./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.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_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/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 902bca7b1502ca5dcb44bb7e7d9bc6d169c57d43 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 02:30:29,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:30:29,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:30:29,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:30:29,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:30:29,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:30:29,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:30:29,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:30:29,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:30:29,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:30:29,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:30:29,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:30:29,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:30:29,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:30:29,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:30:29,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:30:29,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:30:29,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:30:29,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:30:29,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:30:29,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:30:29,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:30:29,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:30:29,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:30:29,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:30:29,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:30:29,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:30:29,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:30:29,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:30:29,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:30:29,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:30:29,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:30:29,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:30:29,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:30:29,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:30:29,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:30:29,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:30:29,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:30:29,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:30:29,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:30:29,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:30:29,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 02:30:29,764 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:30:29,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:30:29,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:30:29,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:30:29,766 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:30:29,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:30:29,766 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:30:29,766 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 02:30:29,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 02:30:29,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:30:29,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:30:29,767 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 02:30:29,767 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 02:30:29,767 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 02:30:29,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:30:29,768 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 02:30:29,768 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 02:30:29,768 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:30:29,768 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:30:29,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:30:29,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:30:29,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:30:29,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 02:30:29,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:30:29,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:30:29,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:30:29,770 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 02:30:29,770 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 02:30:29,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 02:30:29,770 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_75d4ee90-c0fe-4479-94ee-b861f53c5e03/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 -> 902bca7b1502ca5dcb44bb7e7d9bc6d169c57d43 [2019-11-20 02:30:29,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:30:29,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:30:29,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:30:29,956 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:30:29,957 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:30:29,958 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2019-11-20 02:30:30,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/data/93e5ac9b1/0d863d4c55c3461bb090482d401d5f0e/FLAGd9355b504 [2019-11-20 02:30:30,481 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:30:30,481 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2019-11-20 02:30:30,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/data/93e5ac9b1/0d863d4c55c3461bb090482d401d5f0e/FLAGd9355b504 [2019-11-20 02:30:30,849 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/data/93e5ac9b1/0d863d4c55c3461bb090482d401d5f0e [2019-11-20 02:30:30,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:30:30,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 02:30:30,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:30:30,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:30:30,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:30:30,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:30:30" (1/1) ... [2019-11-20 02:30:30,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@261d23b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:30, skipping insertion in model container [2019-11-20 02:30:30,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:30:30" (1/1) ... [2019-11-20 02:30:30,866 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:30:30,915 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:30:31,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:30:31,443 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:30:31,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:30:31,596 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:30:31,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:31 WrapperNode [2019-11-20 02:30:31,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:30:31,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:30:31,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:30:31,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:30:31,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:31" (1/1) ... [2019-11-20 02:30:31,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:31" (1/1) ... [2019-11-20 02:30:31,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:31" (1/1) ... [2019-11-20 02:30:31,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:31" (1/1) ... [2019-11-20 02:30:31,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:31" (1/1) ... [2019-11-20 02:30:31,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:31" (1/1) ... [2019-11-20 02:30:31,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:31" (1/1) ... [2019-11-20 02:30:31,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:30:31,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:30:31,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:30:31,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:30:31,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:30:31,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 02:30:31,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:30:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 02:30:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 02:30:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 02:30:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 02:30:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 02:30:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 02:30:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-20 02:30:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-20 02:30:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-20 02:30:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-20 02:30:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-20 02:30:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-20 02:30:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-20 02:30:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-20 02:30:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-20 02:30:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-20 02:30:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-20 02:30:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-20 02:30:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-20 02:30:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-20 02:30:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-20 02:30:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-20 02:30:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-20 02:30:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-20 02:30:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-20 02:30:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-20 02:30:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-20 02:30:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-20 02:30:31,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-20 02:30:31,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-20 02:30:31,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-20 02:30:31,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-20 02:30:31,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-20 02:30:31,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-20 02:30:31,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-20 02:30:31,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-20 02:30:31,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-20 02:30:31,781 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-20 02:30:31,781 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-20 02:30:31,781 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2019-11-20 02:30:31,781 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2019-11-20 02:30:31,781 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-20 02:30:31,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 02:30:31,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-20 02:30:31,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-20 02:30:31,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-20 02:30:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 02:30:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 02:30:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 02:30:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 02:30:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 02:30:31,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 02:30:31,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 02:30:31,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 02:30:31,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 02:30:31,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 02:30:31,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 02:30:31,784 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 02:30:31,784 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 02:30:31,784 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 02:30:31,784 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 02:30:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 02:30:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 02:30:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 02:30:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 02:30:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 02:30:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 02:30:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 02:30:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 02:30:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 02:30:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 02:30:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 02:30:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 02:30:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 02:30:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 02:30:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 02:30:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 02:30:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 02:30:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 02:30:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 02:30:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 02:30:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 02:30:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 02:30:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 02:30:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 02:30:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 02:30:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 02:30:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 02:30:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 02:30:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 02:30:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 02:30:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 02:30:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 02:30:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 02:30:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 02:30:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 02:30:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 02:30:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 02:30:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 02:30:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 02:30:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 02:30:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 02:30:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 02:30:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 02:30:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 02:30:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 02:30:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 02:30:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 02:30:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 02:30:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 02:30:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 02:30:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 02:30:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 02:30:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 02:30:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 02:30:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 02:30:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 02:30:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 02:30:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 02:30:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 02:30:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 02:30:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 02:30:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 02:30:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 02:30:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 02:30:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 02:30:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 02:30:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 02:30:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 02:30:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 02:30:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 02:30:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 02:30:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 02:30:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 02:30:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 02:30:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 02:30:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 02:30:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 02:30:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 02:30:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 02:30:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 02:30:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 02:30:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 02:30:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 02:30:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 02:30:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 02:30:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 02:30:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 02:30:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 02:30:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 02:30:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 02:30:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 02:30:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 02:30:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-20 02:30:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 02:30:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-20 02:30:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-20 02:30:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-20 02:30:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-20 02:30:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-20 02:30:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-20 02:30:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 02:30:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-20 02:30:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-20 02:30:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-20 02:30:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 02:30:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-20 02:30:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-20 02:30:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-20 02:30:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 02:30:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-20 02:30:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-20 02:30:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-20 02:30:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-20 02:30:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-20 02:30:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-20 02:30:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 02:30:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-20 02:30:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-20 02:30:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-20 02:30:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-20 02:30:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-20 02:30:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 02:30:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 02:30:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-20 02:30:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-20 02:30:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 02:30:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-20 02:30:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-20 02:30:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-20 02:30:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-20 02:30:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-20 02:30:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-20 02:30:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-20 02:30:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-20 02:30:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-20 02:30:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-20 02:30:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-20 02:30:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-20 02:30:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-20 02:30:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-20 02:30:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-20 02:30:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2019-11-20 02:30:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2019-11-20 02:30:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-20 02:30:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 02:30:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 02:30:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 02:30:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 02:30:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:30:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-20 02:30:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-20 02:30:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-20 02:30:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-20 02:30:32,405 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 02:30:32,797 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 02:30:33,351 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:30:33,351 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 02:30:33,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:30:33 BoogieIcfgContainer [2019-11-20 02:30:33,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:30:33,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 02:30:33,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 02:30:33,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 02:30:33,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:30:30" (1/3) ... [2019-11-20 02:30:33,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ff3dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:30:33, skipping insertion in model container [2019-11-20 02:30:33,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:30:31" (2/3) ... [2019-11-20 02:30:33,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ff3dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:30:33, skipping insertion in model container [2019-11-20 02:30:33,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:30:33" (3/3) ... [2019-11-20 02:30:33,359 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-2.i [2019-11-20 02:30:33,367 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 02:30:33,374 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 90 error locations. [2019-11-20 02:30:33,386 INFO L249 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2019-11-20 02:30:33,403 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 02:30:33,404 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 02:30:33,404 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 02:30:33,404 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:30:33,404 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:30:33,404 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 02:30:33,404 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:30:33,404 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 02:30:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2019-11-20 02:30:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 02:30:33,431 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:30:33,432 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:30:33,433 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:30:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:30:33,438 INFO L82 PathProgramCache]: Analyzing trace with hash 597436025, now seen corresponding path program 1 times [2019-11-20 02:30:33,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:30:33,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [251029483] [2019-11-20 02:30:33,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:30:33,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 02:30:33,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:30:33,817 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:30:33,817 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:30:33,826 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:30:33,826 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:30:33,826 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 02:30:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:33,863 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:30:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:33,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [251029483] [2019-11-20 02:30:33,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:30:33,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 02:30:33,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37994454] [2019-11-20 02:30:33,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 02:30:33,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:30:33,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 02:30:33,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:30:33,961 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 5 states. [2019-11-20 02:30:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:30:34,286 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2019-11-20 02:30:34,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 02:30:34,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-20 02:30:34,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:30:34,299 INFO L225 Difference]: With dead ends: 93 [2019-11-20 02:30:34,300 INFO L226 Difference]: Without dead ends: 90 [2019-11-20 02:30:34,301 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:30:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-20 02:30:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2019-11-20 02:30:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-20 02:30:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2019-11-20 02:30:34,368 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 22 [2019-11-20 02:30:34,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:30:34,369 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2019-11-20 02:30:34,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 02:30:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2019-11-20 02:30:34,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 02:30:34,371 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:30:34,372 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:30:34,575 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:34,576 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:30:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:30:34,577 INFO L82 PathProgramCache]: Analyzing trace with hash 597436026, now seen corresponding path program 1 times [2019-11-20 02:30:34,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:30:34,577 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [341617551] [2019-11-20 02:30:34,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:30:34,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 02:30:34,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:30:34,893 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:30:34,893 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:30:34,905 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:30:34,906 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:30:34,906 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 02:30:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:35,096 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:30:35,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:30:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:36,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [341617551] [2019-11-20 02:30:36,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:30:36,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 17 [2019-11-20 02:30:36,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939349722] [2019-11-20 02:30:36,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 02:30:36,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:30:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 02:30:36,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-11-20 02:30:36,403 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 18 states. [2019-11-20 02:30:38,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:30:38,008 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2019-11-20 02:30:38,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 02:30:38,009 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2019-11-20 02:30:38,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:30:38,010 INFO L225 Difference]: With dead ends: 98 [2019-11-20 02:30:38,011 INFO L226 Difference]: Without dead ends: 98 [2019-11-20 02:30:38,011 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2019-11-20 02:30:38,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-20 02:30:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2019-11-20 02:30:38,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-20 02:30:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2019-11-20 02:30:38,022 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 22 [2019-11-20 02:30:38,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:30:38,023 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2019-11-20 02:30:38,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 02:30:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2019-11-20 02:30:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 02:30:38,024 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:30:38,024 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:30:38,224 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:38,225 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:30:38,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:30:38,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1484939706, now seen corresponding path program 1 times [2019-11-20 02:30:38,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:30:38,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1053277253] [2019-11-20 02:30:38,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:30:38,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 02:30:38,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:30:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:38,489 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:30:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:38,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1053277253] [2019-11-20 02:30:38,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:30:38,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 02:30:38,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248545975] [2019-11-20 02:30:38,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 02:30:38,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:30:38,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 02:30:38,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:30:38,534 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand 5 states. [2019-11-20 02:30:38,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:30:38,597 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2019-11-20 02:30:38,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 02:30:38,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-20 02:30:38,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:30:38,599 INFO L225 Difference]: With dead ends: 90 [2019-11-20 02:30:38,599 INFO L226 Difference]: Without dead ends: 90 [2019-11-20 02:30:38,600 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:30:38,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-20 02:30:38,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2019-11-20 02:30:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-20 02:30:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2019-11-20 02:30:38,608 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 22 [2019-11-20 02:30:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:30:38,609 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2019-11-20 02:30:38,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 02:30:38,609 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2019-11-20 02:30:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 02:30:38,610 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:30:38,610 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:30:38,813 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:38,813 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:30:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:30:38,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1341474425, now seen corresponding path program 1 times [2019-11-20 02:30:38,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:30:38,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [138671980] [2019-11-20 02:30:38,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:30:39,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 02:30:39,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:30:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:39,036 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:30:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:39,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [138671980] [2019-11-20 02:30:39,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:30:39,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 02:30:39,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523089609] [2019-11-20 02:30:39,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 02:30:39,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:30:39,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 02:30:39,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:30:39,121 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 5 states. [2019-11-20 02:30:39,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:30:39,176 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2019-11-20 02:30:39,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 02:30:39,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-20 02:30:39,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:30:39,179 INFO L225 Difference]: With dead ends: 90 [2019-11-20 02:30:39,179 INFO L226 Difference]: Without dead ends: 90 [2019-11-20 02:30:39,179 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:30:39,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-20 02:30:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2019-11-20 02:30:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-20 02:30:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2019-11-20 02:30:39,186 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 23 [2019-11-20 02:30:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:30:39,187 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2019-11-20 02:30:39,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 02:30:39,187 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2019-11-20 02:30:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 02:30:39,188 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:30:39,188 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:30:39,390 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:39,390 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:30:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:30:39,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1210682536, now seen corresponding path program 1 times [2019-11-20 02:30:39,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:30:39,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1995007978] [2019-11-20 02:30:39,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:30:39,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 02:30:39,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:30:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:39,579 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:30:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:39,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1995007978] [2019-11-20 02:30:39,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:30:39,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 02:30:39,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213298309] [2019-11-20 02:30:39,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 02:30:39,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:30:39,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 02:30:39,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 02:30:39,638 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 3 states. [2019-11-20 02:30:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:30:39,745 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2019-11-20 02:30:39,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 02:30:39,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-20 02:30:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:30:39,747 INFO L225 Difference]: With dead ends: 126 [2019-11-20 02:30:39,747 INFO L226 Difference]: Without dead ends: 121 [2019-11-20 02:30:39,747 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 02:30:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-11-20 02:30:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 86. [2019-11-20 02:30:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-20 02:30:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2019-11-20 02:30:39,755 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 23 [2019-11-20 02:30:39,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:30:39,755 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2019-11-20 02:30:39,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 02:30:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2019-11-20 02:30:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 02:30:39,756 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:30:39,757 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:30:39,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:39,957 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:30:39,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:30:39,958 INFO L82 PathProgramCache]: Analyzing trace with hash -343863878, now seen corresponding path program 1 times [2019-11-20 02:30:39,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:30:39,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1158419929] [2019-11-20 02:30:39,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:30:40,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 02:30:40,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:30:40,209 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:30:40,210 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:30:40,215 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:30:40,215 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:30:40,215 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 02:30:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:40,553 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:30:42,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:30:42,800 WARN L191 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-11-20 02:30:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:43,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1158419929] [2019-11-20 02:30:43,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:30:43,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2019-11-20 02:30:43,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53718853] [2019-11-20 02:30:43,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-20 02:30:43,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:30:43,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-20 02:30:43,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2019-11-20 02:30:43,353 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 25 states. [2019-11-20 02:30:45,160 WARN L191 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2019-11-20 02:30:45,488 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2019-11-20 02:30:45,909 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2019-11-20 02:30:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:30:47,747 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2019-11-20 02:30:47,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-20 02:30:47,748 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2019-11-20 02:30:47,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:30:47,749 INFO L225 Difference]: With dead ends: 101 [2019-11-20 02:30:47,749 INFO L226 Difference]: Without dead ends: 101 [2019-11-20 02:30:47,750 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 02:30:47,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-20 02:30:47,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2019-11-20 02:30:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-20 02:30:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2019-11-20 02:30:47,759 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 28 [2019-11-20 02:30:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:30:47,759 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2019-11-20 02:30:47,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-20 02:30:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2019-11-20 02:30:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 02:30:47,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:30:47,761 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] [2019-11-20 02:30:47,964 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:47,964 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:30:47,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:30:47,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2025519899, now seen corresponding path program 1 times [2019-11-20 02:30:47,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:30:47,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1223129194] [2019-11-20 02:30:47,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:30:48,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 02:30:48,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:30:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:48,286 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:30:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:48,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1223129194] [2019-11-20 02:30:48,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:30:48,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2019-11-20 02:30:48,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336613611] [2019-11-20 02:30:48,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 02:30:48,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:30:48,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 02:30:48,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-20 02:30:48,465 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 14 states. [2019-11-20 02:30:48,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:30:48,790 INFO L93 Difference]: Finished difference Result 140 states and 160 transitions. [2019-11-20 02:30:48,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 02:30:48,791 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2019-11-20 02:30:48,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:30:48,793 INFO L225 Difference]: With dead ends: 140 [2019-11-20 02:30:48,793 INFO L226 Difference]: Without dead ends: 137 [2019-11-20 02:30:48,794 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-11-20 02:30:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-11-20 02:30:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2019-11-20 02:30:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-20 02:30:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2019-11-20 02:30:48,812 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 35 [2019-11-20 02:30:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:30:48,812 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2019-11-20 02:30:48,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 02:30:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2019-11-20 02:30:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 02:30:48,816 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:30:48,816 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:30:49,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:49,019 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:30:49,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:30:49,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1928439432, now seen corresponding path program 1 times [2019-11-20 02:30:49,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:30:49,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1424885452] [2019-11-20 02:30:49,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:30:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:30:49,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 02:30:49,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:30:49,272 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:30:49,272 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:30:49,274 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:30:49,274 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:30:49,274 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 02:30:49,367 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:30:49,367 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2019-11-20 02:30:49,368 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:30:49,384 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-20 02:30:49,385 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:30:49,385 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2019-11-20 02:30:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:30:49,409 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:30:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:30:53,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1424885452] [2019-11-20 02:30:53,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 02:30:53,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-11-20 02:30:53,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482027555] [2019-11-20 02:30:53,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 02:30:53,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:30:53,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 02:30:53,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=173, Unknown=1, NotChecked=0, Total=210 [2019-11-20 02:30:53,733 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 8 states. [2019-11-20 02:31:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:31:08,071 INFO L93 Difference]: Finished difference Result 151 states and 176 transitions. [2019-11-20 02:31:08,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 02:31:08,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2019-11-20 02:31:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:31:08,075 INFO L225 Difference]: With dead ends: 151 [2019-11-20 02:31:08,075 INFO L226 Difference]: Without dead ends: 151 [2019-11-20 02:31:08,075 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=83, Invalid=377, Unknown=2, NotChecked=0, Total=462 [2019-11-20 02:31:08,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-20 02:31:08,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 105. [2019-11-20 02:31:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-20 02:31:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2019-11-20 02:31:08,082 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 35 [2019-11-20 02:31:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:31:08,082 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2019-11-20 02:31:08,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 02:31:08,082 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2019-11-20 02:31:08,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 02:31:08,083 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:31:08,083 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:31:08,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:31:08,287 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:31:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:31:08,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1928439431, now seen corresponding path program 1 times [2019-11-20 02:31:08,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:31:08,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2039248943] [2019-11-20 02:31:08,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:31:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:31:08,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-20 02:31:08,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:31:08,587 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:31:08,587 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:31:08,595 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:31:08,598 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:31:08,599 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 02:31:08,605 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:31:08,606 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:31:08,606 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 02:31:11,011 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:31:11,011 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-20 02:31:11,012 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:31:11,036 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:31:11,040 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2019-11-20 02:31:11,041 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 02:31:11,058 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:31:11,059 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:31:11,059 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:37, output treesize:21 [2019-11-20 02:31:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:31:11,109 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:31:11,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:31:13,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:31:13,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:31:13,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:31:13,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:31:13,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:31:13,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:31:13,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:31:28,908 WARN L191 SmtUtils]: Spent 9.58 s on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2019-11-20 02:31:28,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:31:35,752 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2019-11-20 02:31:39,702 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2019-11-20 02:31:40,357 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_231|], 2=[|v_#length_186|]} [2019-11-20 02:31:40,361 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 02:31:40,362 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:31:40,363 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:31:40,363 INFO L464 ElimStorePlain]: Eliminatee |v_#length_186| vanished before elimination [2019-11-20 02:31:40,363 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:31:40,363 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:30, output treesize:1 [2019-11-20 02:31:40,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:31:40,979 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-20 02:31:40,993 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-20 02:31:40,993 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:31:41,012 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:31:41,014 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 02:31:41,014 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 02:31:41,028 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:31:41,028 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:31:41,028 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:34, output treesize:17 [2019-11-20 02:31:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:31:41,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2039248943] [2019-11-20 02:31:41,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:31:41,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 29 [2019-11-20 02:31:41,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420937895] [2019-11-20 02:31:41,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-20 02:31:41,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:31:41,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-20 02:31:41,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=772, Unknown=6, NotChecked=0, Total=870 [2019-11-20 02:31:41,204 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 30 states. [2019-11-20 02:32:33,589 WARN L191 SmtUtils]: Spent 2.67 s on a formula simplification that was a NOOP. DAG size: 56 [2019-11-20 02:32:51,577 WARN L191 SmtUtils]: Spent 10.29 s on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2019-11-20 02:33:03,985 WARN L191 SmtUtils]: Spent 10.70 s on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2019-11-20 02:33:26,912 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-11-20 02:34:25,879 WARN L191 SmtUtils]: Spent 26.09 s on a formula simplification that was a NOOP. DAG size: 53 [2019-11-20 02:34:42,817 WARN L191 SmtUtils]: Spent 6.21 s on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2019-11-20 02:34:51,885 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (bvmul c_alloc_17_~i~0 (_ bv4 32)))) (let ((.cse2 (bvadd .cse5 c_alloc_17_~array.offset (_ bv4 32))) (.cse4 (bvadd .cse5 c_alloc_17_~array.offset))) (let ((.cse1 (bvsle (_ bv0 32) .cse4)) (.cse3 (bvsle .cse4 .cse2)) (.cse0 (forall ((|v_ldv_malloc_#t~malloc12.base_34| (_ BitVec 32))) (not (= (select |c_#valid| |v_ldv_malloc_#t~malloc12.base_34|) (_ bv0 1)))))) (and (or (bvsle (_ bv0 32) |c_alloc_17_#in~array.offset|) .cse0) (or .cse1 .cse0) (forall ((|v_ldv_malloc_#t~malloc12.base_34| (_ BitVec 32)) (v_ldv_malloc_~size_42 (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ldv_malloc_#t~malloc12.base_34|) (_ bv0 1))) (bvsle (bvadd (bvmul c_alloc_17_~i~0 (_ bv4 32)) c_alloc_17_~array.offset (_ bv4 32)) (select (store |c_#length| |v_ldv_malloc_#t~malloc12.base_34| v_ldv_malloc_~size_42) c_alloc_17_~array.base)))) (bvsle .cse2 (select |c_#length| c_alloc_17_~array.base)) .cse1 .cse3 (forall ((v_prenex_13 (_ BitVec 32)) (v_ldv_malloc_~size_42 (_ BitVec 32))) (or (not (= (select |c_#valid| v_prenex_13) (_ bv0 1))) (bvsle (bvadd |c_alloc_17_#in~array.offset| (_ bv4 32)) (select (store |c_#length| v_prenex_13 v_ldv_malloc_~size_42) |c_alloc_17_#in~array.base|)))) (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#t~malloc12.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#t~malloc12.base|)) (= (store |c_old(#length)| |ldv_malloc_#t~malloc12.base| ldv_malloc_~size) |c_#length|))) (or (bvsle |c_alloc_17_#in~array.offset| (bvadd |c_alloc_17_#in~array.offset| (_ bv4 32))) (forall ((v_prenex_14 (_ BitVec 32))) (not (= (select |c_#valid| v_prenex_14) (_ bv0 1))))) (or .cse3 .cse0))))) is different from false [2019-11-20 02:35:28,152 WARN L191 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 16 [2019-11-20 02:35:37,171 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-11-20 02:35:56,624 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-11-20 02:36:23,461 WARN L191 SmtUtils]: Spent 17.47 s on a formula simplification that was a NOOP. DAG size: 129 [2019-11-20 02:36:29,896 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-11-20 02:36:54,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:54,665 INFO L93 Difference]: Finished difference Result 253 states and 297 transitions. [2019-11-20 02:36:54,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-20 02:36:54,668 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 35 [2019-11-20 02:36:54,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:54,670 INFO L225 Difference]: With dead ends: 253 [2019-11-20 02:36:54,670 INFO L226 Difference]: Without dead ends: 253 [2019-11-20 02:36:54,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 163.9s TimeCoverageRelationStatistics Valid=294, Invalid=2557, Unknown=15, NotChecked=104, Total=2970 [2019-11-20 02:36:54,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-11-20 02:36:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 179. [2019-11-20 02:36:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2019-11-20 02:36:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 235 transitions. [2019-11-20 02:36:54,691 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 235 transitions. Word has length 35 [2019-11-20 02:36:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:54,691 INFO L462 AbstractCegarLoop]: Abstraction has 179 states and 235 transitions. [2019-11-20 02:36:54,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-20 02:36:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 235 transitions. [2019-11-20 02:36:54,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 02:36:54,693 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:54,693 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:36:54,897 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:36:54,897 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:36:54,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:54,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2099434107, now seen corresponding path program 1 times [2019-11-20 02:36:54,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:36:54,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [200131531] [2019-11-20 02:36:54,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:36:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:55,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 02:36:55,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 02:36:55,138 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:36:55,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 02:36:55,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [200131531] [2019-11-20 02:36:55,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:36:55,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 02:36:55,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213493313] [2019-11-20 02:36:55,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 02:36:55,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:36:55,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 02:36:55,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:36:55,171 INFO L87 Difference]: Start difference. First operand 179 states and 235 transitions. Second operand 5 states. [2019-11-20 02:36:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:55,243 INFO L93 Difference]: Finished difference Result 179 states and 228 transitions. [2019-11-20 02:36:55,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:36:55,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2019-11-20 02:36:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:55,248 INFO L225 Difference]: With dead ends: 179 [2019-11-20 02:36:55,248 INFO L226 Difference]: Without dead ends: 179 [2019-11-20 02:36:55,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:36:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2019-11-20 02:36:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 166. [2019-11-20 02:36:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-11-20 02:36:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 210 transitions. [2019-11-20 02:36:55,259 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 210 transitions. Word has length 37 [2019-11-20 02:36:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:55,259 INFO L462 AbstractCegarLoop]: Abstraction has 166 states and 210 transitions. [2019-11-20 02:36:55,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 02:36:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 210 transitions. [2019-11-20 02:36:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 02:36:55,261 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:55,261 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:36:55,464 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:36:55,465 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:36:55,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:55,465 INFO L82 PathProgramCache]: Analyzing trace with hash -356623772, now seen corresponding path program 1 times [2019-11-20 02:36:55,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:36:55,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1803125514] [2019-11-20 02:36:55,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:36:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:55,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 02:36:55,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 02:36:55,727 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:36:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 02:36:55,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1803125514] [2019-11-20 02:36:55,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:36:55,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 02:36:55,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206463923] [2019-11-20 02:36:55,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 02:36:55,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:36:55,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:36:55,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:36:55,762 INFO L87 Difference]: Start difference. First operand 166 states and 210 transitions. Second operand 6 states. [2019-11-20 02:36:55,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:55,900 INFO L93 Difference]: Finished difference Result 170 states and 209 transitions. [2019-11-20 02:36:55,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 02:36:55,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-11-20 02:36:55,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:55,902 INFO L225 Difference]: With dead ends: 170 [2019-11-20 02:36:55,902 INFO L226 Difference]: Without dead ends: 170 [2019-11-20 02:36:55,903 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 02:36:55,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-20 02:36:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 161. [2019-11-20 02:36:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-11-20 02:36:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2019-11-20 02:36:55,912 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 37 [2019-11-20 02:36:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:55,912 INFO L462 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2019-11-20 02:36:55,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 02:36:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2019-11-20 02:36:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 02:36:55,914 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:55,914 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:36:56,115 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:36:56,115 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:36:56,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:56,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1765265242, now seen corresponding path program 1 times [2019-11-20 02:36:56,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:36:56,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1700205778] [2019-11-20 02:36:56,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/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 [2019-11-20 02:36:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 02:36:56,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-20 02:36:56,407 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:36:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-20 02:36:56,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1700205778] [2019-11-20 02:36:56,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:36:56,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 02:36:56,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813175825] [2019-11-20 02:36:56,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 02:36:56,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:36:56,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 02:36:56,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:36:56,448 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand 5 states. [2019-11-20 02:36:56,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:56,493 INFO L93 Difference]: Finished difference Result 163 states and 196 transitions. [2019-11-20 02:36:56,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 02:36:56,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-11-20 02:36:56,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:56,496 INFO L225 Difference]: With dead ends: 163 [2019-11-20 02:36:56,496 INFO L226 Difference]: Without dead ends: 163 [2019-11-20 02:36:56,496 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:36:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-11-20 02:36:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2019-11-20 02:36:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-11-20 02:36:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2019-11-20 02:36:56,504 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 38 [2019-11-20 02:36:56,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:56,504 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2019-11-20 02:36:56,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 02:36:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2019-11-20 02:36:56,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-20 02:36:56,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:56,506 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:36:56,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:36:56,711 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:36:56,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:56,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1342913081, now seen corresponding path program 2 times [2019-11-20 02:36:56,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:36:56,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1079082027] [2019-11-20 02:36:56,712 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/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 [2019-11-20 02:36:56,998 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 02:36:56,999 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:57,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 38 conjunts are in the unsatisfiable core [2019-11-20 02:36:57,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:57,081 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:36:57,081 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:36:57,093 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:36:57,098 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:36:57,098 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 02:36:57,107 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:36:57,108 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:36:57,108 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 02:36:59,807 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 02:36:59,808 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2019-11-20 02:36:59,809 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:36:59,863 INFO L567 ElimStorePlain]: treesize reduction 3, result has 92.7 percent of original size [2019-11-20 02:36:59,875 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:36:59,875 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-20 02:36:59,875 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 02:36:59,898 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:36:59,899 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:36:59,899 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:42, output treesize:21 [2019-11-20 02:36:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:59,971 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:37:00,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:37:00,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:37:00,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:37:00,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:37:00,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:37:00,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:37:00,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:37:00,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:37:00,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:37:10,365 WARN L191 SmtUtils]: Spent 5.77 s on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2019-11-20 02:37:10,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:37:15,776 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2019-11-20 02:37:23,343 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_277|], 2=[|v_#length_232|]} [2019-11-20 02:37:23,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 02:37:23,355 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:37:23,356 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:37:23,356 INFO L464 ElimStorePlain]: Eliminatee |v_#length_232| vanished before elimination [2019-11-20 02:37:23,356 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:37:23,356 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:30, output treesize:1 [2019-11-20 02:37:23,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:37:23,949 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-11-20 02:37:24,332 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-20 02:37:24,339 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-20 02:37:24,339 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:37:24,354 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:37:24,357 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 02:37:24,357 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 02:37:24,371 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:37:24,371 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:37:24,371 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:34, output treesize:17 [2019-11-20 02:37:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:37:24,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1079082027] [2019-11-20 02:37:24,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:24,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 34 [2019-11-20 02:37:24,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579416928] [2019-11-20 02:37:24,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-20 02:37:24,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:37:24,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-20 02:37:24,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1039, Unknown=6, NotChecked=0, Total=1190 [2019-11-20 02:37:24,582 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand 35 states. [2019-11-20 02:38:17,174 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ldv_malloc_~size |c_ldv_malloc_#in~size|) (= (_ bv0 32) |c_ldv_malloc_#res.offset|) (= (bvadd (select |c_#valid| |c_ldv_malloc_#res.base|) (_ bv1 1)) (_ bv0 1)) (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#t~malloc12.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#t~malloc12.base|)) (= (store |c_old(#length)| |ldv_malloc_#t~malloc12.base| ldv_malloc_~size) |c_#length|))) (= (select |c_#length| |c_ldv_malloc_#res.base|) |c_ldv_malloc_#in~size|) (forall ((v_alloc_17_~array.base_BEFORE_CALL_6 (_ BitVec 32)) (|v_ldv_malloc_#t~malloc12.base_56| (_ BitVec 32)) (v_alloc_17_~array.offset_BEFORE_CALL_4 (_ BitVec 32)) (ldv_malloc_~size (_ BitVec 32)) (v_alloc_17_~i~0_BEFORE_CALL_6 (_ BitVec 32))) (let ((.cse2 (bvmul v_alloc_17_~i~0_BEFORE_CALL_6 (_ bv4 32)))) (let ((.cse1 (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 .cse2 (_ bv4 32))) (.cse0 (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 .cse2))) (or (not (bvsle .cse0 .cse1)) (bvsle .cse1 (select (store |c_#length| |v_ldv_malloc_#t~malloc12.base_56| ldv_malloc_~size) v_alloc_17_~array.base_BEFORE_CALL_6)) (not (= (select |c_#valid| |v_ldv_malloc_#t~malloc12.base_56|) (_ bv0 1))) (exists ((v_ldv_malloc_~size_68 (_ BitVec 32)) (v_prenex_18 (_ BitVec 32))) (and (not (bvsle (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 (bvmul v_alloc_17_~i~0_BEFORE_CALL_6 (_ bv4 32)) (_ bv4 32)) (select (store |c_old(#length)| v_prenex_18 v_ldv_malloc_~size_68) v_alloc_17_~array.base_BEFORE_CALL_6))) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_18)))) (not (bvsle (_ bv0 32) .cse0)))))) (forall ((v_alloc_17_~array.base_BEFORE_CALL_6 (_ BitVec 32)) (v_alloc_17_~array.offset_BEFORE_CALL_4 (_ BitVec 32)) (v_alloc_17_~i~0_BEFORE_CALL_6 (_ BitVec 32))) (let ((.cse5 (bvmul v_alloc_17_~i~0_BEFORE_CALL_6 (_ bv4 32)))) (let ((.cse4 (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 .cse5 (_ bv4 32))) (.cse3 (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 .cse5))) (or (not (bvsle .cse3 .cse4)) (bvsle .cse4 (select |c_#length| v_alloc_17_~array.base_BEFORE_CALL_6)) (exists ((v_ldv_malloc_~size_68 (_ BitVec 32)) (v_prenex_18 (_ BitVec 32))) (and (not (bvsle (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 (bvmul v_alloc_17_~i~0_BEFORE_CALL_6 (_ bv4 32)) (_ bv4 32)) (select (store |c_old(#length)| v_prenex_18 v_ldv_malloc_~size_68) v_alloc_17_~array.base_BEFORE_CALL_6))) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_18)))) (not (bvsle (_ bv0 32) .cse3)))))) (exists ((v_prenex_17 (_ BitVec 32))) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_17)))) is different from false [2019-11-20 02:38:21,214 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 32) |c_ldv_malloc_#res.offset|) (= (bvadd (select |c_#valid| |c_ldv_malloc_#res.base|) (_ bv1 1)) (_ bv0 1)) (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#t~malloc12.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#t~malloc12.base|)) (= (store |c_old(#length)| |ldv_malloc_#t~malloc12.base| ldv_malloc_~size) |c_#length|))) (= (select |c_#length| |c_ldv_malloc_#res.base|) |c_ldv_malloc_#in~size|) (forall ((v_alloc_17_~array.base_BEFORE_CALL_6 (_ BitVec 32)) (v_alloc_17_~array.offset_BEFORE_CALL_4 (_ BitVec 32)) (v_alloc_17_~i~0_BEFORE_CALL_6 (_ BitVec 32))) (let ((.cse2 (bvmul v_alloc_17_~i~0_BEFORE_CALL_6 (_ bv4 32)))) (let ((.cse1 (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 .cse2 (_ bv4 32))) (.cse0 (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 .cse2))) (or (not (bvsle .cse0 .cse1)) (bvsle .cse1 (select |c_#length| v_alloc_17_~array.base_BEFORE_CALL_6)) (exists ((v_ldv_malloc_~size_68 (_ BitVec 32)) (v_prenex_18 (_ BitVec 32))) (and (not (bvsle (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 (bvmul v_alloc_17_~i~0_BEFORE_CALL_6 (_ bv4 32)) (_ bv4 32)) (select (store |c_old(#length)| v_prenex_18 v_ldv_malloc_~size_68) v_alloc_17_~array.base_BEFORE_CALL_6))) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_18)))) (not (bvsle (_ bv0 32) .cse0)))))) (exists ((v_prenex_17 (_ BitVec 32))) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_17)))) is different from false [2019-11-20 02:38:31,529 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-11-20 02:38:38,559 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-11-20 02:38:48,219 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-11-20 02:38:54,853 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-11-20 02:39:07,701 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#t~malloc12.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#t~malloc12.base|)) (= (store |c_old(#length)| |ldv_malloc_#t~malloc12.base| ldv_malloc_~size) |c_#length|))) (= |c_#valid| |c_old(#valid)|) (= |c_old(#length)| |c_#length|) (forall ((v_alloc_17_~array.base_BEFORE_CALL_6 (_ BitVec 32)) (v_alloc_17_~array.offset_BEFORE_CALL_4 (_ BitVec 32)) (v_alloc_17_~i~0_BEFORE_CALL_6 (_ BitVec 32))) (let ((.cse2 (bvmul v_alloc_17_~i~0_BEFORE_CALL_6 (_ bv4 32)))) (let ((.cse1 (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 .cse2 (_ bv4 32))) (.cse0 (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 .cse2))) (or (not (bvsle .cse0 .cse1)) (bvsle .cse1 (select |c_#length| v_alloc_17_~array.base_BEFORE_CALL_6)) (exists ((v_ldv_malloc_~size_68 (_ BitVec 32)) (v_prenex_18 (_ BitVec 32))) (and (not (bvsle (bvadd v_alloc_17_~array.offset_BEFORE_CALL_4 (bvmul v_alloc_17_~i~0_BEFORE_CALL_6 (_ bv4 32)) (_ bv4 32)) (select (store |c_old(#length)| v_prenex_18 v_ldv_malloc_~size_68) v_alloc_17_~array.base_BEFORE_CALL_6))) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_18)))) (not (bvsle (_ bv0 32) .cse0)))))) (exists ((v_prenex_17 (_ BitVec 32))) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_17)))) is different from false [2019-11-20 02:39:43,838 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-11-20 02:39:53,839 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-20 02:40:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:40:13,677 INFO L93 Difference]: Finished difference Result 250 states and 302 transitions. [2019-11-20 02:40:13,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-20 02:40:13,678 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 41 [2019-11-20 02:40:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:40:13,680 INFO L225 Difference]: With dead ends: 250 [2019-11-20 02:40:13,680 INFO L226 Difference]: Without dead ends: 250 [2019-11-20 02:40:13,681 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 66.9s TimeCoverageRelationStatistics Valid=379, Invalid=2807, Unknown=18, NotChecked=336, Total=3540 [2019-11-20 02:40:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-11-20 02:40:13,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 201. [2019-11-20 02:40:13,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2019-11-20 02:40:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 248 transitions. [2019-11-20 02:40:13,691 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 248 transitions. Word has length 41 [2019-11-20 02:40:13,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:40:13,692 INFO L462 AbstractCegarLoop]: Abstraction has 201 states and 248 transitions. [2019-11-20 02:40:13,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-20 02:40:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 248 transitions. [2019-11-20 02:40:13,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-20 02:40:13,693 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:40:13,693 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:40:13,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:40:13,897 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:40:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:40:13,897 INFO L82 PathProgramCache]: Analyzing trace with hash 519015482, now seen corresponding path program 2 times [2019-11-20 02:40:13,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:40:13,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1224985590] [2019-11-20 02:40:13,898 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/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 [2019-11-20 02:40:14,173 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 02:40:14,173 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:40:14,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-20 02:40:14,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:40:14,211 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:40:14,211 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:40:14,217 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:40:14,218 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:40:14,218 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 02:40:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:40:14,957 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:40:16,148 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-11-20 02:40:16,801 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-11-20 02:40:17,215 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2019-11-20 02:40:17,693 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2019-11-20 02:40:18,311 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-20 02:40:18,877 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-20 02:40:19,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:40:20,909 WARN L191 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-11-20 02:40:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:40:21,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1224985590] [2019-11-20 02:40:21,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:40:21,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2019-11-20 02:40:21,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749017944] [2019-11-20 02:40:21,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-20 02:40:21,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:40:21,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-20 02:40:21,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 02:40:21,676 INFO L87 Difference]: Start difference. First operand 201 states and 248 transitions. Second operand 34 states. [2019-11-20 02:40:24,101 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-11-20 02:40:25,259 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-20 02:40:25,795 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-20 02:40:28,355 WARN L191 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-11-20 02:40:30,173 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 98 DAG size of output: 29 [2019-11-20 02:40:32,601 WARN L191 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2019-11-20 02:40:34,814 WARN L191 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 29 [2019-11-20 02:40:37,053 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-11-20 02:40:39,105 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 28 [2019-11-20 02:40:41,286 WARN L191 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2019-11-20 02:40:42,869 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2019-11-20 02:40:44,734 WARN L191 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2019-11-20 02:40:45,871 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2019-11-20 02:40:46,795 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2019-11-20 02:40:48,607 WARN L191 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-11-20 02:40:49,303 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2019-11-20 02:40:51,073 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2019-11-20 02:40:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:40:53,634 INFO L93 Difference]: Finished difference Result 233 states and 312 transitions. [2019-11-20 02:40:53,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-20 02:40:53,637 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 40 [2019-11-20 02:40:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:40:53,639 INFO L225 Difference]: With dead ends: 233 [2019-11-20 02:40:53,639 INFO L226 Difference]: Without dead ends: 233 [2019-11-20 02:40:53,641 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=878, Invalid=2782, Unknown=0, NotChecked=0, Total=3660 [2019-11-20 02:40:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2019-11-20 02:40:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 225. [2019-11-20 02:40:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-11-20 02:40:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 280 transitions. [2019-11-20 02:40:53,652 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 280 transitions. Word has length 40 [2019-11-20 02:40:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:40:53,653 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 280 transitions. [2019-11-20 02:40:53,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-20 02:40:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 280 transitions. [2019-11-20 02:40:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-20 02:40:53,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:40:53,654 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:40:53,858 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:40:53,859 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, alloc_17Err0REQUIRES_VIOLATION, alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err1REQUIRES_VIOLATION, alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err7REQUIRES_VIOLATION, alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE, alloc_17Err2REQUIRES_VIOLATION, alloc_17Err3REQUIRES_VIOLATION, alloc_17Err8REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, free_17Err1REQUIRES_VIOLATION, free_17Err3ASSERT_VIOLATIONMEMORY_FREE, free_17Err0REQUIRES_VIOLATION, free_17Err2ASSERT_VIOLATIONMEMORY_FREE, free_17Err4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr0REQUIRES_VIOLATION, entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE, entry_pointErr1REQUIRES_VIOLATION, entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 02:40:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:40:53,859 INFO L82 PathProgramCache]: Analyzing trace with hash -725997882, now seen corresponding path program 1 times [2019-11-20 02:40:53,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:40:53,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [487083129] [2019-11-20 02:40:53,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d4ee90-c0fe-4479-94ee-b861f53c5e03/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 [2019-11-20 02:40:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:40:54,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 02:40:54,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:40:54,097 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:40:54,098 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:40:54,100 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:40:54,100 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:40:54,101 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 02:40:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:40:54,159 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:40:54,422 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:40:54,422 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 02:40:54,426 INFO L168 Benchmark]: Toolchain (without parser) took 623573.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.7 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -88.7 MB). Peak memory consumption was 132.0 MB. Max. memory is 11.5 GB. [2019-11-20 02:40:54,426 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:40:54,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -142.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-20 02:40:54,426 INFO L168 Benchmark]: Boogie Preprocessor took 116.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:40:54,427 INFO L168 Benchmark]: RCFGBuilder took 1638.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 962.3 MB in the end (delta: 124.7 MB). Peak memory consumption was 124.7 MB. Max. memory is 11.5 GB. [2019-11-20 02:40:54,427 INFO L168 Benchmark]: TraceAbstraction took 621071.08 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 85.5 MB). Free memory was 962.3 MB in the beginning and 1.0 GB in the end (delta: -71.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2019-11-20 02:40:54,428 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 744.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -142.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 116.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1638.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 962.3 MB in the end (delta: 124.7 MB). Peak memory consumption was 124.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 621071.08 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 85.5 MB). Free memory was 962.3 MB in the beginning and 1.0 GB in the end (delta: -71.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...