2169), 675 states have return successors, (2220), 2091 states have call predecessors, (2220), 2165 states have call successors, (2220) [2021-11-12 23:22:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8543 states to 8543 states and 11131 transitions. [2021-11-12 23:22:59,339 INFO L78 Accepts]: Start accepts. Automaton has 8543 states and 11131 transitions. Word has length 453 [2021-11-12 23:22:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:59,339 INFO L470 AbstractCegarLoop]: Abstraction has 8543 states and 11131 transitions. [2021-11-12 23:22:59,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 4 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2021-11-12 23:22:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 8543 states and 11131 transitions. [2021-11-12 23:22:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-12 23:22:59,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:59,344 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:59,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-11-12 23:22:59,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:59,547 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:22:59,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:59,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1769171564, now seen corresponding path program 1 times [2021-11-12 23:22:59,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:59,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645649214] [2021-11-12 23:22:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:59,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:59,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:59,550 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:59,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-12 23:23:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:02,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:23:02,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1417 trivial. 0 not checked. [2021-11-12 23:23:03,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1417 trivial. 0 not checked. [2021-11-12 23:23:06,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:06,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645649214] [2021-11-12 23:23:06,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645649214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:23:06,506 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:23:06,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-12 23:23:06,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561481787] [2021-11-12 23:23:06,507 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:06,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 23:23:06,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:06,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 23:23:06,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:23:06,510 INFO L87 Difference]: Start difference. First operand 8543 states and 11131 transitions. Second operand has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (54), 7 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-12 23:23:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:09,206 INFO L93 Difference]: Finished difference Result 15896 states and 20745 transitions. [2021-11-12 23:23:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:23:09,213 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (54), 7 states have call predecessors, (54), 3 states have call successors, (54) Word has length 446 [2021-11-12 23:23:09,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:09,342 INFO L225 Difference]: With dead ends: 15896 [2021-11-12 23:23:09,342 INFO L226 Difference]: Without dead ends: 8783 [2021-11-12 23:23:09,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 877 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:23:09,356 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 26 mSDsluCounter, 18947 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 798.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 20671 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.98ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 848.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:09,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 20671 Invalid, 106 Unknown, 0 Unchecked, 22.98ms Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 848.80ms Time] [2021-11-12 23:23:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8783 states. [2021-11-12 23:23:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8783 to 8639. [2021-11-12 23:23:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8639 states, 5761 states have (on average 1.1827807672279118) internal successors, (6814), 5962 states have internal predecessors, (6814), 2177 states have call successors, (2177), 679 states have call predecessors, (2177), 691 states have return successors, (2287), 2115 states have call predecessors, (2287), 2173 states have call successors, (2287) [2021-11-12 23:23:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8639 states to 8639 states and 11278 transitions. [2021-11-12 23:23:10,766 INFO L78 Accepts]: Start accepts. Automaton has 8639 states and 11278 transitions. Word has length 446 [2021-11-12 23:23:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:10,767 INFO L470 AbstractCegarLoop]: Abstraction has 8639 states and 11278 transitions. [2021-11-12 23:23:10,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (54), 7 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-12 23:23:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 8639 states and 11278 transitions. [2021-11-12 23:23:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-12 23:23:10,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:10,772 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:10,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:10,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:10,973 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:23:10,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:10,973 INFO L85 PathProgramCache]: Analyzing trace with hash 959824938, now seen corresponding path program 1 times [2021-11-12 23:23:10,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:10,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438331745] [2021-11-12 23:23:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:10,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:10,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:10,976 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:10,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-11-12 23:23:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:13,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:23:13,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:16,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-12 23:23:16,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-11-12 23:23:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2021-11-12 23:23:16,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1417 trivial. 0 not checked. [2021-11-12 23:23:17,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:17,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438331745] [2021-11-12 23:23:17,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438331745] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:23:17,555 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:23:17,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-11-12 23:23:17,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740870540] [2021-11-12 23:23:17,556 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:17,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:23:17,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:23:17,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:23:17,558 INFO L87 Difference]: Start difference. First operand 8639 states and 11278 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 4 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-12 23:23:19,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:22,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:24,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:26,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:28,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:30,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:33,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:36,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:39,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:41,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:46,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:47,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:47,803 INFO L93 Difference]: Finished difference Result 16384 states and 21177 transitions. [2021-11-12 23:23:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:23:47,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 4 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 446 [2021-11-12 23:23:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:47,840 INFO L225 Difference]: With dead ends: 16384 [2021-11-12 23:23:47,840 INFO L226 Difference]: Without dead ends: 9175 [2021-11-12 23:23:47,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 884 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:23:47,861 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 28 mSDsluCounter, 6579 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27489.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 8351 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.72ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 28388.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:47,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 8351 Invalid, 382 Unknown, 0 Unchecked, 18.72ms Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 7 Unknown, 199 Unchecked, 28388.25ms Time] [2021-11-12 23:23:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9175 states. [2021-11-12 23:23:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9175 to 9143. [2021-11-12 23:23:49,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9143 states, 6089 states have (on average 1.174905567416653) internal successors, (7154), 6290 states have internal predecessors, (7154), 2265 states have call successors, (2265), 759 states have call predecessors, (2265), 779 states have return successors, (2356), 2211 states have call predecessors, (2356), 2261 states have call successors, (2356) [2021-11-12 23:23:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9143 states to 9143 states and 11775 transitions. [2021-11-12 23:23:49,318 INFO L78 Accepts]: Start accepts. Automaton has 9143 states and 11775 transitions. Word has length 446 [2021-11-12 23:23:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:49,319 INFO L470 AbstractCegarLoop]: Abstraction has 9143 states and 11775 transitions. [2021-11-12 23:23:49,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 4 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-12 23:23:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 9143 states and 11775 transitions. [2021-11-12 23:23:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2021-11-12 23:23:49,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:49,324 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 9, 9, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-12 23:23:49,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-11-12 23:23:49,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:49,525 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:23:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:49,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1577847461, now seen corresponding path program 1 times [2021-11-12 23:23:49,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:49,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041378396] [2021-11-12 23:23:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:49,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:49,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:49,529 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:49,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-12 23:23:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:52,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 2113 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:23:52,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2021-11-12 23:23:55,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2021-11-12 23:23:59,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:59,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041378396] [2021-11-12 23:23:59,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041378396] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:23:59,820 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:23:59,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-12 23:23:59,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068956182] [2021-11-12 23:23:59,820 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:59,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:23:59,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:59,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:23:59,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:23:59,822 INFO L87 Difference]: Start difference. First operand 9143 states and 11775 transitions. Second operand has 18 states, 18 states have (on average 10.166666666666666) internal successors, (183), 14 states have internal predecessors, (183), 4 states have call successors, (72), 2 states have call predecessors, (72), 6 states have return successors, (74), 8 states have call predecessors, (74), 4 states have call successors, (74) [2021-11-12 23:24:03,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:08,397 INFO L93 Difference]: Finished difference Result 22291 states and 29640 transitions. [2021-11-12 23:24:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:24:08,398 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.166666666666666) internal successors, (183), 14 states have internal predecessors, (183), 4 states have call successors, (72), 2 states have call predecessors, (72), 6 states have return successors, (74), 8 states have call predecessors, (74), 4 states have call successors, (74) Word has length 493 [2021-11-12 23:24:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:08,440 INFO L225 Difference]: With dead ends: 22291 [2021-11-12 23:24:08,440 INFO L226 Difference]: Without dead ends: 13240 [2021-11-12 23:24:08,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 968 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:24:08,463 INFO L933 BasicCegarLoop]: 2607 mSDtfsCounter, 456 mSDsluCounter, 30816 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 138 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4500.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 33423 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.29ms SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4785.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:08,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 33423 Invalid, 369 Unknown, 0 Unchecked, 48.29ms Time], IncrementalHoareTripleChecker [138 Valid, 230 Invalid, 1 Unknown, 0 Unchecked, 4785.60ms Time] [2021-11-12 23:24:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13240 states. [2021-11-12 23:24:10,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13240 to 9178. [2021-11-12 23:24:10,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9178 states, 6115 states have (on average 1.1741618969746526) internal successors, (7180), 6315 states have internal predecessors, (7180), 2268 states have call successors, (2268), 759 states have call predecessors, (2268), 785 states have return successors, (2368), 2221 states have call predecessors, (2368), 2264 states have call successors, (2368) [2021-11-12 23:24:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9178 states to 9178 states and 11816 transitions. [2021-11-12 23:24:10,207 INFO L78 Accepts]: Start accepts. Automaton has 9178 states and 11816 transitions. Word has length 493 [2021-11-12 23:24:10,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:10,209 INFO L470 AbstractCegarLoop]: Abstraction has 9178 states and 11816 transitions. [2021-11-12 23:24:10,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.166666666666666) internal successors, (183), 14 states have internal predecessors, (183), 4 states have call successors, (72), 2 states have call predecessors, (72), 6 states have return successors, (74), 8 states have call predecessors, (74), 4 states have call successors, (74) [2021-11-12 23:24:10,210 INFO L276 IsEmpty]: Start isEmpty. Operand 9178 states and 11816 transitions. [2021-11-12 23:24:10,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2021-11-12 23:24:10,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:10,215 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 10, 10, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-12 23:24:10,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:10,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:10,416 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:24:10,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:10,417 INFO L85 PathProgramCache]: Analyzing trace with hash 475450466, now seen corresponding path program 1 times [2021-11-12 23:24:10,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:10,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035897460] [2021-11-12 23:24:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:10,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:10,420 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:10,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-11-12 23:24:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:14,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 2157 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 23:24:14,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2021-11-12 23:24:16,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2021-11-12 23:24:19,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:19,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035897460] [2021-11-12 23:24:19,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035897460] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:24:19,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:24:19,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2021-11-12 23:24:19,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732719989] [2021-11-12 23:24:19,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:19,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:24:19,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:19,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:24:19,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:24:19,255 INFO L87 Difference]: Start difference. First operand 9178 states and 11816 transitions. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 3 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (54), 4 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-12 23:24:22,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:26,346 INFO L93 Difference]: Finished difference Result 20336 states and 26676 transitions. [2021-11-12 23:24:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:24:26,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 3 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (54), 4 states have call predecessors, (54), 3 states have call successors, (54) Word has length 514 [2021-11-12 23:24:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:26,374 INFO L225 Difference]: With dead ends: 20336 [2021-11-12 23:24:26,374 INFO L226 Difference]: Without dead ends: 11269 [2021-11-12 23:24:26,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 1012 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:24:26,390 INFO L933 BasicCegarLoop]: 2216 mSDtfsCounter, 1057 mSDsluCounter, 13752 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 699 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3291.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 15968 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.74ms SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3493.19ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:26,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 15968 Invalid, 750 Unknown, 0 Unchecked, 25.74ms Time], IncrementalHoareTripleChecker [699 Valid, 50 Invalid, 1 Unknown, 0 Unchecked, 3493.19ms Time] [2021-11-12 23:24:26,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11269 states. [2021-11-12 23:24:27,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11269 to 9230. [2021-11-12 23:24:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9230 states, 6147 states have (on average 1.1732552464616886) internal successors, (7212), 6347 states have internal predecessors, (7212), 2284 states have call successors, (2284), 759 states have call predecessors, (2284), 789 states have return successors, (2411), 2241 states have call predecessors, (2411), 2280 states have call successors, (2411) [2021-11-12 23:24:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 11907 transitions. [2021-11-12 23:24:28,017 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 11907 transitions. Word has length 514 [2021-11-12 23:24:28,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:28,018 INFO L470 AbstractCegarLoop]: Abstraction has 9230 states and 11907 transitions. [2021-11-12 23:24:28,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 3 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (54), 4 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-12 23:24:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 11907 transitions. [2021-11-12 23:24:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2021-11-12 23:24:28,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:28,024 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:28,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2021-11-12 23:24:28,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:28,225 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:24:28,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:28,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1198714977, now seen corresponding path program 1 times [2021-11-12 23:24:28,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:28,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202857478] [2021-11-12 23:24:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:28,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:28,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:28,232 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:28,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-11-12 23:24:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:31,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-12 23:24:31,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2021-11-12 23:24:36,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2021-11-12 23:24:48,136 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:48,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202857478] [2021-11-12 23:24:48,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202857478] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:24:48,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:24:48,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [16] total 31 [2021-11-12 23:24:48,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175053500] [2021-11-12 23:24:48,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:48,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:24:48,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:48,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:24:48,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2021-11-12 23:24:48,140 INFO L87 Difference]: Start difference. First operand 9230 states and 11907 transitions. Second operand has 18 states, 16 states have (on average 11.8125) internal successors, (189), 14 states have internal predecessors, (189), 6 states have call successors, (65), 2 states have call predecessors, (65), 6 states have return successors, (60), 9 states have call predecessors, (60), 6 states have call successors, (60) [2021-11-12 23:24:56,223 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 [] [2021-11-12 23:24:59,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:25:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:01,366 INFO L93 Difference]: Finished difference Result 18010 states and 23129 transitions. [2021-11-12 23:25:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 23:25:01,366 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 11.8125) internal successors, (189), 14 states have internal predecessors, (189), 6 states have call successors, (65), 2 states have call predecessors, (65), 6 states have return successors, (60), 9 states have call predecessors, (60), 6 states have call successors, (60) Word has length 520 [2021-11-12 23:25:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:01,392 INFO L225 Difference]: With dead ends: 18010 [2021-11-12 23:25:01,393 INFO L226 Difference]: Without dead ends: 9258 [2021-11-12 23:25:01,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2021-11-12 23:25:01,415 INFO L933 BasicCegarLoop]: 1707 mSDtfsCounter, 24 mSDsluCounter, 23818 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7790.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 25525 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.59ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8024.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:01,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 25525 Invalid, 558 Unknown, 0 Unchecked, 30.59ms Time], IncrementalHoareTripleChecker [9 Valid, 548 Invalid, 1 Unknown, 0 Unchecked, 8024.87ms Time] [2021-11-12 23:25:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9258 states. [2021-11-12 23:25:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9258 to 9230. [2021-11-12 23:25:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9230 states, 6147 states have (on average 1.172441841548723) internal successors, (7207), 6347 states have internal predecessors, (7207), 2284 states have call successors, (2284), 759 states have call predecessors, (2284), 789 states have return successors, (2411), 2241 states have call predecessors, (2411), 2280 states have call successors, (2411) [2021-11-12 23:25:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 11902 transitions. [2021-11-12 23:25:03,103 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 11902 transitions. Word has length 520 [2021-11-12 23:25:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:03,104 INFO L470 AbstractCegarLoop]: Abstraction has 9230 states and 11902 transitions. [2021-11-12 23:25:03,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 11.8125) internal successors, (189), 14 states have internal predecessors, (189), 6 states have call successors, (65), 2 states have call predecessors, (65), 6 states have return successors, (60), 9 states have call predecessors, (60), 6 states have call successors, (60) [2021-11-12 23:25:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 11902 transitions. [2021-11-12 23:25:03,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2021-11-12 23:25:03,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:03,110 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-12 23:25:03,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:03,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:03,311 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:25:03,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:03,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1208168548, now seen corresponding path program 1 times [2021-11-12 23:25:03,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:03,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261215643] [2021-11-12 23:25:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:03,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:03,316 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:03,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-11-12 23:25:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:06,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:25:06,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2021-11-12 23:25:08,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-11-12 23:25:10,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:10,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261215643] [2021-11-12 23:25:10,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261215643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:10,033 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:10,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:25:10,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044479371] [2021-11-12 23:25:10,033 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:10,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:25:10,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:10,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:25:10,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:25:10,035 INFO L87 Difference]: Start difference. First operand 9230 states and 11902 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2021-11-12 23:25:12,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:25:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:16,080 INFO L93 Difference]: Finished difference Result 21451 states and 28419 transitions. [2021-11-12 23:25:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:25:16,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) Word has length 499 [2021-11-12 23:25:16,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:16,115 INFO L225 Difference]: With dead ends: 21451 [2021-11-12 23:25:16,116 INFO L226 Difference]: Without dead ends: 12811 [2021-11-12 23:25:16,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 998 GetRequests, 993 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:25:16,133 INFO L933 BasicCegarLoop]: 2214 mSDtfsCounter, 720 mSDsluCounter, 5977 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 373 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2960.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 8191 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.56ms SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3120.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:16,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 8191 Invalid, 394 Unknown, 0 Unchecked, 11.56ms Time], IncrementalHoareTripleChecker [373 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 3120.89ms Time] [2021-11-12 23:25:16,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12811 states. [2021-11-12 23:25:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12811 to 9285. [2021-11-12 23:25:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9285 states, 6184 states have (on average 1.1714100905562743) internal successors, (7244), 6384 states have internal predecessors, (7244), 2302 states have call successors, (2302), 759 states have call predecessors, (2302), 789 states have return successors, (2431), 2261 states have call predecessors, (2431), 2298 states have call successors, (2431) [2021-11-12 23:25:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9285 states to 9285 states and 11977 transitions. [2021-11-12 23:25:17,777 INFO L78 Accepts]: Start accepts. Automaton has 9285 states and 11977 transitions. Word has length 499 [2021-11-12 23:25:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:17,778 INFO L470 AbstractCegarLoop]: Abstraction has 9285 states and 11977 transitions. [2021-11-12 23:25:17,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2021-11-12 23:25:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 9285 states and 11977 transitions. [2021-11-12 23:25:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2021-11-12 23:25:17,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:17,784 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 11, 11, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-12 23:25:17,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-11-12 23:25:17,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:17,987 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:25:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:17,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1666991892, now seen corresponding path program 1 times [2021-11-12 23:25:17,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:17,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343755472] [2021-11-12 23:25:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:17,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:17,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:17,991 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:17,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-12 23:25:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:21,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2189 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:25:21,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2021-11-12 23:25:24,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 57 proven. 8 refuted. 0 times theorem prover too weak. 1447 trivial. 0 not checked. [2021-11-12 23:25:29,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:29,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343755472] [2021-11-12 23:25:29,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343755472] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:25:29,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:25:29,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-12 23:25:29,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495790260] [2021-11-12 23:25:29,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:29,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:25:29,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:29,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:25:29,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:25:29,166 INFO L87 Difference]: Start difference. First operand 9285 states and 11977 transitions. Second operand has 12 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 4 states have call successors, (58), 2 states have call predecessors, (58), 5 states have return successors, (57), 6 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-12 23:25:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:34,505 INFO L93 Difference]: Finished difference Result 16944 states and 22050 transitions. [2021-11-12 23:25:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 23:25:34,506 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 4 states have call successors, (58), 2 states have call predecessors, (58), 5 states have return successors, (57), 6 states have call predecessors, (57), 4 states have call successors, (57) Word has length 530 [2021-11-12 23:25:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:34,528 INFO L225 Difference]: With dead ends: 16944 [2021-11-12 23:25:34,528 INFO L226 Difference]: Without dead ends: 7823 [2021-11-12 23:25:34,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 1041 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:25:34,546 INFO L933 BasicCegarLoop]: 2096 mSDtfsCounter, 243 mSDsluCounter, 16380 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2662.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 18476 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.29ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2799.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:34,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 18476 Invalid, 359 Unknown, 0 Unchecked, 25.29ms Time], IncrementalHoareTripleChecker [3 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 2799.95ms Time] [2021-11-12 23:25:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7823 states. [2021-11-12 23:25:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7823 to 6726. [2021-11-12 23:25:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6726 states, 4485 states have (on average 1.1714604236343367) internal successors, (5254), 4634 states have internal predecessors, (5254), 1651 states have call successors, (1651), 557 states have call predecessors, (1651), 580 states have return successors, (1739), 1620 states have call predecessors, (1739), 1649 states have call successors, (1739) [2021-11-12 23:25:35,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6726 states to 6726 states and 8644 transitions. [2021-11-12 23:25:35,842 INFO L78 Accepts]: Start accepts. Automaton has 6726 states and 8644 transitions. Word has length 530 [2021-11-12 23:25:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:35,843 INFO L470 AbstractCegarLoop]: Abstraction has 6726 states and 8644 transitions. [2021-11-12 23:25:35,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 4 states have call successors, (58), 2 states have call predecessors, (58), 5 states have return successors, (57), 6 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-12 23:25:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6726 states and 8644 transitions. [2021-11-12 23:25:35,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2021-11-12 23:25:35,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:35,849 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 11, 11, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-12 23:25:35,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:36,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:36,050 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:25:36,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:36,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2041699182, now seen corresponding path program 1 times [2021-11-12 23:25:36,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:36,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833959089] [2021-11-12 23:25:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:36,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:36,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:36,056 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:36,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-11-12 23:25:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:39,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2190 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:25:39,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 337 refuted. 0 times theorem prover too weak. 1175 trivial. 0 not checked. [2021-11-12 23:25:46,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-11-12 23:25:49,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:49,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833959089] [2021-11-12 23:25:49,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833959089] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:25:49,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:25:49,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-11-12 23:25:49,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333762178] [2021-11-12 23:25:49,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:49,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:25:49,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:49,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:25:49,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:25:49,586 INFO L87 Difference]: Start difference. First operand 6726 states and 8644 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-12 23:25:51,722 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 [] [2021-11-12 23:26:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:05,944 INFO L93 Difference]: Finished difference Result 15762 states and 20125 transitions. [2021-11-12 23:26:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:26:05,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 530 [2021-11-12 23:26:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:05,977 INFO L225 Difference]: With dead ends: 15762 [2021-11-12 23:26:05,978 INFO L226 Difference]: Without dead ends: 15760 [2021-11-12 23:26:05,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1052 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:26:05,984 INFO L933 BasicCegarLoop]: 3535 mSDtfsCounter, 3118 mSDsluCounter, 6219 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12357.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3118 SdHoareTripleChecker+Valid, 9754 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.40ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13314.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:05,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3118 Valid, 9754 Invalid, 1307 Unknown, 0 Unchecked, 32.40ms Time], IncrementalHoareTripleChecker [5 Valid, 1301 Invalid, 1 Unknown, 0 Unchecked, 13314.87ms Time] [2021-11-12 23:26:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15760 states. [2021-11-12 23:26:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15760 to 14506. [2021-11-12 23:26:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14506 states, 9689 states have (on average 1.1817525028382703) internal successors, (11450), 10028 states have internal predecessors, (11450), 3571 states have call successors, (3571), 1181 states have call predecessors, (3571), 1236 states have return successors, (3772), 3488 states have call predecessors, (3772), 3569 states have call successors, (3772) [2021-11-12 23:26:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14506 states to 14506 states and 18793 transitions. [2021-11-12 23:26:08,223 INFO L78 Accepts]: Start accepts. Automaton has 14506 states and 18793 transitions. Word has length 530 [2021-11-12 23:26:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:08,224 INFO L470 AbstractCegarLoop]: Abstraction has 14506 states and 18793 transitions. [2021-11-12 23:26:08,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-12 23:26:08,225 INFO L276 IsEmpty]: Start isEmpty. Operand 14506 states and 18793 transitions. [2021-11-12 23:26:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-11-12 23:26:08,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:08,231 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:08,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:08,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:08,455 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:26:08,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:08,455 INFO L85 PathProgramCache]: Analyzing trace with hash -558104637, now seen corresponding path program 1 times [2021-11-12 23:26:08,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:08,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264930610] [2021-11-12 23:26:08,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:08,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:08,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:08,459 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:08,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-11-12 23:26:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:10,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:26:10,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2021-11-12 23:26:12,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1417 trivial. 0 not checked. [2021-11-12 23:26:13,158 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:13,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264930610] [2021-11-12 23:26:13,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264930610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:13,158 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:13,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:26:13,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318227597] [2021-11-12 23:26:13,159 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:13,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:26:13,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:13,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:26:13,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:26:13,160 INFO L87 Difference]: Start difference. First operand 14506 states and 18793 transitions. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 6 states have internal predecessors, (180), 3 states have call successors, (65), 4 states have call predecessors, (65), 3 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-12 23:26:15,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:26:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:18,392 INFO L93 Difference]: Finished difference Result 14572 states and 18859 transitions. [2021-11-12 23:26:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:26:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 6 states have internal predecessors, (180), 3 states have call successors, (65), 4 states have call predecessors, (65), 3 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 457 [2021-11-12 23:26:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:18,424 INFO L225 Difference]: With dead ends: 14572 [2021-11-12 23:26:18,424 INFO L226 Difference]: Without dead ends: 14570 [2021-11-12 23:26:18,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 906 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:26:18,429 INFO L933 BasicCegarLoop]: 2509 mSDtfsCounter, 1894 mSDsluCounter, 9251 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 447 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2757.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 11760 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.66ms SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2957.88ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:18,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 11760 Invalid, 462 Unknown, 0 Unchecked, 15.66ms Time], IncrementalHoareTripleChecker [447 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2957.88ms Time] [2021-11-12 23:26:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14570 states. [2021-11-12 23:26:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14570 to 14541. [2021-11-12 23:26:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14541 states, 9710 states have (on average 1.1813594232749742) internal successors, (11471), 10056 states have internal predecessors, (11471), 3578 states have call successors, (3578), 1188 states have call predecessors, (3578), 1243 states have return successors, (3779), 3488 states have call predecessors, (3779), 3576 states have call successors, (3779) [2021-11-12 23:26:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14541 states to 14541 states and 18828 transitions. [2021-11-12 23:26:20,689 INFO L78 Accepts]: Start accepts. Automaton has 14541 states and 18828 transitions. Word has length 457 [2021-11-12 23:26:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:20,690 INFO L470 AbstractCegarLoop]: Abstraction has 14541 states and 18828 transitions. [2021-11-12 23:26:20,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 6 states have internal predecessors, (180), 3 states have call successors, (65), 4 states have call predecessors, (65), 3 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-12 23:26:20,690 INFO L276 IsEmpty]: Start isEmpty. Operand 14541 states and 18828 transitions. [2021-11-12 23:26:20,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2021-11-12 23:26:20,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:20,695 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:20,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:20,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:20,895 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:26:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1362076295, now seen corresponding path program 1 times [2021-11-12 23:26:20,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:20,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142319537] [2021-11-12 23:26:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:20,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:20,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:20,898 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:20,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-11-12 23:26:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:23,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:26:23,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2392 trivial. 0 not checked. [2021-11-12 23:26:24,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2392 trivial. 0 not checked. [2021-11-12 23:26:26,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:26,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142319537] [2021-11-12 23:26:26,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142319537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:26,165 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:26,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 23:26:26,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699133753] [2021-11-12 23:26:26,165 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:26,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:26:26,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:26:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:26:26,167 INFO L87 Difference]: Start difference. First operand 14541 states and 18828 transitions. Second operand has 10 states, 10 states have (on average 17.4) internal successors, (174), 8 states have internal predecessors, (174), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (61), 4 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-12 23:26:28,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:28,749 INFO L93 Difference]: Finished difference Result 27592 states and 35998 transitions. [2021-11-12 23:26:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:26:28,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 8 states have internal predecessors, (174), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (61), 4 states have call predecessors, (61), 2 states have call successors, (61) Word has length 552 [2021-11-12 23:26:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:28,786 INFO L225 Difference]: With dead ends: 27592 [2021-11-12 23:26:28,786 INFO L226 Difference]: Without dead ends: 14919 [2021-11-12 23:26:28,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1104 GetRequests, 1094 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:26:28,812 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 24 mSDsluCounter, 12137 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 209.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 13871 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.32ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 219.44ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:28,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 13871 Invalid, 37 Unknown, 0 Unchecked, 11.32ms Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 219.44ms Time] [2021-11-12 23:26:28,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14919 states. [2021-11-12 23:26:31,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14919 to 14744. [2021-11-12 23:26:31,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14744 states, 9871 states have (on average 1.1826562658291966) internal successors, (11674), 10238 states have internal predecessors, (11674), 3606 states have call successors, (3606), 1188 states have call predecessors, (3606), 1257 states have return successors, (3835), 3523 states have call predecessors, (3835), 3604 states have call successors, (3835) [2021-11-12 23:26:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14744 states to 14744 states and 19115 transitions. [2021-11-12 23:26:31,111 INFO L78 Accepts]: Start accepts. Automaton has 14744 states and 19115 transitions. Word has length 552 [2021-11-12 23:26:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:31,112 INFO L470 AbstractCegarLoop]: Abstraction has 14744 states and 19115 transitions. [2021-11-12 23:26:31,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 8 states have internal predecessors, (174), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (61), 4 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-12 23:26:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 14744 states and 19115 transitions. [2021-11-12 23:26:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2021-11-12 23:26:31,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:31,121 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:31,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-11-12 23:26:31,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:31,343 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:26:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1092082802, now seen corresponding path program 1 times [2021-11-12 23:26:31,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:31,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694148757] [2021-11-12 23:26:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:31,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:31,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:31,435 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:31,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-11-12 23:26:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:33,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:33,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1621 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-12 23:26:34,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1621 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-12 23:26:35,826 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:35,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694148757] [2021-11-12 23:26:35,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694148757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:35,826 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:35,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:26:35,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541061188] [2021-11-12 23:26:35,827 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:35,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:26:35,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:26:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:26:35,828 INFO L87 Difference]: Start difference. First operand 14744 states and 19115 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (57), 2 states have call predecessors, (57), 1 states have call successors, (57) [2021-11-12 23:26:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:38,472 INFO L93 Difference]: Finished difference Result 27704 states and 36054 transitions. [2021-11-12 23:26:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:26:38,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (57), 2 states have call predecessors, (57), 1 states have call successors, (57) Word has length 484 [2021-11-12 23:26:38,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:38,527 INFO L225 Difference]: With dead ends: 27704 [2021-11-12 23:26:38,527 INFO L226 Difference]: Without dead ends: 14828 [2021-11-12 23:26:38,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 962 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:26:38,558 INFO L933 BasicCegarLoop]: 1725 mSDtfsCounter, 6 mSDsluCounter, 3447 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5172 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.31ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:38,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 5172 Invalid, 17 Unknown, 0 Unchecked, 6.31ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 172.45ms Time] [2021-11-12 23:26:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14828 states. [2021-11-12 23:26:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14828 to 14800. [2021-11-12 23:26:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14800 states, 9913 states have (on average 1.184706950469081) internal successors, (11744), 10294 states have internal predecessors, (11744), 3606 states have call successors, (3606), 1188 states have call predecessors, (3606), 1271 states have return successors, (3849), 3523 states have call predecessors, (3849), 3604 states have call successors, (3849) [2021-11-12 23:26:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14800 states to 14800 states and 19199 transitions. [2021-11-12 23:26:40,985 INFO L78 Accepts]: Start accepts. Automaton has 14800 states and 19199 transitions. Word has length 484 [2021-11-12 23:26:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:40,986 INFO L470 AbstractCegarLoop]: Abstraction has 14800 states and 19199 transitions. [2021-11-12 23:26:40,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (57), 2 states have call predecessors, (57), 1 states have call successors, (57) [2021-11-12 23:26:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 14800 states and 19199 transitions. [2021-11-12 23:26:40,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-11-12 23:26:40,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:40,992 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:41,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:41,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:41,192 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:26:41,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1210666994, now seen corresponding path program 1 times [2021-11-12 23:26:41,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:41,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162525023] [2021-11-12 23:26:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:41,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:41,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:41,196 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:41,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-11-12 23:26:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:43,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:26:43,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-12 23:26:44,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-12 23:26:46,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:46,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162525023] [2021-11-12 23:26:46,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162525023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:46,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [262413873] [2021-11-12 23:26:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:46,303 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:46,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:26:46,304 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:26:46,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2021-11-12 23:26:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:47,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:47,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2021-11-12 23:26:48,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2021-11-12 23:26:50,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [262413873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:50,054 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:26:50,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 6] total 14 [2021-11-12 23:26:50,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201592394] [2021-11-12 23:26:50,055 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:50,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:26:50,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:50,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:26:50,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:26:50,056 INFO L87 Difference]: Start difference. First operand 14800 states and 19199 transitions. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 4 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-12 23:26:53,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:53,585 INFO L93 Difference]: Finished difference Result 30791 states and 40826 transitions. [2021-11-12 23:26:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:26:53,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 4 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 486 [2021-11-12 23:26:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:53,642 INFO L225 Difference]: With dead ends: 30791 [2021-11-12 23:26:53,642 INFO L226 Difference]: Without dead ends: 17859 [2021-11-12 23:26:53,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1941 GetRequests, 1928 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:26:53,686 INFO L933 BasicCegarLoop]: 1785 mSDtfsCounter, 326 mSDsluCounter, 6965 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 640.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 8750 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.73ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 692.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:53,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 8750 Invalid, 117 Unknown, 0 Unchecked, 11.73ms Time], IncrementalHoareTripleChecker [52 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 692.24ms Time] [2021-11-12 23:26:53,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17859 states. [2021-11-12 23:26:56,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17859 to 15108. [2021-11-12 23:26:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15108 states, 10151 states have (on average 1.1872721899320264) internal successors, (12052), 10546 states have internal predecessors, (12052), 3676 states have call successors, (3676), 1188 states have call predecessors, (3676), 1271 states have return successors, (3926), 3593 states have call predecessors, (3926), 3674 states have call successors, (3926) [2021-11-12 23:26:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15108 states to 15108 states and 19654 transitions. [2021-11-12 23:26:56,554 INFO L78 Accepts]: Start accepts. Automaton has 15108 states and 19654 transitions. Word has length 486 [2021-11-12 23:26:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:56,555 INFO L470 AbstractCegarLoop]: Abstraction has 15108 states and 19654 transitions. [2021-11-12 23:26:56,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 4 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-12 23:26:56,555 INFO L276 IsEmpty]: Start isEmpty. Operand 15108 states and 19654 transitions. [2021-11-12 23:26:56,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2021-11-12 23:26:56,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:56,566 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-12 23:26:56,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:56,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (60)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:56,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:56,983 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:26:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:56,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1145123909, now seen corresponding path program 1 times [2021-11-12 23:26:56,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:56,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497374814] [2021-11-12 23:26:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:56,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:56,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:56,986 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:56,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-11-12 23:26:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:59,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:26:59,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 89 proven. 3 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-12 23:27:00,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1710 trivial. 0 not checked. [2021-11-12 23:27:02,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:02,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497374814] [2021-11-12 23:27:02,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497374814] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:27:02,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [890078792] [2021-11-12 23:27:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:02,476 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:02,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:27:02,487 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:27:02,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (62)] Waiting until timeout for monitored process [2021-11-12 23:27:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:03,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:27:03,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:04,945 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-12 23:27:04,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 20 [2021-11-12 23:27:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1713 trivial. 0 not checked. [2021-11-12 23:27:05,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1713 trivial. 0 not checked. [2021-11-12 23:27:08,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [890078792] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:08,772 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:27:08,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6] total 15 [2021-11-12 23:27:08,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568732825] [2021-11-12 23:27:08,773 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:08,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:27:08,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:08,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:27:08,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=163, Unknown=1, NotChecked=0, Total=210 [2021-11-12 23:27:08,774 INFO L87 Difference]: Start difference. First operand 15108 states and 19654 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2021-11-12 23:27:10,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:13,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:15,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:17,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:19,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:23,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:25,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:28,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:30,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:32,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:37,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:37,029 INFO L93 Difference]: Finished difference Result 28474 states and 37202 transitions. [2021-11-12 23:27:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:27:37,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 535 [2021-11-12 23:27:37,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:37,085 INFO L225 Difference]: With dead ends: 28474 [2021-11-12 23:27:37,085 INFO L226 Difference]: Without dead ends: 15234 [2021-11-12 23:27:37,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2137 GetRequests, 2123 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=52, Invalid=187, Unknown=1, NotChecked=0, Total=240 [2021-11-12 23:27:37,123 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 16 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25036.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6775 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 25830.51ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:37,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 6775 Invalid, 166 Unknown, 0 Unchecked, 9.73ms Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 7 Unknown, 7 Unchecked, 25830.51ms Time] [2021-11-12 23:27:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15234 states. [2021-11-12 23:27:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15234 to 15220. [2021-11-12 23:27:39,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15220 states, 10249 states have (on average 1.1895794711679188) internal successors, (12192), 10644 states have internal predecessors, (12192), 3690 states have call successors, (3690), 1188 states have call predecessors, (3690), 1271 states have return successors, (3940), 3607 states have call predecessors, (3940), 3688 states have call successors, (3940) [2021-11-12 23:27:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15220 states to 15220 states and 19822 transitions. [2021-11-12 23:27:39,429 INFO L78 Accepts]: Start accepts. Automaton has 15220 states and 19822 transitions. Word has length 535 [2021-11-12 23:27:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:39,429 INFO L470 AbstractCegarLoop]: Abstraction has 15220 states and 19822 transitions. [2021-11-12 23:27:39,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2021-11-12 23:27:39,429 INFO L276 IsEmpty]: Start isEmpty. Operand 15220 states and 19822 transitions. [2021-11-12 23:27:39,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2021-11-12 23:27:39,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:39,436 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-12 23:27:39,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:39,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (62)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:39,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:39,840 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-12 23:27:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1044300959, now seen corresponding path program 1 times [2021-11-12 23:27:39,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:39,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340890533] [2021-11-12 23:27:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:39,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:39,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:39,843 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:39,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-11-12 23:27:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:42,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:27:42,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 89 proven. 3 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-12 23:27:43,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1710 trivial. 0 not checked. [2021-11-12 23:27:45,284 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:45,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340890533] [2021-11-12 23:27:45,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340890533] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:27:45,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1456949204] [2021-11-12 23:27:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:45,284 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:45,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:27:45,287 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:27:45,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af8be25-8848-43f3-b7ba-55841e58663e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (64)] Waiting until timeout for monitored process [2021-11-12 23:27:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:46,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:27:46,644 INFO L286 TraceCheckSpWp]: Computing forward predicates...