./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.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_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 8e9fad8e4cf3911fa9881577a543d060495d5513 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-19 22:38:42,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:38:42,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:38:42,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:38:42,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:38:42,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:38:42,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:38:42,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:38:42,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:38:42,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:38:42,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:38:42,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:38:42,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:38:42,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:38:42,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:38:42,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:38:42,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:38:42,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:38:42,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:38:42,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:38:42,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:38:42,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:38:42,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:38:42,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:38:42,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:38:42,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:38:42,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:38:42,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:38:42,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:38:42,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:38:42,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:38:42,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:38:42,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:38:42,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:38:42,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:38:42,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:38:42,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:38:42,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:38:42,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:38:42,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:38:42,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:38:42,373 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 22:38:42,388 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:38:42,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:38:42,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:38:42,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:38:42,390 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:38:42,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:38:42,390 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:38:42,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:38:42,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:38:42,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:38:42,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:38:42,391 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 22:38:42,392 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 22:38:42,392 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 22:38:42,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:38:42,392 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 22:38:42,392 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 22:38:42,393 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:38:42,393 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:38:42,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:38:42,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:38:42,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:38:42,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:38:42,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:38:42,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:38:42,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:38:42,395 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 22:38:42,395 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 22:38:42,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 22:38:42,395 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_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 -> 8e9fad8e4cf3911fa9881577a543d060495d5513 [2019-11-19 22:38:42,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:38:42,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:38:42,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:38:42,589 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:38:42,589 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:38:42,590 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i [2019-11-19 22:38:42,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/data/5e187a658/f47d8c6e267f46159e12a9b455ff8bbc/FLAG50a966ace [2019-11-19 22:38:43,228 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:38:43,229 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i [2019-11-19 22:38:43,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/data/5e187a658/f47d8c6e267f46159e12a9b455ff8bbc/FLAG50a966ace [2019-11-19 22:38:43,538 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/data/5e187a658/f47d8c6e267f46159e12a9b455ff8bbc [2019-11-19 22:38:43,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:38:43,549 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 22:38:43,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:38:43,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:38:43,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:38:43,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:38:43" (1/1) ... [2019-11-19 22:38:43,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c4e7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:43, skipping insertion in model container [2019-11-19 22:38:43,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:38:43" (1/1) ... [2019-11-19 22:38:43,574 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:38:43,637 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:38:44,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:38:44,287 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:38:44,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:38:44,510 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:38:44,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:44 WrapperNode [2019-11-19 22:38:44,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:38:44,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:38:44,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:38:44,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:38:44,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:44" (1/1) ... [2019-11-19 22:38:44,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:44" (1/1) ... [2019-11-19 22:38:44,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:44" (1/1) ... [2019-11-19 22:38:44,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:44" (1/1) ... [2019-11-19 22:38:44,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:44" (1/1) ... [2019-11-19 22:38:44,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:44" (1/1) ... [2019-11-19 22:38:44,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:44" (1/1) ... [2019-11-19 22:38:44,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:38:44,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:38:44,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:38:44,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:38:44,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 22:38:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:38:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-19 22:38:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-19 22:38:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-19 22:38:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-19 22:38:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-19 22:38:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-19 22:38:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-19 22:38:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-19 22:38:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-19 22:38:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-19 22:38:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-19 22:38:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-19 22:38:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-19 22:38:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-19 22:38:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-19 22:38:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-19 22:38:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-19 22:38:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-19 22:38:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-19 22:38:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-19 22:38:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-19 22:38:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-19 22:38:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-19 22:38:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-19 22:38:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-19 22:38:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-19 22:38:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-19 22:38:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-19 22:38:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-19 22:38:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-19 22:38:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-19 22:38:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-19 22:38:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-19 22:38:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-19 22:38:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-19 22:38:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-19 22:38:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-19 22:38:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-19 22:38:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-19 22:38:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure f_22_get [2019-11-19 22:38:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure f_22_put [2019-11-19 22:38:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-19 22:38:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 22:38:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-19 22:38:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-19 22:38:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-19 22:38:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-19 22:38:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-19 22:38:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-19 22:38:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-19 22:38:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-19 22:38:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-19 22:38:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-19 22:38:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-19 22:38:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-19 22:38:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-19 22:38:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-19 22:38:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-19 22:38:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-19 22:38:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-19 22:38:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-19 22:38:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-19 22:38:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-19 22:38:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-19 22:38:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-19 22:38:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-19 22:38:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-19 22:38:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-19 22:38:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-19 22:38:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-19 22:38:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-19 22:38:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-19 22:38:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-19 22:38:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-19 22:38:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-19 22:38:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-19 22:38:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-19 22:38:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-19 22:38:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-19 22:38:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-19 22:38:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-19 22:38:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-19 22:38:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-19 22:38:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-19 22:38:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-19 22:38:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-19 22:38:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-19 22:38:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-19 22:38:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-19 22:38:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-19 22:38:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-19 22:38:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-19 22:38:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-19 22:38:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-19 22:38:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-19 22:38:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-19 22:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-19 22:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-19 22:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-19 22:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-19 22:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-19 22:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-19 22:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-19 22:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-19 22:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-19 22:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-19 22:38:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-19 22:38:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-19 22:38:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-19 22:38:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-19 22:38:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-19 22:38:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-19 22:38:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-19 22:38:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-19 22:38:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-19 22:38:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-19 22:38:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-19 22:38:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-19 22:38:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-19 22:38:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-19 22:38:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-19 22:38:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-19 22:38:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-19 22:38:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-19 22:38:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-19 22:38:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-19 22:38:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-19 22:38:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-19 22:38:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-19 22:38:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-19 22:38:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-19 22:38:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-19 22:38:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-19 22:38:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-19 22:38:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-19 22:38:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-19 22:38:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-19 22:38:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-19 22:38:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-19 22:38:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-19 22:38:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-19 22:38:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-19 22:38:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-19 22:38:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-19 22:38:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-19 22:38:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-19 22:38:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-19 22:38:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-19 22:38:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-19 22:38:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-19 22:38:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-19 22:38:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-19 22:38:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-19 22:38:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-19 22:38:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-19 22:38:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-19 22:38:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-19 22:38:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-19 22:38:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-19 22:38:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-19 22:38:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-19 22:38:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 22:38:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-19 22:38:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-19 22:38:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-19 22:38:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 22:38:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-19 22:38:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-19 22:38:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-19 22:38:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 22:38:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-19 22:38:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-19 22:38:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-19 22:38:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-19 22:38:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-19 22:38:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-19 22:38:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 22:38:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-19 22:38:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-19 22:38:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-19 22:38:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-19 22:38:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-19 22:38:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 22:38:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 22:38:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-19 22:38:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-19 22:38:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-19 22:38:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-19 22:38:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-19 22:38:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-19 22:38:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-19 22:38:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-19 22:38:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-19 22:38:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-19 22:38:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-19 22:38:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-19 22:38:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-19 22:38:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-19 22:38:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-19 22:38:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-19 22:38:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-19 22:38:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure f_22_get [2019-11-19 22:38:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure f_22_put [2019-11-19 22:38:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-19 22:38:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 22:38:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 22:38:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 22:38:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-19 22:38:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:38:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-19 22:38:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-19 22:38:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-19 22:38:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-19 22:38:45,417 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-19 22:38:45,955 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-19 22:38:46,415 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:38:46,415 INFO L285 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-19 22:38:46,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:38:46 BoogieIcfgContainer [2019-11-19 22:38:46,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:38:46,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:38:46,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:38:46,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:38:46,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:38:43" (1/3) ... [2019-11-19 22:38:46,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c112f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:38:46, skipping insertion in model container [2019-11-19 22:38:46,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:38:44" (2/3) ... [2019-11-19 22:38:46,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c112f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:38:46, skipping insertion in model container [2019-11-19 22:38:46,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:38:46" (3/3) ... [2019-11-19 22:38:46,428 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test22_4.i [2019-11-19 22:38:46,438 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:38:46,448 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2019-11-19 22:38:46,460 INFO L249 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2019-11-19 22:38:46,485 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:38:46,486 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 22:38:46,486 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:38:46,486 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:38:46,486 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:38:46,486 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:38:46,486 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:38:46,487 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:38:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2019-11-19 22:38:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 22:38:46,527 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:46,528 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:38:46,529 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:46,536 INFO L82 PathProgramCache]: Analyzing trace with hash 413310698, now seen corresponding path program 1 times [2019-11-19 22:38:46,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:46,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1501126655] [2019-11-19 22:38:46,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:38:46,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:38:46,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:47,029 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 [2019-11-19 22:38:47,029 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:38:47,037 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:38:47,038 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:38:47,038 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:38:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:47,075 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:47,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1501126655] [2019-11-19 22:38:47,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:38:47,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-19 22:38:47,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868838598] [2019-11-19 22:38:47,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:38:47,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:47,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:38:47,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:38:47,173 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 5 states. [2019-11-19 22:38:47,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:47,551 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2019-11-19 22:38:47,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:38:47,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-19 22:38:47,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:47,572 INFO L225 Difference]: With dead ends: 160 [2019-11-19 22:38:47,572 INFO L226 Difference]: Without dead ends: 157 [2019-11-19 22:38:47,575 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:38:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-19 22:38:47,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2019-11-19 22:38:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-19 22:38:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2019-11-19 22:38:47,666 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 17 [2019-11-19 22:38:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:47,666 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2019-11-19 22:38:47,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:38:47,667 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2019-11-19 22:38:47,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 22:38:47,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:47,668 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:38:47,879 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:47,880 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:47,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:47,880 INFO L82 PathProgramCache]: Analyzing trace with hash 413310699, now seen corresponding path program 1 times [2019-11-19 22:38:47,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:47,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1298979853] [2019-11-19 22:38:47,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:38:48,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 22:38:48,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:48,250 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 [2019-11-19 22:38:48,250 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:38:48,258 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:38:48,258 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:38:48,259 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:38:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:48,309 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:48,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1298979853] [2019-11-19 22:38:48,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:38:48,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-19 22:38:48,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626049347] [2019-11-19 22:38:48,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:38:48,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:48,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:38:48,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:38:48,714 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 10 states. [2019-11-19 22:38:49,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:49,420 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2019-11-19 22:38:49,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:38:49,423 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-19 22:38:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:49,425 INFO L225 Difference]: With dead ends: 156 [2019-11-19 22:38:49,425 INFO L226 Difference]: Without dead ends: 156 [2019-11-19 22:38:49,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:38:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-19 22:38:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2019-11-19 22:38:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-19 22:38:49,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 161 transitions. [2019-11-19 22:38:49,436 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 161 transitions. Word has length 17 [2019-11-19 22:38:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:49,437 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 161 transitions. [2019-11-19 22:38:49,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:38:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 161 transitions. [2019-11-19 22:38:49,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 22:38:49,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:49,438 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:38:49,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:49,650 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:49,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:49,650 INFO L82 PathProgramCache]: Analyzing trace with hash 441939849, now seen corresponding path program 1 times [2019-11-19 22:38:49,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:49,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [65613832] [2019-11-19 22:38:49,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:38:49,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:38:49,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:49,968 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:50,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [65613832] [2019-11-19 22:38:50,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:38:50,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-19 22:38:50,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194730432] [2019-11-19 22:38:50,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:38:50,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:50,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:38:50,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:38:50,011 INFO L87 Difference]: Start difference. First operand 151 states and 161 transitions. Second operand 5 states. [2019-11-19 22:38:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:50,038 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2019-11-19 22:38:50,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:38:50,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-19 22:38:50,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:50,041 INFO L225 Difference]: With dead ends: 150 [2019-11-19 22:38:50,041 INFO L226 Difference]: Without dead ends: 150 [2019-11-19 22:38:50,041 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:38:50,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-19 22:38:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2019-11-19 22:38:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-19 22:38:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 156 transitions. [2019-11-19 22:38:50,061 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 156 transitions. Word has length 17 [2019-11-19 22:38:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:50,062 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 156 transitions. [2019-11-19 22:38:50,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:38:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 156 transitions. [2019-11-19 22:38:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 22:38:50,068 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:50,068 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] [2019-11-19 22:38:50,270 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:50,271 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:50,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2010599754, now seen corresponding path program 1 times [2019-11-19 22:38:50,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:50,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1418064101] [2019-11-19 22:38:50,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:38:50,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:38:50,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:50,541 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:50,649 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1418064101] [2019-11-19 22:38:50,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:38:50,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-19 22:38:50,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583567380] [2019-11-19 22:38:50,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:38:50,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:50,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:38:50,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:38:50,651 INFO L87 Difference]: Start difference. First operand 148 states and 156 transitions. Second operand 5 states. [2019-11-19 22:38:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:50,687 INFO L93 Difference]: Finished difference Result 150 states and 157 transitions. [2019-11-19 22:38:50,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:38:50,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-11-19 22:38:50,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:50,691 INFO L225 Difference]: With dead ends: 150 [2019-11-19 22:38:50,694 INFO L226 Difference]: Without dead ends: 150 [2019-11-19 22:38:50,694 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:38:50,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-19 22:38:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2019-11-19 22:38:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-19 22:38:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 155 transitions. [2019-11-19 22:38:50,710 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 155 transitions. Word has length 29 [2019-11-19 22:38:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:50,710 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 155 transitions. [2019-11-19 22:38:50,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:38:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 155 transitions. [2019-11-19 22:38:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 22:38:50,713 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:50,713 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] [2019-11-19 22:38:50,916 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:50,916 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:50,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1013527401, now seen corresponding path program 1 times [2019-11-19 22:38:50,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:50,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1714058382] [2019-11-19 22:38:50,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:38:51,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-19 22:38:51,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:51,377 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:51,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1714058382] [2019-11-19 22:38:51,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:38:51,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-11-19 22:38:51,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203226505] [2019-11-19 22:38:51,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 22:38:51,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:51,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 22:38:51,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-19 22:38:51,446 INFO L87 Difference]: Start difference. First operand 148 states and 155 transitions. Second operand 9 states. [2019-11-19 22:38:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:51,594 INFO L93 Difference]: Finished difference Result 168 states and 176 transitions. [2019-11-19 22:38:51,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 22:38:51,595 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2019-11-19 22:38:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:51,597 INFO L225 Difference]: With dead ends: 168 [2019-11-19 22:38:51,597 INFO L226 Difference]: Without dead ends: 168 [2019-11-19 22:38:51,598 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:38:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-11-19 22:38:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2019-11-19 22:38:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-11-19 22:38:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 169 transitions. [2019-11-19 22:38:51,620 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 169 transitions. Word has length 29 [2019-11-19 22:38:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:51,620 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 169 transitions. [2019-11-19 22:38:51,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 22:38:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 169 transitions. [2019-11-19 22:38:51,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-19 22:38:51,629 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:51,629 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, 1, 1, 1] [2019-11-19 22:38:51,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:51,830 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:51,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:51,830 INFO L82 PathProgramCache]: Analyzing trace with hash -153172997, now seen corresponding path program 1 times [2019-11-19 22:38:51,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:51,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [433210558] [2019-11-19 22:38:51,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:38:52,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:38:52,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:52,110 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:52,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [433210558] [2019-11-19 22:38:52,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:38:52,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-19 22:38:52,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766377633] [2019-11-19 22:38:52,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 22:38:52,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:52,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 22:38:52,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:38:52,171 INFO L87 Difference]: Start difference. First operand 162 states and 169 transitions. Second operand 6 states. [2019-11-19 22:38:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:52,242 INFO L93 Difference]: Finished difference Result 168 states and 175 transitions. [2019-11-19 22:38:52,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:38:52,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-19 22:38:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:52,245 INFO L225 Difference]: With dead ends: 168 [2019-11-19 22:38:52,245 INFO L226 Difference]: Without dead ends: 164 [2019-11-19 22:38:52,245 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:38:52,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-19 22:38:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2019-11-19 22:38:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2019-11-19 22:38:52,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 171 transitions. [2019-11-19 22:38:52,256 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 171 transitions. Word has length 32 [2019-11-19 22:38:52,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:52,257 INFO L462 AbstractCegarLoop]: Abstraction has 164 states and 171 transitions. [2019-11-19 22:38:52,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 22:38:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 171 transitions. [2019-11-19 22:38:52,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-19 22:38:52,258 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:52,259 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:38:52,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:52,468 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:52,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash -288526373, now seen corresponding path program 1 times [2019-11-19 22:38:52,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:52,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1948903348] [2019-11-19 22:38:52,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:38:52,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:38:52,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:52,787 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:52,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:52,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1948903348] [2019-11-19 22:38:52,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:38:52,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-19 22:38:52,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359960179] [2019-11-19 22:38:52,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:38:52,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:52,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:38:52,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:38:52,937 INFO L87 Difference]: Start difference. First operand 164 states and 171 transitions. Second operand 10 states. [2019-11-19 22:38:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:53,159 INFO L93 Difference]: Finished difference Result 172 states and 181 transitions. [2019-11-19 22:38:53,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 22:38:53,162 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2019-11-19 22:38:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:53,163 INFO L225 Difference]: With dead ends: 172 [2019-11-19 22:38:53,163 INFO L226 Difference]: Without dead ends: 168 [2019-11-19 22:38:53,164 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:38:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-11-19 22:38:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2019-11-19 22:38:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2019-11-19 22:38:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 175 transitions. [2019-11-19 22:38:53,174 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 175 transitions. Word has length 34 [2019-11-19 22:38:53,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:53,174 INFO L462 AbstractCegarLoop]: Abstraction has 168 states and 175 transitions. [2019-11-19 22:38:53,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:38:53,174 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 175 transitions. [2019-11-19 22:38:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-19 22:38:53,176 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:53,176 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:38:53,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:53,379 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:53,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1823891355, now seen corresponding path program 2 times [2019-11-19 22:38:53,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:53,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1899466592] [2019-11-19 22:38:53,380 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:53,617 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-19 22:38:53,617 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:38:53,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-19 22:38:53,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:53,629 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 [2019-11-19 22:38:53,630 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:38:53,632 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:38:53,633 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:38:53,633 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:38:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-19 22:38:53,804 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-19 22:38:53,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1899466592] [2019-11-19 22:38:53,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:38:53,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-19 22:38:53,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644645285] [2019-11-19 22:38:53,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 22:38:53,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:53,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 22:38:53,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:38:53,897 INFO L87 Difference]: Start difference. First operand 168 states and 175 transitions. Second operand 13 states. [2019-11-19 22:38:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:55,254 INFO L93 Difference]: Finished difference Result 179 states and 185 transitions. [2019-11-19 22:38:55,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-19 22:38:55,255 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2019-11-19 22:38:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:55,256 INFO L225 Difference]: With dead ends: 179 [2019-11-19 22:38:55,257 INFO L226 Difference]: Without dead ends: 179 [2019-11-19 22:38:55,257 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-19 22:38:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2019-11-19 22:38:55,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 167. [2019-11-19 22:38:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-19 22:38:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 174 transitions. [2019-11-19 22:38:55,267 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 174 transitions. Word has length 38 [2019-11-19 22:38:55,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:55,267 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 174 transitions. [2019-11-19 22:38:55,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 22:38:55,268 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 174 transitions. [2019-11-19 22:38:55,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-19 22:38:55,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:55,270 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:38:55,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:55,474 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:55,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1823891356, now seen corresponding path program 1 times [2019-11-19 22:38:55,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:55,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1334162861] [2019-11-19 22:38:55,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:38:55,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 22:38:55,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:55,936 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:56,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1334162861] [2019-11-19 22:38:56,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:38:56,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-19 22:38:56,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539052223] [2019-11-19 22:38:56,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-19 22:38:56,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:56,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-19 22:38:56,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2019-11-19 22:38:56,339 INFO L87 Difference]: Start difference. First operand 167 states and 174 transitions. Second operand 18 states. [2019-11-19 22:38:56,974 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 14 [2019-11-19 22:38:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:57,462 INFO L93 Difference]: Finished difference Result 179 states and 192 transitions. [2019-11-19 22:38:57,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-19 22:38:57,462 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2019-11-19 22:38:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:57,464 INFO L225 Difference]: With dead ends: 179 [2019-11-19 22:38:57,465 INFO L226 Difference]: Without dead ends: 175 [2019-11-19 22:38:57,465 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2019-11-19 22:38:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-11-19 22:38:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-11-19 22:38:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-11-19 22:38:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2019-11-19 22:38:57,474 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 38 [2019-11-19 22:38:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:57,474 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 182 transitions. [2019-11-19 22:38:57,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-19 22:38:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 182 transitions. [2019-11-19 22:38:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-19 22:38:57,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:57,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:38:57,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:57,681 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:57,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1907875813, now seen corresponding path program 1 times [2019-11-19 22:38:57,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:57,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [693058261] [2019-11-19 22:38:57,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:38:57,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 22:38:57,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:58,017 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:58,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [693058261] [2019-11-19 22:38:58,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:38:58,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-19 22:38:58,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346983490] [2019-11-19 22:38:58,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 22:38:58,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:58,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 22:38:58,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:38:58,076 INFO L87 Difference]: Start difference. First operand 175 states and 182 transitions. Second operand 7 states. [2019-11-19 22:38:58,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:58,128 INFO L93 Difference]: Finished difference Result 184 states and 191 transitions. [2019-11-19 22:38:58,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 22:38:58,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-19 22:38:58,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:58,131 INFO L225 Difference]: With dead ends: 184 [2019-11-19 22:38:58,131 INFO L226 Difference]: Without dead ends: 184 [2019-11-19 22:38:58,131 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:38:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-11-19 22:38:58,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2019-11-19 22:38:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2019-11-19 22:38:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 187 transitions. [2019-11-19 22:38:58,144 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 187 transitions. Word has length 40 [2019-11-19 22:38:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:58,144 INFO L462 AbstractCegarLoop]: Abstraction has 180 states and 187 transitions. [2019-11-19 22:38:58,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 22:38:58,145 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 187 transitions. [2019-11-19 22:38:58,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-19 22:38:58,149 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:58,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:38:58,354 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:58,354 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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:58,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:58,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1624891422, now seen corresponding path program 1 times [2019-11-19 22:38:58,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:58,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1780023988] [2019-11-19 22:38:58,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/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 [2019-11-19 22:38:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:38:58,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 22:38:58,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:58,612 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:38:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:38:58,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1780023988] [2019-11-19 22:38:58,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:38:58,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 22:38:58,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730334598] [2019-11-19 22:38:58,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:38:58,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:38:58,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:38:58,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:38:58,796 INFO L87 Difference]: Start difference. First operand 180 states and 187 transitions. Second operand 3 states. [2019-11-19 22:38:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:38:59,001 INFO L93 Difference]: Finished difference Result 191 states and 197 transitions. [2019-11-19 22:38:59,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:38:59,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-11-19 22:38:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:38:59,004 INFO L225 Difference]: With dead ends: 191 [2019-11-19 22:38:59,004 INFO L226 Difference]: Without dead ends: 165 [2019-11-19 22:38:59,005 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:38:59,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-11-19 22:38:59,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2019-11-19 22:38:59,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-11-19 22:38:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 163 transitions. [2019-11-19 22:38:59,011 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 163 transitions. Word has length 38 [2019-11-19 22:38:59,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:38:59,012 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 163 transitions. [2019-11-19 22:38:59,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:38:59,012 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 163 transitions. [2019-11-19 22:38:59,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-19 22:38:59,013 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:38:59,013 INFO L410 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:38:59,217 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:59,217 INFO L410 AbstractCegarLoop]: === Iteration 12 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:38:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:38:59,218 INFO L82 PathProgramCache]: Analyzing trace with hash 369008412, now seen corresponding path program 2 times [2019-11-19 22:38:59,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:38:59,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [902066918] [2019-11-19 22:38:59,219 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:38:59,544 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-19 22:38:59,544 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:38:59,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-19 22:38:59,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:38:59,558 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 [2019-11-19 22:38:59,558 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:38:59,564 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:38:59,564 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:38:59,564 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:38:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-19 22:38:59,836 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-19 22:39:00,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [902066918] [2019-11-19 22:39:00,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:00,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-19 22:39:00,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043435521] [2019-11-19 22:39:00,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-19 22:39:00,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:00,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-19 22:39:00,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-19 22:39:00,845 INFO L87 Difference]: Start difference. First operand 157 states and 163 transitions. Second operand 23 states. [2019-11-19 22:39:03,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:03,839 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2019-11-19 22:39:03,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-19 22:39:03,840 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2019-11-19 22:39:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:03,842 INFO L225 Difference]: With dead ends: 156 [2019-11-19 22:39:03,842 INFO L226 Difference]: Without dead ends: 156 [2019-11-19 22:39:03,843 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-19 22:39:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-19 22:39:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2019-11-19 22:39:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-19 22:39:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 162 transitions. [2019-11-19 22:39:03,857 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 162 transitions. Word has length 46 [2019-11-19 22:39:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:03,859 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 162 transitions. [2019-11-19 22:39:03,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-19 22:39:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 162 transitions. [2019-11-19 22:39:03,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-19 22:39:03,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:03,861 INFO L410 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:04,064 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:04,065 INFO L410 AbstractCegarLoop]: === Iteration 13 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:04,065 INFO L82 PathProgramCache]: Analyzing trace with hash 2053907374, now seen corresponding path program 1 times [2019-11-19 22:39:04,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:04,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [336564525] [2019-11-19 22:39:04,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:04,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-19 22:39:04,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:39:04,683 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:04,816 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-11-19 22:39:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:39:05,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [336564525] [2019-11-19 22:39:05,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:39:05,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2019-11-19 22:39:05,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495569192] [2019-11-19 22:39:05,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-19 22:39:05,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:05,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-19 22:39:05,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2019-11-19 22:39:05,797 INFO L87 Difference]: Start difference. First operand 156 states and 162 transitions. Second operand 34 states. [2019-11-19 22:39:07,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:07,244 INFO L93 Difference]: Finished difference Result 162 states and 168 transitions. [2019-11-19 22:39:07,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-19 22:39:07,245 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 51 [2019-11-19 22:39:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:07,246 INFO L225 Difference]: With dead ends: 162 [2019-11-19 22:39:07,247 INFO L226 Difference]: Without dead ends: 158 [2019-11-19 22:39:07,247 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2019-11-19 22:39:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-11-19 22:39:07,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2019-11-19 22:39:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-11-19 22:39:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 164 transitions. [2019-11-19 22:39:07,254 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 164 transitions. Word has length 51 [2019-11-19 22:39:07,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:07,255 INFO L462 AbstractCegarLoop]: Abstraction has 158 states and 164 transitions. [2019-11-19 22:39:07,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-19 22:39:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 164 transitions. [2019-11-19 22:39:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-19 22:39:07,256 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:07,256 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:07,457 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:07,457 INFO L410 AbstractCegarLoop]: === Iteration 14 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:07,458 INFO L82 PathProgramCache]: Analyzing trace with hash 931867598, now seen corresponding path program 2 times [2019-11-19 22:39:07,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:07,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1050115454] [2019-11-19 22:39:07,459 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:07,762 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-19 22:39:07,762 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:39:07,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-19 22:39:07,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:07,772 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 [2019-11-19 22:39:07,773 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:39:07,776 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:39:07,776 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:39:07,777 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:39:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:07,996 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:08,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1050115454] [2019-11-19 22:39:08,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:08,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-19 22:39:08,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657796573] [2019-11-19 22:39:08,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 22:39:08,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:08,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 22:39:08,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:39:08,095 INFO L87 Difference]: Start difference. First operand 158 states and 164 transitions. Second operand 13 states. [2019-11-19 22:39:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:09,065 INFO L93 Difference]: Finished difference Result 168 states and 173 transitions. [2019-11-19 22:39:09,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-19 22:39:09,066 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-11-19 22:39:09,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:09,067 INFO L225 Difference]: With dead ends: 168 [2019-11-19 22:39:09,067 INFO L226 Difference]: Without dead ends: 168 [2019-11-19 22:39:09,068 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-19 22:39:09,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-11-19 22:39:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 156. [2019-11-19 22:39:09,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-19 22:39:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 162 transitions. [2019-11-19 22:39:09,075 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 162 transitions. Word has length 53 [2019-11-19 22:39:09,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:09,076 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 162 transitions. [2019-11-19 22:39:09,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 22:39:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 162 transitions. [2019-11-19 22:39:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-19 22:39:09,077 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:09,077 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:09,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:09,286 INFO L410 AbstractCegarLoop]: === Iteration 15 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:09,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:09,287 INFO L82 PathProgramCache]: Analyzing trace with hash 931867599, now seen corresponding path program 1 times [2019-11-19 22:39:09,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:09,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1644638442] [2019-11-19 22:39:09,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:09,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-19 22:39:09,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:09,760 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2019-11-19 22:39:09,761 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:39:09,772 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:39:09,772 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:39:09,773 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:39:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:10,146 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:11,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1644638442] [2019-11-19 22:39:11,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:11,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-19 22:39:11,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172384100] [2019-11-19 22:39:11,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-19 22:39:11,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:11,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-19 22:39:11,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-19 22:39:11,153 INFO L87 Difference]: Start difference. First operand 156 states and 162 transitions. Second operand 23 states. [2019-11-19 22:39:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:14,121 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2019-11-19 22:39:14,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-19 22:39:14,122 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2019-11-19 22:39:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:14,123 INFO L225 Difference]: With dead ends: 154 [2019-11-19 22:39:14,123 INFO L226 Difference]: Without dead ends: 154 [2019-11-19 22:39:14,124 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-19 22:39:14,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-19 22:39:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-11-19 22:39:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-19 22:39:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 160 transitions. [2019-11-19 22:39:14,130 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 160 transitions. Word has length 53 [2019-11-19 22:39:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:14,131 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 160 transitions. [2019-11-19 22:39:14,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-19 22:39:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 160 transitions. [2019-11-19 22:39:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-19 22:39:14,132 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:14,132 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:14,337 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:14,338 INFO L410 AbstractCegarLoop]: === Iteration 16 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:14,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1375703933, now seen corresponding path program 1 times [2019-11-19 22:39:14,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:14,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [529341777] [2019-11-19 22:39:14,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:14,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:39:14,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:14,624 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:14,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [529341777] [2019-11-19 22:39:14,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:14,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2019-11-19 22:39:14,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994469816] [2019-11-19 22:39:14,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 22:39:14,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:14,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 22:39:14,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:39:14,783 INFO L87 Difference]: Start difference. First operand 154 states and 160 transitions. Second operand 8 states. [2019-11-19 22:39:14,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:14,830 INFO L93 Difference]: Finished difference Result 156 states and 161 transitions. [2019-11-19 22:39:14,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 22:39:14,831 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-11-19 22:39:14,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:14,832 INFO L225 Difference]: With dead ends: 156 [2019-11-19 22:39:14,832 INFO L226 Difference]: Without dead ends: 154 [2019-11-19 22:39:14,833 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-19 22:39:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-19 22:39:14,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-11-19 22:39:14,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-19 22:39:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2019-11-19 22:39:14,841 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 58 [2019-11-19 22:39:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:14,841 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2019-11-19 22:39:14,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 22:39:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2019-11-19 22:39:14,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-19 22:39:14,842 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:14,843 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:15,045 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:15,046 INFO L410 AbstractCegarLoop]: === Iteration 17 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:15,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2019597026, now seen corresponding path program 1 times [2019-11-19 22:39:15,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:15,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1103831467] [2019-11-19 22:39:15,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:15,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 22:39:15,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:15,399 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:15,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:39:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:15,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1103831467] [2019-11-19 22:39:15,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:15,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2019-11-19 22:39:15,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784019455] [2019-11-19 22:39:15,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 22:39:15,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:15,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 22:39:15,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:39:15,640 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand 11 states. [2019-11-19 22:39:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:15,734 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2019-11-19 22:39:15,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 22:39:15,735 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2019-11-19 22:39:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:15,737 INFO L225 Difference]: With dead ends: 158 [2019-11-19 22:39:15,737 INFO L226 Difference]: Without dead ends: 154 [2019-11-19 22:39:15,737 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:39:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-19 22:39:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-11-19 22:39:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-19 22:39:15,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2019-11-19 22:39:15,743 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 63 [2019-11-19 22:39:15,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:15,744 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 158 transitions. [2019-11-19 22:39:15,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 22:39:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 158 transitions. [2019-11-19 22:39:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-19 22:39:15,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:15,746 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:15,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:15,950 INFO L410 AbstractCegarLoop]: === Iteration 18 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:15,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:15,950 INFO L82 PathProgramCache]: Analyzing trace with hash -948824625, now seen corresponding path program 1 times [2019-11-19 22:39:15,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:15,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1573784389] [2019-11-19 22:39:15,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:16,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-19 22:39:16,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:16,375 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 [2019-11-19 22:39:16,375 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:39:16,377 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:39:16,378 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:39:16,378 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:39:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:16,940 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:17,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1573784389] [2019-11-19 22:39:17,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:17,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 14] imperfect sequences [] total 19 [2019-11-19 22:39:17,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774251887] [2019-11-19 22:39:17,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-19 22:39:17,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:17,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-19 22:39:17,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2019-11-19 22:39:17,368 INFO L87 Difference]: Start difference. First operand 154 states and 158 transitions. Second operand 20 states. [2019-11-19 22:39:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:19,560 INFO L93 Difference]: Finished difference Result 164 states and 167 transitions. [2019-11-19 22:39:19,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-19 22:39:19,561 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2019-11-19 22:39:19,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:19,562 INFO L225 Difference]: With dead ends: 164 [2019-11-19 22:39:19,562 INFO L226 Difference]: Without dead ends: 164 [2019-11-19 22:39:19,562 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2019-11-19 22:39:19,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-19 22:39:19,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 152. [2019-11-19 22:39:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-19 22:39:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2019-11-19 22:39:19,568 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 74 [2019-11-19 22:39:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:19,569 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2019-11-19 22:39:19,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-19 22:39:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2019-11-19 22:39:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-19 22:39:19,570 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:19,571 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:19,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:19,784 INFO L410 AbstractCegarLoop]: === Iteration 19 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:19,784 INFO L82 PathProgramCache]: Analyzing trace with hash -948824624, now seen corresponding path program 1 times [2019-11-19 22:39:19,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:19,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [581298217] [2019-11-19 22:39:19,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:20,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-19 22:39:20,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:20,294 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 [2019-11-19 22:39:20,294 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:39:20,300 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:39:20,301 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:39:20,301 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:39:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:21,038 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:23,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [581298217] [2019-11-19 22:39:23,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:23,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 16] imperfect sequences [] total 34 [2019-11-19 22:39:23,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991515072] [2019-11-19 22:39:23,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-19 22:39:23,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:23,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-19 22:39:23,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2019-11-19 22:39:23,475 INFO L87 Difference]: Start difference. First operand 152 states and 156 transitions. Second operand 35 states. [2019-11-19 22:39:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:28,508 INFO L93 Difference]: Finished difference Result 150 states and 154 transitions. [2019-11-19 22:39:28,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-19 22:39:28,509 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 74 [2019-11-19 22:39:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:28,510 INFO L225 Difference]: With dead ends: 150 [2019-11-19 22:39:28,511 INFO L226 Difference]: Without dead ends: 150 [2019-11-19 22:39:28,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2019-11-19 22:39:28,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-19 22:39:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-11-19 22:39:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-19 22:39:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 154 transitions. [2019-11-19 22:39:28,517 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 154 transitions. Word has length 74 [2019-11-19 22:39:28,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:28,517 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 154 transitions. [2019-11-19 22:39:28,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-19 22:39:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 154 transitions. [2019-11-19 22:39:28,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-19 22:39:28,518 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:28,519 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:28,719 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:28,719 INFO L410 AbstractCegarLoop]: === Iteration 20 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:28,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:28,720 INFO L82 PathProgramCache]: Analyzing trace with hash 376807871, now seen corresponding path program 1 times [2019-11-19 22:39:28,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:28,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [312868988] [2019-11-19 22:39:28,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:29,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:39:29,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:29,119 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:29,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:39:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:29,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [312868988] [2019-11-19 22:39:29,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:29,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 14 [2019-11-19 22:39:29,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262305083] [2019-11-19 22:39:29,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-19 22:39:29,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:29,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-19 22:39:29,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-19 22:39:29,350 INFO L87 Difference]: Start difference. First operand 150 states and 154 transitions. Second operand 14 states. [2019-11-19 22:39:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:29,472 INFO L93 Difference]: Finished difference Result 156 states and 159 transitions. [2019-11-19 22:39:29,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-19 22:39:29,472 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2019-11-19 22:39:29,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:29,474 INFO L225 Difference]: With dead ends: 156 [2019-11-19 22:39:29,474 INFO L226 Difference]: Without dead ends: 150 [2019-11-19 22:39:29,474 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-11-19 22:39:29,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-19 22:39:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-11-19 22:39:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-19 22:39:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2019-11-19 22:39:29,479 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 85 [2019-11-19 22:39:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:29,480 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2019-11-19 22:39:29,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-19 22:39:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2019-11-19 22:39:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-19 22:39:29,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:29,482 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:29,685 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:29,686 INFO L410 AbstractCegarLoop]: === Iteration 21 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:29,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:29,686 INFO L82 PathProgramCache]: Analyzing trace with hash -331568998, now seen corresponding path program 1 times [2019-11-19 22:39:29,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:29,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [822124014] [2019-11-19 22:39:29,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:30,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 30 conjunts are in the unsatisfiable core [2019-11-19 22:39:30,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:30,206 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 [2019-11-19 22:39:30,206 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:39:30,208 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:39:30,208 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:39:30,209 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:39:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:30,791 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:31,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [822124014] [2019-11-19 22:39:31,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:31,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 14] imperfect sequences [] total 19 [2019-11-19 22:39:31,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436590303] [2019-11-19 22:39:31,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-19 22:39:31,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:31,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-19 22:39:31,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2019-11-19 22:39:31,349 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand 20 states. [2019-11-19 22:39:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:33,186 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2019-11-19 22:39:33,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-19 22:39:33,186 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 98 [2019-11-19 22:39:33,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:33,187 INFO L225 Difference]: With dead ends: 164 [2019-11-19 22:39:33,188 INFO L226 Difference]: Without dead ends: 164 [2019-11-19 22:39:33,188 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2019-11-19 22:39:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-19 22:39:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 148. [2019-11-19 22:39:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-19 22:39:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 151 transitions. [2019-11-19 22:39:33,193 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 151 transitions. Word has length 98 [2019-11-19 22:39:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:33,194 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 151 transitions. [2019-11-19 22:39:33,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-19 22:39:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 151 transitions. [2019-11-19 22:39:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-19 22:39:33,195 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:33,196 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:33,401 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:33,402 INFO L410 AbstractCegarLoop]: === Iteration 22 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:33,402 INFO L82 PathProgramCache]: Analyzing trace with hash -331568997, now seen corresponding path program 1 times [2019-11-19 22:39:33,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:33,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1274637688] [2019-11-19 22:39:33,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:34,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-19 22:39:34,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:34,030 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 [2019-11-19 22:39:34,030 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:39:34,037 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:39:34,037 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:39:34,037 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:39:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:34,690 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:37,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1274637688] [2019-11-19 22:39:37,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:37,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 16] imperfect sequences [] total 34 [2019-11-19 22:39:37,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098698080] [2019-11-19 22:39:37,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-19 22:39:37,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:37,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-19 22:39:37,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2019-11-19 22:39:37,129 INFO L87 Difference]: Start difference. First operand 148 states and 151 transitions. Second operand 35 states. [2019-11-19 22:39:41,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:41,863 INFO L93 Difference]: Finished difference Result 146 states and 149 transitions. [2019-11-19 22:39:41,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-19 22:39:41,864 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 98 [2019-11-19 22:39:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:41,865 INFO L225 Difference]: With dead ends: 146 [2019-11-19 22:39:41,865 INFO L226 Difference]: Without dead ends: 146 [2019-11-19 22:39:41,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 156 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2019-11-19 22:39:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-19 22:39:41,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-11-19 22:39:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-19 22:39:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2019-11-19 22:39:41,873 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 98 [2019-11-19 22:39:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:41,873 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2019-11-19 22:39:41,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-19 22:39:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2019-11-19 22:39:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-19 22:39:41,875 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:41,875 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:42,081 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:42,081 INFO L410 AbstractCegarLoop]: === Iteration 23 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:42,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:42,082 INFO L82 PathProgramCache]: Analyzing trace with hash 2050986455, now seen corresponding path program 1 times [2019-11-19 22:39:42,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:42,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1210260399] [2019-11-19 22:39:42,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:42,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 22:39:42,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:42,455 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:42,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1210260399] [2019-11-19 22:39:42,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:42,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2019-11-19 22:39:42,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174704210] [2019-11-19 22:39:42,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 22:39:42,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:42,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 22:39:42,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:39:42,769 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand 11 states. [2019-11-19 22:39:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:42,862 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2019-11-19 22:39:42,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 22:39:42,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 96 [2019-11-19 22:39:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:42,867 INFO L225 Difference]: With dead ends: 148 [2019-11-19 22:39:42,867 INFO L226 Difference]: Without dead ends: 146 [2019-11-19 22:39:42,867 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:39:42,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-19 22:39:42,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-11-19 22:39:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-19 22:39:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2019-11-19 22:39:42,873 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 96 [2019-11-19 22:39:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:42,874 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2019-11-19 22:39:42,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 22:39:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2019-11-19 22:39:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-19 22:39:42,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:42,879 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:43,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:43,080 INFO L410 AbstractCegarLoop]: === Iteration 24 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:43,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:43,080 INFO L82 PathProgramCache]: Analyzing trace with hash 234592651, now seen corresponding path program 1 times [2019-11-19 22:39:43,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:43,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1290022069] [2019-11-19 22:39:43,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:43,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 42 conjunts are in the unsatisfiable core [2019-11-19 22:39:43,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:43,673 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 [2019-11-19 22:39:43,673 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:39:43,681 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:39:43,681 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:39:43,682 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:39:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:44,608 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:45,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1290022069] [2019-11-19 22:39:45,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:45,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 18] imperfect sequences [] total 23 [2019-11-19 22:39:45,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618387644] [2019-11-19 22:39:45,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-19 22:39:45,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:45,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-19 22:39:45,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2019-11-19 22:39:45,170 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 24 states. [2019-11-19 22:39:47,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:47,395 INFO L93 Difference]: Finished difference Result 156 states and 157 transitions. [2019-11-19 22:39:47,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-19 22:39:47,395 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 111 [2019-11-19 22:39:47,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:47,397 INFO L225 Difference]: With dead ends: 156 [2019-11-19 22:39:47,397 INFO L226 Difference]: Without dead ends: 156 [2019-11-19 22:39:47,398 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 189 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-11-19 22:39:47,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-19 22:39:47,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 144. [2019-11-19 22:39:47,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-19 22:39:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions. [2019-11-19 22:39:47,403 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 111 [2019-11-19 22:39:47,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:47,403 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 146 transitions. [2019-11-19 22:39:47,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-19 22:39:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 146 transitions. [2019-11-19 22:39:47,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-19 22:39:47,404 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:47,405 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:47,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:47,611 INFO L410 AbstractCegarLoop]: === Iteration 25 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:47,612 INFO L82 PathProgramCache]: Analyzing trace with hash 234592652, now seen corresponding path program 1 times [2019-11-19 22:39:47,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:47,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1679730461] [2019-11-19 22:39:47,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:48,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 52 conjunts are in the unsatisfiable core [2019-11-19 22:39:48,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:48,323 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 [2019-11-19 22:39:48,323 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:39:48,336 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:39:48,336 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:39:48,336 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 22:39:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:49,454 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:39:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:52,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1679730461] [2019-11-19 22:39:52,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:39:52,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 20] imperfect sequences [] total 42 [2019-11-19 22:39:52,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967435991] [2019-11-19 22:39:52,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-11-19 22:39:52,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:39:52,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-11-19 22:39:52,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1685, Unknown=0, NotChecked=0, Total=1806 [2019-11-19 22:39:52,854 INFO L87 Difference]: Start difference. First operand 144 states and 146 transitions. Second operand 43 states. [2019-11-19 22:39:58,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:39:58,439 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2019-11-19 22:39:58,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-19 22:39:58,440 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 111 [2019-11-19 22:39:58,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:39:58,442 INFO L225 Difference]: With dead ends: 142 [2019-11-19 22:39:58,442 INFO L226 Difference]: Without dead ends: 142 [2019-11-19 22:39:58,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 172 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=176, Invalid=2374, Unknown=0, NotChecked=0, Total=2550 [2019-11-19 22:39:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-19 22:39:58,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2019-11-19 22:39:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-11-19 22:39:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2019-11-19 22:39:58,448 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 111 [2019-11-19 22:39:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:39:58,448 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2019-11-19 22:39:58,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-11-19 22:39:58,449 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2019-11-19 22:39:58,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-19 22:39:58,450 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:39:58,450 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:39:58,657 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:58,657 INFO L410 AbstractCegarLoop]: === Iteration 26 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:39:58,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:39:58,658 INFO L82 PathProgramCache]: Analyzing trace with hash 838120684, now seen corresponding path program 1 times [2019-11-19 22:39:58,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:39:58,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [492321732] [2019-11-19 22:39:58,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:39:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:39:59,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-19 22:39:59,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:39:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:39:59,997 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:40:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-19 22:40:01,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [492321732] [2019-11-19 22:40:01,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:40:01,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 19] imperfect sequences [] total 38 [2019-11-19 22:40:01,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528158927] [2019-11-19 22:40:01,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-19 22:40:01,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:40:01,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-19 22:40:01,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2019-11-19 22:40:01,086 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 39 states. [2019-11-19 22:40:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:40:03,239 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2019-11-19 22:40:03,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-19 22:40:03,240 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 114 [2019-11-19 22:40:03,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:40:03,241 INFO L225 Difference]: With dead ends: 141 [2019-11-19 22:40:03,241 INFO L226 Difference]: Without dead ends: 141 [2019-11-19 22:40:03,242 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 186 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=160, Invalid=1910, Unknown=0, NotChecked=0, Total=2070 [2019-11-19 22:40:03,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-11-19 22:40:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-11-19 22:40:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-11-19 22:40:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2019-11-19 22:40:03,245 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 114 [2019-11-19 22:40:03,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:40:03,246 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2019-11-19 22:40:03,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-19 22:40:03,246 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2019-11-19 22:40:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-19 22:40:03,247 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:40:03,247 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:40:03,447 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:40:03,448 INFO L410 AbstractCegarLoop]: === Iteration 27 === [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, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-19 22:40:03,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:40:03,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1808716303, now seen corresponding path program 1 times [2019-11-19 22:40:03,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:40:03,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [402256488] [2019-11-19 22:40:03,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53b7ec5d-e5d6-4882-ad32-df9eeb28cf01/bin/uautomizer/cvc4 Starting monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:40:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:40:04,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 138 conjunts are in the unsatisfiable core [2019-11-19 22:40:04,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:40:04,493 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 12 [2019-11-19 22:40:04,494 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:40:04,503 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:40:04,503 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:40:04,503 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-11-19 22:40:04,559 INFO L343 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2019-11-19 22:40:04,560 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 29 treesize of output 28 [2019-11-19 22:40:04,560 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:40:04,575 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:40:04,575 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:40:04,576 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-11-19 22:40:04,660 INFO L343 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2019-11-19 22:40:04,660 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 36 treesize of output 38 [2019-11-19 22:40:04,661 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:40:04,677 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:40:04,677 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:40:04,677 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2019-11-19 22:40:04,894 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2019-11-19 22:40:04,895 INFO L343 Elim1Store]: treesize reduction 32, result has 77.5 percent of original size [2019-11-19 22:40:04,895 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 137 [2019-11-19 22:40:04,896 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:40:04,978 INFO L567 ElimStorePlain]: treesize reduction 84, result has 35.9 percent of original size [2019-11-19 22:40:04,978 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:40:04,978 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:47 [2019-11-19 22:40:41,711 WARN L191 SmtUtils]: Spent 36.67 s on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2019-11-19 22:40:41,711 INFO L343 Elim1Store]: treesize reduction 65, result has 70.7 percent of original size [2019-11-19 22:40:41,711 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 189 [2019-11-19 22:40:41,712 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:40:43,868 WARN L191 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2019-11-19 22:40:43,868 INFO L567 ElimStorePlain]: treesize reduction 84, result has 41.3 percent of original size [2019-11-19 22:40:43,868 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:40:43,869 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2019-11-19 22:40:44,083 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 28 [2019-11-19 22:40:44,083 INFO L343 Elim1Store]: treesize reduction 246, result has 15.2 percent of original size [2019-11-19 22:40:44,084 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 80 [2019-11-19 22:40:44,085 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:40:44,152 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:40:44,152 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:40:44,152 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:70 [2019-11-19 22:40:44,700 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2019-11-19 22:40:44,700 INFO L343 Elim1Store]: treesize reduction 170, result has 57.2 percent of original size [2019-11-19 22:40:44,701 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 269 [2019-11-19 22:40:44,702 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:40:46,930 WARN L191 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-11-19 22:40:46,930 INFO L567 ElimStorePlain]: treesize reduction 174, result has 32.0 percent of original size [2019-11-19 22:40:46,930 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:40:46,931 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:86, output treesize:82 [2019-11-19 22:42:00,567 WARN L191 SmtUtils]: Spent 1.23 m on a formula simplification. DAG size of input: 163 DAG size of output: 98 [2019-11-19 22:42:00,567 INFO L343 Elim1Store]: treesize reduction 203, result has 60.7 percent of original size [2019-11-19 22:42:00,567 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 93 treesize of output 360 [2019-11-19 22:42:00,570 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:42:02,906 WARN L191 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 83 DAG size of output: 41 [2019-11-19 22:42:02,906 INFO L567 ElimStorePlain]: treesize reduction 304, result has 23.2 percent of original size [2019-11-19 22:42:02,906 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:42:02,906 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:96, output treesize:92 [2019-11-19 22:44:29,589 WARN L191 SmtUtils]: Spent 2.44 m on a formula simplification. DAG size of input: 201 DAG size of output: 127 [2019-11-19 22:44:29,590 INFO L343 Elim1Store]: treesize reduction 250, result has 61.5 percent of original size [2019-11-19 22:44:29,590 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 451 [2019-11-19 22:44:29,592 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:44:29,896 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 45 [2019-11-19 22:44:29,896 INFO L567 ElimStorePlain]: treesize reduction 304, result has 25.5 percent of original size [2019-11-19 22:44:29,896 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:44:29,897 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:108, output treesize:104 [2019-11-19 22:48:09,382 WARN L191 SmtUtils]: Spent 3.66 m on a formula simplification. DAG size of input: 243 DAG size of output: 156 [2019-11-19 22:48:09,383 INFO L343 Elim1Store]: treesize reduction 311, result has 60.9 percent of original size [2019-11-19 22:48:09,383 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 117 treesize of output 542 [2019-11-19 22:48:09,386 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:48:09,689 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2019-11-19 22:48:09,690 INFO L567 ElimStorePlain]: treesize reduction 304, result has 27.6 percent of original size [2019-11-19 22:48:09,690 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:48:09,690 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:120, output treesize:116 [2019-11-19 22:49:32,004 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-19 22:49:32,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:49:32,205 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:118) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:178) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplifyWithStatistics(SmtUtils.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:361) 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.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 55 more [2019-11-19 22:49:32,209 INFO L168 Benchmark]: Toolchain (without parser) took 648666.29 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 411.6 MB). Free memory was 947.4 MB in the beginning and 1.2 GB in the end (delta: -283.1 MB). Peak memory consumption was 128.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:49:32,209 INFO L168 Benchmark]: CDTParser took 0.25 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. [2019-11-19 22:49:32,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 961.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -149.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:49:32,209 INFO L168 Benchmark]: Boogie Preprocessor took 104.14 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. [2019-11-19 22:49:32,210 INFO L168 Benchmark]: RCFGBuilder took 1800.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 981.7 MB in the end (delta: 109.2 MB). Peak memory consumption was 109.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:49:32,210 INFO L168 Benchmark]: TraceAbstraction took 645790.30 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 276.3 MB). Free memory was 981.7 MB in the beginning and 1.2 GB in the end (delta: -248.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-11-19 22:49:32,212 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 961.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -149.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 104.14 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 1800.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 981.7 MB in the end (delta: 109.2 MB). Peak memory consumption was 109.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 645790.30 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 276.3 MB). Free memory was 981.7 MB in the beginning and 1.2 GB in the end (delta: -248.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...