./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 66d2e51687b673901e2b8c50fb19ced215d87d97 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 01:17:00,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:17:00,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:17:00,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:17:00,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:17:00,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:17:00,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:17:00,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:17:00,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:17:00,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:17:00,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:17:00,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:17:00,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:17:00,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:17:00,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:17:00,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:17:00,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:17:00,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:17:00,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:17:00,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:17:00,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:17:00,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:17:00,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:17:00,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:17:00,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:17:00,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:17:00,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:17:00,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:17:00,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:17:00,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:17:00,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:17:00,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:17:00,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:17:00,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:17:00,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:17:00,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:17:00,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:17:00,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:17:00,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:17:00,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:17:00,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:17:00,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 01:17:00,348 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:17:00,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:17:00,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:17:00,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:17:00,351 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:17:00,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:17:00,351 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:17:00,351 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 01:17:00,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:17:00,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:17:00,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:17:00,353 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 01:17:00,353 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 01:17:00,353 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 01:17:00,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 01:17:00,354 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 01:17:00,354 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 01:17:00,354 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:17:00,354 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:17:00,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:17:00,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:17:00,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 01:17:00,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 01:17:00,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:17:00,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:17:00,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 01:17:00,356 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 01:17:00,357 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 01:17:00,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 01:17:00,357 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d2e51687b673901e2b8c50fb19ced215d87d97 [2019-11-20 01:17:00,511 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:17:00,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:17:00,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:17:00,527 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:17:00,527 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:17:00,528 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2019-11-20 01:17:00,582 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/data/50f283b99/8cbb2ac2b48645a2b704c55fc64519ce/FLAGde38bb510 [2019-11-20 01:17:01,122 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:17:01,123 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2019-11-20 01:17:01,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/data/50f283b99/8cbb2ac2b48645a2b704c55fc64519ce/FLAGde38bb510 [2019-11-20 01:17:01,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/data/50f283b99/8cbb2ac2b48645a2b704c55fc64519ce [2019-11-20 01:17:01,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:17:01,603 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 01:17:01,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:17:01,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:17:01,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:17:01,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:17:01" (1/1) ... [2019-11-20 01:17:01,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505e0221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:01, skipping insertion in model container [2019-11-20 01:17:01,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:17:01" (1/1) ... [2019-11-20 01:17:01,616 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:17:01,668 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:17:02,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:17:02,096 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:17:02,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:17:02,235 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:17:02,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:02 WrapperNode [2019-11-20 01:17:02,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:17:02,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:17:02,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:17:02,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:17:02,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:02" (1/1) ... [2019-11-20 01:17:02,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:02" (1/1) ... [2019-11-20 01:17:02,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:02" (1/1) ... [2019-11-20 01:17:02,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:02" (1/1) ... [2019-11-20 01:17:02,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:02" (1/1) ... [2019-11-20 01:17:02,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:02" (1/1) ... [2019-11-20 01:17:02,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:02" (1/1) ... [2019-11-20 01:17:02,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:17:02,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:17:02,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:17:02,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:17:02,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:17:02,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 01:17:02,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:17:02,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 01:17:02,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 01:17:02,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 01:17:02,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 01:17:02,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 01:17:02,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 01:17:02,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-20 01:17:02,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-20 01:17:02,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-20 01:17:02,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-20 01:17:02,401 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-20 01:17:02,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-20 01:17:02,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-20 01:17:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-20 01:17:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-20 01:17:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-20 01:17:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-20 01:17:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-20 01:17:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-20 01:17:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-20 01:17:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-20 01:17:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-20 01:17:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-20 01:17:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-20 01:17:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-20 01:17:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-20 01:17:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-20 01:17:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-20 01:17:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-20 01:17:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-20 01:17:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-20 01:17:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-20 01:17:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-20 01:17:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-20 01:17:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-20 01:17:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-20 01:17:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-20 01:17:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-20 01:17:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-20 01:17:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2019-11-20 01:17:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2019-11-20 01:17:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure probe2_6 [2019-11-20 01:17:02,410 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2019-11-20 01:17:02,410 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-20 01:17:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 01:17:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-20 01:17:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-20 01:17:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-20 01:17:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 01:17:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 01:17:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 01:17:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 01:17:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 01:17:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 01:17:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 01:17:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 01:17:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 01:17:02,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 01:17:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 01:17:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 01:17:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 01:17:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 01:17:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 01:17:02,413 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 01:17:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 01:17:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 01:17:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 01:17:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 01:17:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 01:17:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 01:17:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 01:17:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 01:17:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 01:17:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 01:17:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 01:17:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 01:17:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 01:17:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 01:17:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 01:17:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 01:17:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 01:17:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 01:17:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 01:17:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 01:17:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 01:17:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 01:17:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 01:17:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 01:17:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 01:17:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 01:17:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 01:17:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 01:17:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 01:17:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 01:17:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 01:17:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 01:17:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 01:17:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 01:17:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 01:17:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 01:17:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 01:17:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 01:17:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 01:17:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 01:17:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 01:17:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 01:17:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 01:17:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 01:17:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 01:17:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 01:17:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 01:17:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 01:17:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 01:17:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 01:17:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 01:17:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 01:17:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 01:17:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 01:17:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 01:17:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 01:17:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 01:17:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 01:17:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 01:17:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 01:17:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 01:17:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 01:17:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 01:17:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 01:17:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 01:17:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 01:17:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 01:17:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 01:17:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 01:17:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 01:17:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 01:17:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 01:17:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 01:17:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 01:17:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 01:17:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 01:17:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 01:17:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 01:17:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 01:17:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 01:17:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 01:17:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 01:17:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 01:17:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 01:17:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 01:17:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 01:17:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 01:17:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 01:17:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 01:17:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 01:17:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 01:17:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-20 01:17:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 01:17:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-20 01:17:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-20 01:17:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-20 01:17:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-20 01:17:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-20 01:17:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-20 01:17:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 01:17:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-20 01:17:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-20 01:17:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-20 01:17:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 01:17:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-20 01:17:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-20 01:17:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-20 01:17:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 01:17:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-20 01:17:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-20 01:17:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-20 01:17:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-20 01:17:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-20 01:17:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-20 01:17:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:17:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-20 01:17:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-20 01:17:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-20 01:17:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-20 01:17:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-20 01:17:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 01:17:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 01:17:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-20 01:17:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-20 01:17:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 01:17:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-20 01:17:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-20 01:17:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-20 01:17:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-20 01:17:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-20 01:17:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-20 01:17:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-20 01:17:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-20 01:17:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-20 01:17:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-20 01:17:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-20 01:17:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-20 01:17:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-20 01:17:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-20 01:17:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2019-11-20 01:17:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2019-11-20 01:17:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure probe2_6 [2019-11-20 01:17:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2019-11-20 01:17:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-20 01:17:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 01:17:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 01:17:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 01:17:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 01:17:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:17:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-20 01:17:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-20 01:17:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-20 01:17:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-20 01:17:02,966 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 01:17:03,357 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 01:17:03,875 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:17:03,882 INFO L285 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-20 01:17:03,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:17:03 BoogieIcfgContainer [2019-11-20 01:17:03,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:17:03,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 01:17:03,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 01:17:03,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 01:17:03,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:17:01" (1/3) ... [2019-11-20 01:17:03,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d46bfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:17:03, skipping insertion in model container [2019-11-20 01:17:03,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:17:02" (2/3) ... [2019-11-20 01:17:03,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d46bfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:17:03, skipping insertion in model container [2019-11-20 01:17:03,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:17:03" (3/3) ... [2019-11-20 01:17:03,895 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2019-11-20 01:17:03,905 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 01:17:03,914 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 83 error locations. [2019-11-20 01:17:03,924 INFO L249 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2019-11-20 01:17:03,946 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 01:17:03,946 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 01:17:03,946 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 01:17:03,946 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:17:03,946 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:17:03,947 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 01:17:03,947 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:17:03,947 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 01:17:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2019-11-20 01:17:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 01:17:03,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:17:03,982 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:17:03,982 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:17:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:17:03,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1056608978, now seen corresponding path program 1 times [2019-11-20 01:17:03,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:17:04,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [605739295] [2019-11-20 01:17:04,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:17:04,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:17:04,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:17:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:04,346 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:17:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:04,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [605739295] [2019-11-20 01:17:04,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:17:04,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 01:17:04,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250738341] [2019-11-20 01:17:04,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 01:17:04,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:17:04,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:17:04,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:17:04,459 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 5 states. [2019-11-20 01:17:04,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:17:04,540 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2019-11-20 01:17:04,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:17:04,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-20 01:17:04,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:17:04,555 INFO L225 Difference]: With dead ends: 85 [2019-11-20 01:17:04,555 INFO L226 Difference]: Without dead ends: 82 [2019-11-20 01:17:04,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:17:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-20 01:17:04,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2019-11-20 01:17:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-20 01:17:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2019-11-20 01:17:04,624 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 20 [2019-11-20 01:17:04,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:17:04,624 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2019-11-20 01:17:04,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 01:17:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2019-11-20 01:17:04,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 01:17:04,626 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:17:04,626 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:17:04,838 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:04,840 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:17:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:17:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1253122483, now seen corresponding path program 1 times [2019-11-20 01:17:04,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:17:04,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [946914187] [2019-11-20 01:17:04,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:17:05,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 01:17:05,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:17:05,267 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-11-20 01:17:05,268 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-11-20 01:17:05,269 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:05,303 INFO L567 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2019-11-20 01:17:05,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:05,307 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 01:17:05,307 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2019-11-20 01:17:05,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:05,346 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2019-11-20 01:17:05,347 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:05,349 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:05,349 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:17:05,349 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:3 [2019-11-20 01:17:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:05,358 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:17:05,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:05,445 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 4 [2019-11-20 01:17:05,445 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:05,450 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:05,450 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:17:05,450 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:12 [2019-11-20 01:17:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:05,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [946914187] [2019-11-20 01:17:05,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:17:05,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 01:17:05,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941955717] [2019-11-20 01:17:05,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 01:17:05,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:17:05,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:17:05,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:17:05,471 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2019-11-20 01:17:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:17:05,735 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2019-11-20 01:17:05,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:17:05,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-20 01:17:05,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:17:05,737 INFO L225 Difference]: With dead ends: 108 [2019-11-20 01:17:05,737 INFO L226 Difference]: Without dead ends: 105 [2019-11-20 01:17:05,738 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:17:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-20 01:17:05,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2019-11-20 01:17:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-20 01:17:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2019-11-20 01:17:05,761 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 20 [2019-11-20 01:17:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:17:05,761 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2019-11-20 01:17:05,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 01:17:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2019-11-20 01:17:05,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 01:17:05,766 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:17:05,766 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:17:05,969 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:05,970 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:17:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:17:05,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1253122482, now seen corresponding path program 1 times [2019-11-20 01:17:05,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:17:05,971 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [359962348] [2019-11-20 01:17:05,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:17:06,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 01:17:06,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:17:06,260 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:06,261 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-20 01:17:06,261 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:06,293 INFO L567 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2019-11-20 01:17:06,294 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:17:06,294 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2019-11-20 01:17:06,309 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2019-11-20 01:17:06,309 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:06,314 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:06,315 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:17:06,315 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:7 [2019-11-20 01:17:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:06,330 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:17:06,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-20 01:17:06,528 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2019-11-20 01:17:06,529 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 01:17:06,575 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:06,575 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 01:17:06,576 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:32 [2019-11-20 01:17:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:06,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [359962348] [2019-11-20 01:17:06,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:17:06,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-20 01:17:06,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520317663] [2019-11-20 01:17:06,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 01:17:06,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:17:06,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:17:06,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:17:06,677 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand 6 states. [2019-11-20 01:17:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:17:07,013 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2019-11-20 01:17:07,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:17:07,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-20 01:17:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:17:07,016 INFO L225 Difference]: With dead ends: 120 [2019-11-20 01:17:07,016 INFO L226 Difference]: Without dead ends: 119 [2019-11-20 01:17:07,016 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:17:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-11-20 01:17:07,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 104. [2019-11-20 01:17:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-20 01:17:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2019-11-20 01:17:07,033 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 20 [2019-11-20 01:17:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:17:07,034 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2019-11-20 01:17:07,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 01:17:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2019-11-20 01:17:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 01:17:07,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:17:07,036 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:17:07,239 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:07,240 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:17:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:17:07,240 INFO L82 PathProgramCache]: Analyzing trace with hash 759771907, now seen corresponding path program 1 times [2019-11-20 01:17:07,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:17:07,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [598589035] [2019-11-20 01:17:07,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:17:07,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:17:07,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:17:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:07,462 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:17:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:07,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [598589035] [2019-11-20 01:17:07,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:17:07,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 01:17:07,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393215760] [2019-11-20 01:17:07,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 01:17:07,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:17:07,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:17:07,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:17:07,499 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 5 states. [2019-11-20 01:17:07,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:17:07,533 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2019-11-20 01:17:07,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:17:07,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-20 01:17:07,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:17:07,536 INFO L225 Difference]: With dead ends: 103 [2019-11-20 01:17:07,536 INFO L226 Difference]: Without dead ends: 103 [2019-11-20 01:17:07,537 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:17:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-20 01:17:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2019-11-20 01:17:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-20 01:17:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2019-11-20 01:17:07,547 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 22 [2019-11-20 01:17:07,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:17:07,547 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2019-11-20 01:17:07,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 01:17:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2019-11-20 01:17:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 01:17:07,548 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:17:07,548 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:17:07,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:07,759 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:17:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:17:07,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1659853236, now seen corresponding path program 1 times [2019-11-20 01:17:07,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:17:07,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1242834943] [2019-11-20 01:17:07,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:17:07,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:17:07,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:17:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:08,010 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:17:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:08,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1242834943] [2019-11-20 01:17:08,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:17:08,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-20 01:17:08,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81646430] [2019-11-20 01:17:08,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 01:17:08,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:17:08,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 01:17:08,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 01:17:08,109 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand 10 states. [2019-11-20 01:17:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:17:08,182 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2019-11-20 01:17:08,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 01:17:08,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-11-20 01:17:08,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:17:08,184 INFO L225 Difference]: With dead ends: 121 [2019-11-20 01:17:08,185 INFO L226 Difference]: Without dead ends: 113 [2019-11-20 01:17:08,185 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-20 01:17:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-11-20 01:17:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2019-11-20 01:17:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-20 01:17:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2019-11-20 01:17:08,195 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 22 [2019-11-20 01:17:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:17:08,195 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2019-11-20 01:17:08,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 01:17:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2019-11-20 01:17:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 01:17:08,196 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:17:08,196 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:17:08,398 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:08,399 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:17:08,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:17:08,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2078092995, now seen corresponding path program 1 times [2019-11-20 01:17:08,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:17:08,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [140289770] [2019-11-20 01:17:08,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:17:08,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 01:17:08,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:17:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:08,699 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:17:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:08,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [140289770] [2019-11-20 01:17:08,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:17:08,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2019-11-20 01:17:08,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524510296] [2019-11-20 01:17:08,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 01:17:08,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:17:08,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 01:17:08,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 01:17:08,770 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 9 states. [2019-11-20 01:17:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:17:08,939 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2019-11-20 01:17:08,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:17:08,939 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2019-11-20 01:17:08,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:17:08,940 INFO L225 Difference]: With dead ends: 106 [2019-11-20 01:17:08,940 INFO L226 Difference]: Without dead ends: 106 [2019-11-20 01:17:08,941 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 01:17:08,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-20 01:17:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2019-11-20 01:17:08,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-20 01:17:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2019-11-20 01:17:08,949 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 23 [2019-11-20 01:17:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:17:08,950 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2019-11-20 01:17:08,950 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 01:17:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2019-11-20 01:17:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 01:17:08,951 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:17:08,951 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:17:09,153 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:09,154 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:17:09,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:17:09,154 INFO L82 PathProgramCache]: Analyzing trace with hash -3626235, now seen corresponding path program 1 times [2019-11-20 01:17:09,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:17:09,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1993340896] [2019-11-20 01:17:09,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:17:09,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:17:09,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:17:09,364 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 01:17:09,365 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:09,367 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:09,367 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:17:09,368 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 01:17:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:09,416 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:17:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:09,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1993340896] [2019-11-20 01:17:09,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:17:09,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2019-11-20 01:17:09,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849827531] [2019-11-20 01:17:09,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 01:17:09,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:17:09,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:17:09,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:17:09,477 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand 6 states. [2019-11-20 01:17:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:17:09,767 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2019-11-20 01:17:09,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:17:09,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-20 01:17:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:17:09,769 INFO L225 Difference]: With dead ends: 109 [2019-11-20 01:17:09,769 INFO L226 Difference]: Without dead ends: 109 [2019-11-20 01:17:09,770 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:17:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-20 01:17:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2019-11-20 01:17:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-20 01:17:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2019-11-20 01:17:09,777 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 24 [2019-11-20 01:17:09,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:17:09,778 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2019-11-20 01:17:09,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 01:17:09,778 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2019-11-20 01:17:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 01:17:09,779 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:17:09,779 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:17:09,982 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:09,983 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:17:09,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:17:09,983 INFO L82 PathProgramCache]: Analyzing trace with hash -509184860, now seen corresponding path program 1 times [2019-11-20 01:17:09,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:17:09,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1096431941] [2019-11-20 01:17:09,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:17:10,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:17:10,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:17:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:10,194 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:17:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:10,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096431941] [2019-11-20 01:17:10,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:17:10,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-20 01:17:10,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547425051] [2019-11-20 01:17:10,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 01:17:10,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:17:10,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:17:10,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:17:10,222 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand 6 states. [2019-11-20 01:17:10,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:17:10,286 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2019-11-20 01:17:10,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:17:10,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-20 01:17:10,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:17:10,289 INFO L225 Difference]: With dead ends: 101 [2019-11-20 01:17:10,289 INFO L226 Difference]: Without dead ends: 100 [2019-11-20 01:17:10,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:17:10,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-20 01:17:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2019-11-20 01:17:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-20 01:17:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2019-11-20 01:17:10,303 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 24 [2019-11-20 01:17:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:17:10,303 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2019-11-20 01:17:10,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 01:17:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2019-11-20 01:17:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 01:17:10,307 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:17:10,307 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:17:10,510 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:10,510 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:17:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:17:10,511 INFO L82 PathProgramCache]: Analyzing trace with hash 561600154, now seen corresponding path program 1 times [2019-11-20 01:17:10,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:17:10,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1580085815] [2019-11-20 01:17:10,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:17:10,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 01:17:10,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:17:10,763 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-11-20 01:17:10,764 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-11-20 01:17:10,764 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:10,784 INFO L567 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2019-11-20 01:17:10,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:10,786 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 01:17:10,786 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2019-11-20 01:17:10,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:10,886 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:10,886 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-11-20 01:17:10,887 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:10,909 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-20 01:17:10,910 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 01:17:10,910 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2019-11-20 01:17:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:11,095 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:17:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:11,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1580085815] [2019-11-20 01:17:11,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:17:11,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2019-11-20 01:17:11,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455545296] [2019-11-20 01:17:11,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 01:17:11,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:17:11,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 01:17:11,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-11-20 01:17:11,459 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 14 states. [2019-11-20 01:17:12,085 WARN L191 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-11-20 01:17:12,645 WARN L191 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-11-20 01:17:13,051 WARN L191 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-11-20 01:17:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:17:19,676 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2019-11-20 01:17:19,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 01:17:19,676 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2019-11-20 01:17:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:17:19,677 INFO L225 Difference]: With dead ends: 103 [2019-11-20 01:17:19,677 INFO L226 Difference]: Without dead ends: 103 [2019-11-20 01:17:19,678 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2019-11-20 01:17:19,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-20 01:17:19,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2019-11-20 01:17:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-20 01:17:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2019-11-20 01:17:19,682 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 28 [2019-11-20 01:17:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:17:19,683 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2019-11-20 01:17:19,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 01:17:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2019-11-20 01:17:19,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 01:17:19,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:17:19,684 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:17:19,889 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:19,889 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:17:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:17:19,890 INFO L82 PathProgramCache]: Analyzing trace with hash 561600155, now seen corresponding path program 1 times [2019-11-20 01:17:19,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:17:19,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [976556906] [2019-11-20 01:17:19,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:17:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:17:20,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-20 01:17:20,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:17:20,177 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-11-20 01:17:20,178 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-11-20 01:17:20,178 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:20,215 INFO L567 ElimStorePlain]: treesize reduction 10, result has 77.8 percent of original size [2019-11-20 01:17:20,231 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:20,232 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-20 01:17:20,232 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:20,272 INFO L567 ElimStorePlain]: treesize reduction 10, result has 80.0 percent of original size [2019-11-20 01:17:20,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:20,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:20,274 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 01:17:20,274 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:40 [2019-11-20 01:17:20,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:20,275 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:20,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:20,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:20,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:20,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:20,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:20,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:20,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:20,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:20,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:20,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:20,501 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2019-11-20 01:17:22,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:22,688 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:22,689 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 50 [2019-11-20 01:17:22,690 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:22,713 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:22,714 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2019-11-20 01:17:22,714 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:22,724 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 01:17:22,725 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2019-11-20 01:17:22,725 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:22,785 INFO L567 ElimStorePlain]: treesize reduction 27, result has 41.3 percent of original size [2019-11-20 01:17:22,790 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-20 01:17:22,790 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 01:17:22,804 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:17:22,804 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:17:22,804 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:97, output treesize:11 [2019-11-20 01:17:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:22,941 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:17:23,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:25,188 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:25,189 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:25,189 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:25,190 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:25,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:25,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:25,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:17:27,775 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2019-11-20 01:17:27,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:17:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:17:32,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [976556906] [2019-11-20 01:17:32,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:17:32,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2019-11-20 01:17:32,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98917785] [2019-11-20 01:17:32,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 01:17:32,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:17:32,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 01:17:32,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=167, Unknown=4, NotChecked=0, Total=210 [2019-11-20 01:17:32,403 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 15 states. [2019-11-20 01:17:42,952 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-11-20 01:17:45,780 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2019-11-20 01:18:11,721 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-20 01:18:32,200 WARN L191 SmtUtils]: Spent 9.85 s on a formula simplification that was a NOOP. DAG size: 49 [2019-11-20 01:19:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:21,265 INFO L93 Difference]: Finished difference Result 110 states and 111 transitions. [2019-11-20 01:19:21,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 01:19:21,267 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2019-11-20 01:19:21,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:21,268 INFO L225 Difference]: With dead ends: 110 [2019-11-20 01:19:21,268 INFO L226 Difference]: Without dead ends: 110 [2019-11-20 01:19:21,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=167, Invalid=530, Unknown=5, NotChecked=0, Total=702 [2019-11-20 01:19:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-20 01:19:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 96. [2019-11-20 01:19:21,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-20 01:19:21,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2019-11-20 01:19:21,274 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 28 [2019-11-20 01:19:21,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:21,275 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2019-11-20 01:19:21,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 01:19:21,275 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2019-11-20 01:19:21,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 01:19:21,276 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:21,277 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:19:21,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:19:21,480 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE, disconnect_6Err1REQUIRES_VIOLATION, disconnect_6Err0REQUIRES_VIOLATION, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr1REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE, probe2_6Err1REQUIRES_VIOLATION, probe2_6Err0REQUIRES_VIOLATION]=== [2019-11-20 01:19:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:21,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2026302042, now seen corresponding path program 1 times [2019-11-20 01:19:21,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:19:21,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [914690796] [2019-11-20 01:19:21,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f698caf-fce8-45f7-8ab1-0f5a4b8b7692/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:19:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:21,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 01:19:21,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:19:21,760 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-11-20 01:19:21,760 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-11-20 01:19:21,761 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:19:21,803 INFO L567 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2019-11-20 01:19:21,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:19:21,804 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 01:19:21,804 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2019-11-20 01:19:21,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:19:21,828 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2019-11-20 01:19:21,829 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:19:21,831 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:19:21,831 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:19:21,831 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:3 [2019-11-20 01:19:21,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:19:21,899 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2019-11-20 01:19:21,899 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:19:21,911 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:19:21,914 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 12 treesize of output 9 [2019-11-20 01:19:21,914 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 01:19:21,923 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:19:21,923 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-11-20 01:19:21,923 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:16 [2019-11-20 01:19:24,016 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:19:24,017 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2019-11-20 01:19:24,017 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:19:24,043 INFO L567 ElimStorePlain]: treesize reduction 18, result has 45.5 percent of original size [2019-11-20 01:19:24,043 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 01:19:24,044 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2019-11-20 01:19:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:24,080 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:19:34,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 01:19:34,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:19:34,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 01:19:34,436 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-11-20 01:19:34,658 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:19:34,658 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 01:19:34,663 INFO L168 Benchmark]: Toolchain (without parser) took 153059.96 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 238.0 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -63.9 MB). Peak memory consumption was 174.2 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:34,663 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:19:34,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:34,664 INFO L168 Benchmark]: Boogie Preprocessor took 97.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:34,665 INFO L168 Benchmark]: RCFGBuilder took 1549.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 114.7 MB). Peak memory consumption was 114.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:34,665 INFO L168 Benchmark]: TraceAbstraction took 150772.31 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.6 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 70.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:34,671 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 632.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 97.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1549.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 114.7 MB). Peak memory consumption was 114.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 150772.31 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.6 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 70.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...