./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.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_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 13cc57c6782c611a2cc29fdcbf3c29309805806e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 09:50:33,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:50:33,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:50:33,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:50:33,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:50:33,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:50:33,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:50:33,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:50:33,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:50:33,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:50:33,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:50:33,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:50:33,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:50:33,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:50:33,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:50:33,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:50:33,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:50:33,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:50:33,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:50:33,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:50:33,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:50:33,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:50:33,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:50:33,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:50:33,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:50:33,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:50:33,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:50:33,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:50:33,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:50:33,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:50:33,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:50:33,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:50:33,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:50:33,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:50:33,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:50:33,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:50:33,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:50:33,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:50:33,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:50:33,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:50:33,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:50:33,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 09:50:33,829 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:50:33,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:50:33,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:50:33,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:50:33,831 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:50:33,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:50:33,832 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:50:33,832 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 09:50:33,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:50:33,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:50:33,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:50:33,833 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 09:50:33,833 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 09:50:33,833 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 09:50:33,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:50:33,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 09:50:33,834 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 09:50:33,834 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:50:33,835 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:50:33,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:50:33,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:50:33,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:50:33,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:50:33,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:50:33,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:50:33,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:50:33,836 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 09:50:33,837 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 09:50:33,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 09:50:33,837 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_7c48345b-3efe-449d-868e-ba4cc3053852/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 -> 13cc57c6782c611a2cc29fdcbf3c29309805806e [2019-11-20 09:50:34,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:50:34,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:50:34,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:50:34,033 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:50:34,034 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:50:34,035 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2019-11-20 09:50:34,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/data/4d56be31e/fdba5760204b4697978d75a037133f2c/FLAG451fe6899 [2019-11-20 09:50:34,706 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:50:34,707 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2019-11-20 09:50:34,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/data/4d56be31e/fdba5760204b4697978d75a037133f2c/FLAG451fe6899 [2019-11-20 09:50:34,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/data/4d56be31e/fdba5760204b4697978d75a037133f2c [2019-11-20 09:50:34,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:50:34,902 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 09:50:34,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:50:34,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:50:34,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:50:34,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:50:34" (1/1) ... [2019-11-20 09:50:34,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b281db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:34, skipping insertion in model container [2019-11-20 09:50:34,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:50:34" (1/1) ... [2019-11-20 09:50:34,919 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:50:34,989 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:50:35,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:50:35,660 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:50:35,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:50:35,827 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:50:35,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:35 WrapperNode [2019-11-20 09:50:35,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:50:35,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:50:35,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:50:35,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:50:35,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:35" (1/1) ... [2019-11-20 09:50:35,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:35" (1/1) ... [2019-11-20 09:50:35,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:35" (1/1) ... [2019-11-20 09:50:35,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:35" (1/1) ... [2019-11-20 09:50:35,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:35" (1/1) ... [2019-11-20 09:50:35,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:35" (1/1) ... [2019-11-20 09:50:35,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:35" (1/1) ... [2019-11-20 09:50:35,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:50:35,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:50:35,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:50:35,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:50:35,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:50:36,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 09:50:36,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:50:36,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 09:50:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 09:50:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 09:50:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 09:50:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 09:50:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 09:50:36,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-20 09:50:36,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-20 09:50:36,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-20 09:50:36,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-20 09:50:36,017 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-20 09:50:36,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-20 09:50:36,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-20 09:50:36,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-20 09:50:36,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-20 09:50:36,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-20 09:50:36,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-20 09:50:36,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-20 09:50:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-20 09:50:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-20 09:50:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-20 09:50:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-20 09:50:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-20 09:50:36,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-20 09:50:36,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-20 09:50:36,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-20 09:50:36,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-20 09:50:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-20 09:50:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-20 09:50:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-20 09:50:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-20 09:50:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-20 09:50:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-20 09:50:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-20 09:50:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-20 09:50:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-20 09:50:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-20 09:50:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-20 09:50:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-20 09:50:36,023 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2019-11-20 09:50:36,023 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-20 09:50:36,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 09:50:36,023 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-20 09:50:36,023 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-20 09:50:36,023 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-20 09:50:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 09:50:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 09:50:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 09:50:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 09:50:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 09:50:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 09:50:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 09:50:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 09:50:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 09:50:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 09:50:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 09:50:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 09:50:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 09:50:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 09:50:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 09:50:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 09:50:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 09:50:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 09:50:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 09:50:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 09:50:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 09:50:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 09:50:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 09:50:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 09:50:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 09:50:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 09:50:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 09:50:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 09:50:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 09:50:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 09:50:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 09:50:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 09:50:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 09:50:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 09:50:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 09:50:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 09:50:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 09:50:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 09:50:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 09:50:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 09:50:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 09:50:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 09:50:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 09:50:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 09:50:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 09:50:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 09:50:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 09:50:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 09:50:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 09:50:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 09:50:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 09:50:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 09:50:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 09:50:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 09:50:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 09:50:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 09:50:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 09:50:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 09:50:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 09:50:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 09:50:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 09:50:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 09:50:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 09:50:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 09:50:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 09:50:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 09:50:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 09:50:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 09:50:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 09:50:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 09:50:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 09:50:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 09:50:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 09:50:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 09:50:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 09:50:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 09:50:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 09:50:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 09:50:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 09:50:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 09:50:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 09:50:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 09:50:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 09:50:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 09:50:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 09:50:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 09:50:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 09:50:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 09:50:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 09:50:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 09:50:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 09:50:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 09:50:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 09:50:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 09:50:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 09:50:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 09:50:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 09:50:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 09:50:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 09:50:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 09:50:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 09:50:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 09:50:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 09:50:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 09:50:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 09:50:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 09:50:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 09:50:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-20 09:50:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 09:50:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-20 09:50:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-20 09:50:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-20 09:50:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-20 09:50:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-20 09:50:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-20 09:50:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 09:50:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-20 09:50:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-20 09:50:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-20 09:50:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 09:50:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-20 09:50:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-20 09:50:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-20 09:50:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 09:50:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-20 09:50:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-20 09:50:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-20 09:50:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-20 09:50:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-20 09:50:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-20 09:50:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:50:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-20 09:50:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-20 09:50:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-20 09:50:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-20 09:50:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-20 09:50:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 09:50:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 09:50:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-20 09:50:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-20 09:50:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 09:50:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-20 09:50:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-20 09:50:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-20 09:50:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-20 09:50:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-20 09:50:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-20 09:50:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-20 09:50:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-20 09:50:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-20 09:50:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-20 09:50:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-20 09:50:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-20 09:50:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-20 09:50:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-20 09:50:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2019-11-20 09:50:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-20 09:50:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 09:50:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 09:50:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 09:50:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 09:50:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:50:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-20 09:50:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-20 09:50:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-20 09:50:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-20 09:50:36,730 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 09:50:37,212 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 09:50:37,816 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:50:37,816 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 09:50:37,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:50:37 BoogieIcfgContainer [2019-11-20 09:50:37,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:50:37,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:50:37,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:50:37,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:50:37,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:50:34" (1/3) ... [2019-11-20 09:50:37,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f819c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:50:37, skipping insertion in model container [2019-11-20 09:50:37,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:35" (2/3) ... [2019-11-20 09:50:37,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f819c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:50:37, skipping insertion in model container [2019-11-20 09:50:37,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:50:37" (3/3) ... [2019-11-20 09:50:37,827 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test17_3.i [2019-11-20 09:50:37,838 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:50:37,848 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 85 error locations. [2019-11-20 09:50:37,860 INFO L249 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2019-11-20 09:50:37,882 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:50:37,883 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 09:50:37,883 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:50:37,883 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:50:37,883 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:50:37,884 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:50:37,884 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:50:37,884 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:50:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2019-11-20 09:50:37,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 09:50:37,922 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:50:37,923 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:50:37,924 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, 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 09:50:37,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:50:37,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2012889847, now seen corresponding path program 1 times [2019-11-20 09:50:37,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:50:37,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [556563487] [2019-11-20 09:50:37,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:50:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:50:38,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 09:50:38,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:50:38,399 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 09:50:38,400 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:50:38,408 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:50:38,409 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:50:38,409 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 09:50:38,466 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 09:50:38,469 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:50:38,551 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 09:50:38,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [556563487] [2019-11-20 09:50:38,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:50:38,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 09:50:38,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458110096] [2019-11-20 09:50:38,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 09:50:38,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:50:38,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 09:50:38,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:50:38,582 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 5 states. [2019-11-20 09:50:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:50:38,887 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2019-11-20 09:50:38,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 09:50:38,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-20 09:50:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:50:38,907 INFO L225 Difference]: With dead ends: 72 [2019-11-20 09:50:38,908 INFO L226 Difference]: Without dead ends: 69 [2019-11-20 09:50:38,909 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 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 09:50:38,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-20 09:50:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2019-11-20 09:50:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-20 09:50:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2019-11-20 09:50:38,992 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 16 [2019-11-20 09:50:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:50:38,993 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2019-11-20 09:50:38,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 09:50:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2019-11-20 09:50:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 09:50:38,995 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:50:38,995 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:50:39,199 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:50:39,200 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, 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 09:50:39,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:50:39,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2012889848, now seen corresponding path program 1 times [2019-11-20 09:50:39,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:50:39,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1638327429] [2019-11-20 09:50:39,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:50:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:50:39,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 09:50:39,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:50:39,611 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 09:50:39,611 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:50:39,619 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:50:39,620 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:50:39,620 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 09:50:39,723 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 09:50:39,723 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:50:40,799 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 09:50:40,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1638327429] [2019-11-20 09:50:40,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:50:40,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2019-11-20 09:50:40,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644398106] [2019-11-20 09:50:40,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 09:50:40,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:50:40,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 09:50:40,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-20 09:50:40,803 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 14 states. [2019-11-20 09:50:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:50:42,001 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2019-11-20 09:50:42,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 09:50:42,002 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2019-11-20 09:50:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:50:42,004 INFO L225 Difference]: With dead ends: 78 [2019-11-20 09:50:42,004 INFO L226 Difference]: Without dead ends: 78 [2019-11-20 09:50:42,005 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2019-11-20 09:50:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-20 09:50:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2019-11-20 09:50:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-20 09:50:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2019-11-20 09:50:42,018 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 16 [2019-11-20 09:50:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:50:42,019 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2019-11-20 09:50:42,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 09:50:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2019-11-20 09:50:42,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 09:50:42,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:50:42,021 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:50:42,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:50:42,229 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, 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 09:50:42,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:50:42,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1394573768, now seen corresponding path program 1 times [2019-11-20 09:50:42,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:50:42,230 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [707122403] [2019-11-20 09:50:42,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:50:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:50:42,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 09:50:42,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:50:42,541 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 09:50:42,541 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:50:42,609 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 09:50:42,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [707122403] [2019-11-20 09:50:42,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:50:42,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 09:50:42,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717994892] [2019-11-20 09:50:42,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 09:50:42,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:50:42,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 09:50:42,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:50:42,612 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand 5 states. [2019-11-20 09:50:42,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:50:42,667 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2019-11-20 09:50:42,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 09:50:42,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-20 09:50:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:50:42,669 INFO L225 Difference]: With dead ends: 69 [2019-11-20 09:50:42,669 INFO L226 Difference]: Without dead ends: 69 [2019-11-20 09:50:42,670 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 09:50:42,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-20 09:50:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2019-11-20 09:50:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-20 09:50:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2019-11-20 09:50:42,680 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 16 [2019-11-20 09:50:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:50:42,680 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2019-11-20 09:50:42,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 09:50:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2019-11-20 09:50:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 09:50:42,681 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:50:42,682 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:50:42,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:50:42,885 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, 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 09:50:42,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:50:42,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2024128132, now seen corresponding path program 1 times [2019-11-20 09:50:42,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:50:42,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [279060761] [2019-11-20 09:50:42,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:50:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:50:43,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 09:50:43,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:50:43,145 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 09:50:43,145 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:50:43,245 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 09:50:43,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [279060761] [2019-11-20 09:50:43,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:50:43,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 09:50:43,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10017127] [2019-11-20 09:50:43,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 09:50:43,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:50:43,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 09:50:43,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:50:43,247 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 5 states. [2019-11-20 09:50:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:50:43,332 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2019-11-20 09:50:43,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 09:50:43,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-20 09:50:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:50:43,334 INFO L225 Difference]: With dead ends: 69 [2019-11-20 09:50:43,334 INFO L226 Difference]: Without dead ends: 69 [2019-11-20 09:50:43,335 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:50:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-20 09:50:43,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2019-11-20 09:50:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-20 09:50:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2019-11-20 09:50:43,344 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 17 [2019-11-20 09:50:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:50:43,344 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2019-11-20 09:50:43,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 09:50:43,345 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2019-11-20 09:50:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 09:50:43,346 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:50:43,346 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:50:43,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:50:43,557 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, 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 09:50:43,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:50:43,558 INFO L82 PathProgramCache]: Analyzing trace with hash -281317797, now seen corresponding path program 1 times [2019-11-20 09:50:43,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:50:43,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1384960083] [2019-11-20 09:50:43,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:50:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:50:43,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 09:50:43,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:50:43,794 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 09:50:43,795 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:50:43,843 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 09:50:43,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1384960083] [2019-11-20 09:50:43,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:50:43,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 09:50:43,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476482357] [2019-11-20 09:50:43,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 09:50:43,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:50:43,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 09:50:43,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 09:50:43,845 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 3 states. [2019-11-20 09:50:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:50:43,977 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2019-11-20 09:50:43,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 09:50:43,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-20 09:50:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:50:43,979 INFO L225 Difference]: With dead ends: 93 [2019-11-20 09:50:43,979 INFO L226 Difference]: Without dead ends: 88 [2019-11-20 09:50:43,980 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 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 09:50:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-20 09:50:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 65. [2019-11-20 09:50:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-20 09:50:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2019-11-20 09:50:43,988 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 17 [2019-11-20 09:50:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:50:43,988 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2019-11-20 09:50:43,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 09:50:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2019-11-20 09:50:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 09:50:43,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:50:43,990 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:50:44,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:50:44,193 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, 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 09:50:44,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:50:44,193 INFO L82 PathProgramCache]: Analyzing trace with hash 189970936, now seen corresponding path program 1 times [2019-11-20 09:50:44,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:50:44,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1992973958] [2019-11-20 09:50:44,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:50:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:50:44,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 09:50:44,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:50:44,508 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 09:50:44,508 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:50:44,524 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:50:44,525 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:50:44,525 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 09:50:44,735 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 09:50:44,736 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:50:45,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:50:46,823 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-11-20 09:50:47,230 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 09:50:47,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1992973958] [2019-11-20 09:50:47,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:50:47,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2019-11-20 09:50:47,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696207304] [2019-11-20 09:50:47,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-20 09:50:47,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:50:47,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-20 09:50:47,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-20 09:50:47,233 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 19 states. [2019-11-20 09:50:49,004 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-20 09:50:49,522 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-11-20 09:50:50,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:50:50,449 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2019-11-20 09:50:50,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 09:50:50,451 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2019-11-20 09:50:50,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:50:50,452 INFO L225 Difference]: With dead ends: 82 [2019-11-20 09:50:50,452 INFO L226 Difference]: Without dead ends: 82 [2019-11-20 09:50:50,453 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2019-11-20 09:50:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-20 09:50:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2019-11-20 09:50:50,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-20 09:50:50,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2019-11-20 09:50:50,461 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 22 [2019-11-20 09:50:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:50:50,461 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2019-11-20 09:50:50,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-20 09:50:50,462 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2019-11-20 09:50:50,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 09:50:50,463 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:50:50,463 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:50:50,670 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:50:50,671 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, 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 09:50:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:50:50,671 INFO L82 PathProgramCache]: Analyzing trace with hash 676551503, now seen corresponding path program 1 times [2019-11-20 09:50:50,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:50:50,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [955750116] [2019-11-20 09:50:50,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:50:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:50:50,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 09:50:50,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:50:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 09:50:50,915 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:50:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 09:50:50,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [955750116] [2019-11-20 09:50:50,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:50:50,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 09:50:50,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635224075] [2019-11-20 09:50:50,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 09:50:50,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:50:50,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 09:50:50,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:50:50,963 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 5 states. [2019-11-20 09:50:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:50:50,999 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2019-11-20 09:50:51,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 09:50:51,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-20 09:50:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:50:51,002 INFO L225 Difference]: With dead ends: 76 [2019-11-20 09:50:51,002 INFO L226 Difference]: Without dead ends: 76 [2019-11-20 09:50:51,003 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 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 09:50:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-20 09:50:51,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-11-20 09:50:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-20 09:50:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2019-11-20 09:50:51,010 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 32 [2019-11-20 09:50:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:50:51,011 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2019-11-20 09:50:51,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 09:50:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2019-11-20 09:50:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 09:50:51,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:50:51,013 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:50:51,216 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:50:51,217 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, 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 09:50:51,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:50:51,217 INFO L82 PathProgramCache]: Analyzing trace with hash -501739445, now seen corresponding path program 1 times [2019-11-20 09:50:51,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:50:51,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [203896326] [2019-11-20 09:50:51,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:50:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:50:51,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 09:50:51,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:50:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:50:51,630 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:50:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:50:51,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [203896326] [2019-11-20 09:50:51,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:50:51,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-20 09:50:51,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056034597] [2019-11-20 09:50:51,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 09:50:51,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:50:51,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 09:50:51,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-20 09:50:51,794 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 12 states. [2019-11-20 09:50:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:50:52,241 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2019-11-20 09:50:52,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 09:50:52,242 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2019-11-20 09:50:52,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:50:52,243 INFO L225 Difference]: With dead ends: 82 [2019-11-20 09:50:52,243 INFO L226 Difference]: Without dead ends: 82 [2019-11-20 09:50:52,244 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2019-11-20 09:50:52,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-20 09:50:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2019-11-20 09:50:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-20 09:50:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2019-11-20 09:50:52,252 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 33 [2019-11-20 09:50:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:50:52,253 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2019-11-20 09:50:52,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 09:50:52,253 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2019-11-20 09:50:52,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 09:50:52,255 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:50:52,255 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:50:52,458 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:50:52,459 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, 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 09:50:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:50:52,459 INFO L82 PathProgramCache]: Analyzing trace with hash -107747336, now seen corresponding path program 2 times [2019-11-20 09:50:52,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:50:52,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2125422386] [2019-11-20 09:50:52,460 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:50:52,798 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 09:50:52,798 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:50:52,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 09:50:52,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:50:52,834 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 09:50:52,835 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:50:52,843 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:50:52,843 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:50:52,844 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 09:50:53,105 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 09:50:53,105 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:50:55,877 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 09:50:55,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2125422386] [2019-11-20 09:50:55,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:50:55,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2019-11-20 09:50:55,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862016415] [2019-11-20 09:50:55,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-20 09:50:55,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:50:55,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-20 09:50:55,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2019-11-20 09:50:55,880 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 26 states. [2019-11-20 09:50:58,487 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-11-20 09:50:59,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:50:59,529 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2019-11-20 09:50:59,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-20 09:50:59,530 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 34 [2019-11-20 09:50:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:50:59,532 INFO L225 Difference]: With dead ends: 92 [2019-11-20 09:50:59,532 INFO L226 Difference]: Without dead ends: 92 [2019-11-20 09:50:59,533 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=291, Invalid=1349, Unknown=0, NotChecked=0, Total=1640 [2019-11-20 09:50:59,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-20 09:50:59,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2019-11-20 09:50:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-20 09:50:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2019-11-20 09:50:59,540 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 34 [2019-11-20 09:50:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:50:59,540 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2019-11-20 09:50:59,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-20 09:50:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2019-11-20 09:50:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-20 09:50:59,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:50:59,542 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:50:59,747 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:50:59,747 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, 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 09:50:59,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:50:59,748 INFO L82 PathProgramCache]: Analyzing trace with hash 427824632, now seen corresponding path program 3 times [2019-11-20 09:50:59,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:50:59,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1888796098] [2019-11-20 09:50:59,748 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:51:00,449 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-11-20 09:51:00,449 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:51:00,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-20 09:51:00,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:51:00,471 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 09:51:00,471 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:51:00,477 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:51:00,477 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:51:00,478 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 09:51:01,485 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 17 treesize of output 13 [2019-11-20 09:51:01,486 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:51:01,509 INFO L567 ElimStorePlain]: treesize reduction 23, result has 28.1 percent of original size [2019-11-20 09:51:01,509 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:51:01,510 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:9 [2019-11-20 09:51:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:51:01,568 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:51:02,719 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2019-11-20 09:51:04,855 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-11-20 09:51:05,892 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-11-20 09:51:09,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:51:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 18 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:51:09,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1888796098] [2019-11-20 09:51:09,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:51:09,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25] total 42 [2019-11-20 09:51:09,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760898054] [2019-11-20 09:51:09,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-20 09:51:09,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:51:09,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-20 09:51:09,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1438, Unknown=0, NotChecked=0, Total=1722 [2019-11-20 09:51:09,749 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 42 states. [2019-11-20 09:51:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:51:13,913 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2019-11-20 09:51:13,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-20 09:51:13,914 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 46 [2019-11-20 09:51:13,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:51:13,915 INFO L225 Difference]: With dead ends: 88 [2019-11-20 09:51:13,915 INFO L226 Difference]: Without dead ends: 88 [2019-11-20 09:51:13,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=328, Invalid=1742, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 09:51:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-20 09:51:13,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2019-11-20 09:51:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-20 09:51:13,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2019-11-20 09:51:13,922 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 46 [2019-11-20 09:51:13,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:51:13,922 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2019-11-20 09:51:13,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-20 09:51:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2019-11-20 09:51:13,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-20 09:51:13,924 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:51:13,924 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 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 09:51:14,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:51:14,125 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, 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 09:51:14,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:51:14,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2062874979, now seen corresponding path program 2 times [2019-11-20 09:51:14,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:51:14,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2059807560] [2019-11-20 09:51:14,126 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:51:14,373 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 09:51:14,373 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:51:14,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 09:51:14,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:51:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-20 09:51:14,416 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:51:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-20 09:51:14,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2059807560] [2019-11-20 09:51:14,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:51:14,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-20 09:51:14,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005043982] [2019-11-20 09:51:14,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 09:51:14,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:51:14,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 09:51:14,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-20 09:51:14,483 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 7 states. [2019-11-20 09:51:14,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:51:14,589 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2019-11-20 09:51:14,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 09:51:14,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2019-11-20 09:51:14,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:51:14,592 INFO L225 Difference]: With dead ends: 117 [2019-11-20 09:51:14,592 INFO L226 Difference]: Without dead ends: 114 [2019-11-20 09:51:14,592 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 09:51:14,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-20 09:51:14,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87. [2019-11-20 09:51:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-20 09:51:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2019-11-20 09:51:14,598 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 54 [2019-11-20 09:51:14,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:51:14,599 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2019-11-20 09:51:14,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 09:51:14,599 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2019-11-20 09:51:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-20 09:51:14,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:51:14,600 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:51:14,801 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:51:14,801 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, 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 09:51:14,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:51:14,802 INFO L82 PathProgramCache]: Analyzing trace with hash -465490005, now seen corresponding path program 1 times [2019-11-20 09:51:14,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:51:14,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1434252093] [2019-11-20 09:51:14,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:51:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:51:15,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 09:51:15,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:51:15,220 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 09:51:15,221 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:51:15,223 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:51:15,223 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:51:15,223 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 09:51:15,369 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:51:15,369 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 09:51:15,370 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:51:15,403 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-20 09:51:15,403 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 09:51:15,404 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2019-11-20 09:51:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-20 09:51:15,450 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:51:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-11-20 09:51:19,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1434252093] [2019-11-20 09:51:19,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 09:51:19,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-11-20 09:51:19,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032413399] [2019-11-20 09:51:19,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 09:51:19,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:51:19,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 09:51:19,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=173, Unknown=1, NotChecked=0, Total=210 [2019-11-20 09:51:19,869 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 8 states. [2019-11-20 09:51:35,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:51:35,384 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2019-11-20 09:51:35,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 09:51:35,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2019-11-20 09:51:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:51:35,386 INFO L225 Difference]: With dead ends: 135 [2019-11-20 09:51:35,386 INFO L226 Difference]: Without dead ends: 135 [2019-11-20 09:51:35,387 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=95, Invalid=408, Unknown=3, NotChecked=0, Total=506 [2019-11-20 09:51:35,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-11-20 09:51:35,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2019-11-20 09:51:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-11-20 09:51:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2019-11-20 09:51:35,392 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 56 [2019-11-20 09:51:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:51:35,393 INFO L462 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2019-11-20 09:51:35,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 09:51:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2019-11-20 09:51:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-20 09:51:35,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:51:35,395 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:51:35,595 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:51:35,596 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, 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 09:51:35,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:51:35,596 INFO L82 PathProgramCache]: Analyzing trace with hash -465490004, now seen corresponding path program 1 times [2019-11-20 09:51:35,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:51:35,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1779213590] [2019-11-20 09:51:35,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:51:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:51:36,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-20 09:51:36,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:51:36,102 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 09:51:36,102 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:51:36,111 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:51:36,115 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 09:51:36,115 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:51:36,123 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:51:36,123 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:51:36,123 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 09:51:38,349 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:51:38,350 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 09:51:38,351 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:51:38,367 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:51:38,386 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:51:38,387 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 09:51:38,387 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:51:38,401 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:51:38,402 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:51:38,402 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:12 [2019-11-20 09:51:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-20 09:51:38,447 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:51:38,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:51:39,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:51:39,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:51:39,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:51:39,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:51:39,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:51:39,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:51:39,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:51:50,279 WARN L191 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2019-11-20 09:51:50,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:51:58,869 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2019-11-20 09:52:08,003 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_260|], 2=[|v_#length_226|]} [2019-11-20 09:52:08,013 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 09:52:08,014 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:52:08,023 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:52:08,024 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:52:08,025 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:52:08,033 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:52:08,034 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 09:52:08,034 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:23, output treesize:5 [2019-11-20 09:52:08,740 INFO L392 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2019-11-20 09:52:08,771 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 09:52:08,771 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:52:08,806 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:52:08,810 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:52:08,811 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:52:08,830 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:52:08,831 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 09:52:08,831 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:33, output treesize:16 [2019-11-20 09:52:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-20 09:52:09,050 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1779213590] [2019-11-20 09:52:09,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:52:09,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2019-11-20 09:52:09,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247538081] [2019-11-20 09:52:09,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 09:52:09,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:52:09,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 09:52:09,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=405, Unknown=4, NotChecked=0, Total=462 [2019-11-20 09:52:09,054 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 22 states. [2019-11-20 09:52:36,085 WARN L191 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 56 [2019-11-20 09:52:57,995 WARN L191 SmtUtils]: Spent 8.20 s on a formula simplification that was a NOOP. DAG size: 59 [2019-11-20 09:53:07,359 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-11-20 09:53:14,604 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-11-20 09:53:35,002 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2019-11-20 09:53:46,058 WARN L191 SmtUtils]: Spent 7.63 s on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-11-20 09:53:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:53:56,366 INFO L93 Difference]: Finished difference Result 265 states and 310 transitions. [2019-11-20 09:53:56,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 09:53:56,368 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2019-11-20 09:53:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:53:56,370 INFO L225 Difference]: With dead ends: 265 [2019-11-20 09:53:56,370 INFO L226 Difference]: Without dead ends: 265 [2019-11-20 09:53:56,371 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 81.0s TimeCoverageRelationStatistics Valid=169, Invalid=942, Unknown=11, NotChecked=0, Total=1122 [2019-11-20 09:53:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-11-20 09:53:56,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 133. [2019-11-20 09:53:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-11-20 09:53:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2019-11-20 09:53:56,392 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 56 [2019-11-20 09:53:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:53:56,393 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2019-11-20 09:53:56,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 09:53:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2019-11-20 09:53:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-20 09:53:56,395 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:53:56,395 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2019-11-20 09:53:56,597 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:53:56,598 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, 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 09:53:56,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:53:56,598 INFO L82 PathProgramCache]: Analyzing trace with hash -659340552, now seen corresponding path program 1 times [2019-11-20 09:53:56,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:53:56,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1294006150] [2019-11-20 09:53:56,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:53:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:53:56,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 09:53:56,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:53:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-20 09:53:56,901 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:53:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-20 09:53:56,948 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1294006150] [2019-11-20 09:53:56,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:53:56,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 09:53:56,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064097177] [2019-11-20 09:53:56,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 09:53:56,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:53:56,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 09:53:56,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:53:56,950 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand 5 states. [2019-11-20 09:53:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:53:57,016 INFO L93 Difference]: Finished difference Result 156 states and 189 transitions. [2019-11-20 09:53:57,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 09:53:57,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2019-11-20 09:53:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:53:57,018 INFO L225 Difference]: With dead ends: 156 [2019-11-20 09:53:57,018 INFO L226 Difference]: Without dead ends: 156 [2019-11-20 09:53:57,018 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 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 09:53:57,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-20 09:53:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 137. [2019-11-20 09:53:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-11-20 09:53:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 165 transitions. [2019-11-20 09:53:57,026 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 165 transitions. Word has length 58 [2019-11-20 09:53:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:53:57,026 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 165 transitions. [2019-11-20 09:53:57,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 09:53:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 165 transitions. [2019-11-20 09:53:57,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-20 09:53:57,027 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:53:57,028 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2019-11-20 09:53:57,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:53:57,228 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, 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 09:53:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:53:57,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1083469783, now seen corresponding path program 1 times [2019-11-20 09:53:57,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:53:57,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [228780589] [2019-11-20 09:53:57,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/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 09:53:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:53:57,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 09:53:57,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:53:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-20 09:53:57,631 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:53:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-20 09:53:57,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [228780589] [2019-11-20 09:53:57,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:53:57,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 09:53:57,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483111380] [2019-11-20 09:53:57,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 09:53:57,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:53:57,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 09:53:57,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 09:53:57,673 INFO L87 Difference]: Start difference. First operand 137 states and 165 transitions. Second operand 6 states. [2019-11-20 09:53:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:53:57,826 INFO L93 Difference]: Finished difference Result 146 states and 174 transitions. [2019-11-20 09:53:57,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 09:53:57,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2019-11-20 09:53:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:53:57,828 INFO L225 Difference]: With dead ends: 146 [2019-11-20 09:53:57,829 INFO L226 Difference]: Without dead ends: 146 [2019-11-20 09:53:57,829 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 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 09:53:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-20 09:53:57,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 139. [2019-11-20 09:53:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-11-20 09:53:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 167 transitions. [2019-11-20 09:53:57,834 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 167 transitions. Word has length 58 [2019-11-20 09:53:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:53:57,835 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 167 transitions. [2019-11-20 09:53:57,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 09:53:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 167 transitions. [2019-11-20 09:53:57,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-20 09:53:57,837 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:53:57,837 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 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 09:53:58,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:53:58,042 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, 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, 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 09:53:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:53:58,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1826501826, now seen corresponding path program 1 times [2019-11-20 09:53:58,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:53:58,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [928749996] [2019-11-20 09:53:58,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:53:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:53:58,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 09:53:58,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:53:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-20 09:53:58,588 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:53:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-20 09:53:58,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [928749996] [2019-11-20 09:53:58,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:53:58,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2019-11-20 09:53:58,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003751779] [2019-11-20 09:53:58,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 09:53:58,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:53:58,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 09:53:58,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 09:53:58,682 INFO L87 Difference]: Start difference. First operand 139 states and 167 transitions. Second operand 9 states. [2019-11-20 09:53:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:53:58,857 INFO L93 Difference]: Finished difference Result 138 states and 165 transitions. [2019-11-20 09:53:58,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 09:53:58,858 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2019-11-20 09:53:58,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:53:58,859 INFO L225 Difference]: With dead ends: 138 [2019-11-20 09:53:58,859 INFO L226 Difference]: Without dead ends: 138 [2019-11-20 09:53:58,859 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 09:53:58,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-11-20 09:53:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2019-11-20 09:53:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-20 09:53:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 165 transitions. [2019-11-20 09:53:58,865 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 165 transitions. Word has length 63 [2019-11-20 09:53:58,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:53:58,866 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 165 transitions. [2019-11-20 09:53:58,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 09:53:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 165 transitions. [2019-11-20 09:53:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-20 09:53:58,867 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:53:58,867 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 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 09:53:59,072 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:53:59,072 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, 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, 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 09:53:59,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:53:59,072 INFO L82 PathProgramCache]: Analyzing trace with hash -2039074825, now seen corresponding path program 1 times [2019-11-20 09:53:59,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:53:59,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [380161069] [2019-11-20 09:53:59,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:53:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:53:59,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 09:53:59,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:53:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-20 09:53:59,516 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:53:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-11-20 09:53:59,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380161069] [2019-11-20 09:53:59,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:53:59,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-20 09:53:59,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546674303] [2019-11-20 09:53:59,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 09:53:59,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:53:59,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 09:53:59,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 09:53:59,642 INFO L87 Difference]: Start difference. First operand 138 states and 165 transitions. Second operand 9 states. [2019-11-20 09:53:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:53:59,847 INFO L93 Difference]: Finished difference Result 172 states and 198 transitions. [2019-11-20 09:53:59,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 09:53:59,849 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2019-11-20 09:53:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:53:59,850 INFO L225 Difference]: With dead ends: 172 [2019-11-20 09:53:59,850 INFO L226 Difference]: Without dead ends: 166 [2019-11-20 09:53:59,851 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-20 09:53:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-11-20 09:53:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2019-11-20 09:53:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-20 09:53:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2019-11-20 09:53:59,864 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 65 [2019-11-20 09:53:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:53:59,865 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2019-11-20 09:53:59,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 09:53:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2019-11-20 09:53:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 09:53:59,866 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:53:59,866 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:54:00,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:54:00,071 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, 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, 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 09:54:00,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:54:00,072 INFO L82 PathProgramCache]: Analyzing trace with hash 404669401, now seen corresponding path program 1 times [2019-11-20 09:54:00,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:54:00,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [161520075] [2019-11-20 09:54:00,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:54:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:54:00,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 09:54:00,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:54:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-20 09:54:00,665 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:54:00,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:54:01,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:54:01,432 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 24 treesize of output 22 [2019-11-20 09:54:01,432 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:54:01,446 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 19 treesize of output 17 [2019-11-20 09:54:01,446 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:54:01,490 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:54:01,491 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-11-20 09:54:01,491 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:40 [2019-11-20 09:54:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-20 09:54:02,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [161520075] [2019-11-20 09:54:02,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:54:02,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2019-11-20 09:54:02,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650646957] [2019-11-20 09:54:02,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-20 09:54:02,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:54:02,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-20 09:54:02,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2019-11-20 09:54:02,197 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 20 states. [2019-11-20 09:54:04,673 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2019-11-20 09:54:04,983 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2019-11-20 09:54:06,504 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-20 09:54:06,853 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2019-11-20 09:54:07,491 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2019-11-20 09:54:07,822 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2019-11-20 09:54:08,427 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2019-11-20 09:54:09,897 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-20 09:54:10,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:54:10,223 INFO L93 Difference]: Finished difference Result 305 states and 348 transitions. [2019-11-20 09:54:10,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-20 09:54:10,225 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2019-11-20 09:54:10,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:54:10,228 INFO L225 Difference]: With dead ends: 305 [2019-11-20 09:54:10,228 INFO L226 Difference]: Without dead ends: 305 [2019-11-20 09:54:10,229 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=371, Invalid=1699, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 09:54:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2019-11-20 09:54:10,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 137. [2019-11-20 09:54:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-11-20 09:54:10,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-11-20 09:54:10,237 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 68 [2019-11-20 09:54:10,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:54:10,237 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-11-20 09:54:10,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-20 09:54:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-11-20 09:54:10,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-20 09:54:10,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:54:10,239 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 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 09:54:10,444 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:54:10,444 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, 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, 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 09:54:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:54:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1266589644, now seen corresponding path program 1 times [2019-11-20 09:54:10,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:54:10,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [35135899] [2019-11-20 09:54:10,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48345b-3efe-449d-868e-ba4cc3053852/bin/uautomizer/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:54:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:54:10,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 09:54:10,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:54:10,939 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:54:10,939 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 1 case distinctions, treesize of input 24 treesize of output 37 [2019-11-20 09:54:10,940 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:54:10,956 INFO L567 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2019-11-20 09:54:10,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:54:10,957 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 09:54:10,957 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2019-11-20 09:54:10,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:54:10,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:54:10,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:54:10,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:54:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-20 09:54:17,216 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:54:21,472 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-20 09:54:21,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:54:21,680 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 09:54:21,682 INFO L168 Benchmark]: Toolchain (without parser) took 226780.88 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 239.1 MB). Free memory was 946.2 MB in the beginning and 902.2 MB in the end (delta: 44.0 MB). Peak memory consumption was 283.1 MB. Max. memory is 11.5 GB. [2019-11-20 09:54:21,683 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:54:21,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 925.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 09:54:21,683 INFO L168 Benchmark]: Boogie Preprocessor took 108.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:54:21,683 INFO L168 Benchmark]: RCFGBuilder took 1879.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 981.8 MB in the end (delta: 114.6 MB). Peak memory consumption was 114.6 MB. Max. memory is 11.5 GB. [2019-11-20 09:54:21,684 INFO L168 Benchmark]: TraceAbstraction took 223862.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 101.2 MB). Free memory was 981.8 MB in the beginning and 902.2 MB in the end (delta: 79.6 MB). Peak memory consumption was 180.8 MB. Max. memory is 11.5 GB. [2019-11-20 09:54:21,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 925.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 108.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1879.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 981.8 MB in the end (delta: 114.6 MB). Peak memory consumption was 114.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 223862.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 101.2 MB). Free memory was 981.8 MB in the beginning and 902.2 MB in the end (delta: 79.6 MB). Peak memory consumption was 180.8 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...