./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 34ebb1e4 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 2a86b9fab61553f9a54467f5b62ac500f38719cf ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-34ebb1e [2019-11-21 16:15:01,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 16:15:01,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 16:15:01,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 16:15:01,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 16:15:01,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 16:15:01,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 16:15:01,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 16:15:01,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 16:15:01,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 16:15:01,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 16:15:01,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 16:15:01,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 16:15:01,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 16:15:01,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 16:15:01,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 16:15:01,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 16:15:01,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 16:15:01,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 16:15:01,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 16:15:01,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 16:15:01,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 16:15:01,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 16:15:01,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 16:15:01,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 16:15:01,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 16:15:01,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 16:15:01,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 16:15:01,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 16:15:01,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 16:15:01,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 16:15:01,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 16:15:01,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 16:15:01,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 16:15:01,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 16:15:01,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 16:15:01,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 16:15:01,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 16:15:01,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 16:15:01,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 16:15:01,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 16:15:01,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-21 16:15:01,880 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 16:15:01,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 16:15:01,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 16:15:01,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 16:15:01,883 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 16:15:01,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 16:15:01,883 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-21 16:15:01,884 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 16:15:01,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 16:15:01,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-21 16:15:01,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 16:15:01,886 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 16:15:01,886 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 16:15:01,887 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 16:15:01,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 16:15:01,887 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 16:15:01,887 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 16:15:01,888 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-21 16:15:01,888 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 16:15:01,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 16:15:01,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 16:15:01,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 16:15:01,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 16:15:01,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 16:15:01,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 16:15:01,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 16:15:01,890 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 16:15:01,891 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 16:15:01,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 16:15:01,891 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 2a86b9fab61553f9a54467f5b62ac500f38719cf [2019-11-21 16:15:02,197 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 16:15:02,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 16:15:02,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 16:15:02,216 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 16:15:02,217 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 16:15:02,217 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2019-11-21 16:15:02,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35629f5b5/6bceba584ca44844bc20006b050f0462/FLAGf3d865cff [2019-11-21 16:15:02,853 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 16:15:02,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2019-11-21 16:15:02,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35629f5b5/6bceba584ca44844bc20006b050f0462/FLAGf3d865cff [2019-11-21 16:15:03,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35629f5b5/6bceba584ca44844bc20006b050f0462 [2019-11-21 16:15:03,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 16:15:03,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 16:15:03,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 16:15:03,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 16:15:03,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 16:15:03,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:15:03" (1/1) ... [2019-11-21 16:15:03,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34aa0f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03, skipping insertion in model container [2019-11-21 16:15:03,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:15:03" (1/1) ... [2019-11-21 16:15:03,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 16:15:03,205 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 16:15:03,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 16:15:03,796 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 16:15:03,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 16:15:03,955 INFO L205 MainTranslator]: Completed translation [2019-11-21 16:15:03,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03 WrapperNode [2019-11-21 16:15:03,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 16:15:03,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 16:15:03,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 16:15:03,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 16:15:03,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03" (1/1) ... [2019-11-21 16:15:03,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03" (1/1) ... [2019-11-21 16:15:04,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03" (1/1) ... [2019-11-21 16:15:04,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03" (1/1) ... [2019-11-21 16:15:04,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03" (1/1) ... [2019-11-21 16:15:04,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03" (1/1) ... [2019-11-21 16:15:04,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03" (1/1) ... [2019-11-21 16:15:04,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 16:15:04,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 16:15:04,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 16:15:04,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 16:15:04,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 16:15:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 16:15:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-21 16:15:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 16:15:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 16:15:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-21 16:15:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-21 16:15:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-21 16:15:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-21 16:15:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-21 16:15:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-21 16:15:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-21 16:15:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-21 16:15:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-21 16:15:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-21 16:15:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-21 16:15:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-21 16:15:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-21 16:15:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-21 16:15:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-21 16:15:04,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-21 16:15:04,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-21 16:15:04,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-21 16:15:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-21 16:15:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-21 16:15:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-21 16:15:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-21 16:15:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-21 16:15:04,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-21 16:15:04,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-21 16:15:04,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-21 16:15:04,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-21 16:15:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-21 16:15:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-21 16:15:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-21 16:15:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-21 16:15:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-21 16:15:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-21 16:15:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-21 16:15:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-21 16:15:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-21 16:15:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-21 16:15:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 16:15:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-21 16:15:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-21 16:15:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-21 16:15:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 16:15:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 16:15:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 16:15:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 16:15:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 16:15:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 16:15:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 16:15:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 16:15:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 16:15:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 16:15:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 16:15:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 16:15:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 16:15:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 16:15:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 16:15:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 16:15:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 16:15:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 16:15:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-21 16:15:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-21 16:15:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-21 16:15:04,178 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 16:15:04,178 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 16:15:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 16:15:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 16:15:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 16:15:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 16:15:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 16:15:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 16:15:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 16:15:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 16:15:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 16:15:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 16:15:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 16:15:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 16:15:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 16:15:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 16:15:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 16:15:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 16:15:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 16:15:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 16:15:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 16:15:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 16:15:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 16:15:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 16:15:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 16:15:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 16:15:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 16:15:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 16:15:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 16:15:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 16:15:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 16:15:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 16:15:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 16:15:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 16:15:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 16:15:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 16:15:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 16:15:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 16:15:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 16:15:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 16:15:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 16:15:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 16:15:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 16:15:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 16:15:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 16:15:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 16:15:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 16:15:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 16:15:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 16:15:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 16:15:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 16:15:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 16:15:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 16:15:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 16:15:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 16:15:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 16:15:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 16:15:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 16:15:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 16:15:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 16:15:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 16:15:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 16:15:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 16:15:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 16:15:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 16:15:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 16:15:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 16:15:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 16:15:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 16:15:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 16:15:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 16:15:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 16:15:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 16:15:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 16:15:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 16:15:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 16:15:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 16:15:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 16:15:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 16:15:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 16:15:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 16:15:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 16:15:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 16:15:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 16:15:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 16:15:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 16:15:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-21 16:15:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-21 16:15:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-21 16:15:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-21 16:15:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-21 16:15:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-21 16:15:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-21 16:15:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-21 16:15:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 16:15:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-21 16:15:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-21 16:15:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-21 16:15:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-21 16:15:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-21 16:15:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-21 16:15:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-21 16:15:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-21 16:15:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-21 16:15:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-21 16:15:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-21 16:15:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-21 16:15:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-21 16:15:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-21 16:15:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 16:15:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-21 16:15:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-21 16:15:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-21 16:15:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-21 16:15:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-21 16:15:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 16:15:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 16:15:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-21 16:15:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-21 16:15:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-21 16:15:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-21 16:15:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-21 16:15:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-21 16:15:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-21 16:15:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-21 16:15:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-21 16:15:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-21 16:15:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-21 16:15:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-21 16:15:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-21 16:15:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-21 16:15:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-21 16:15:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-21 16:15:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-21 16:15:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-21 16:15:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 16:15:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 16:15:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-21 16:15:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-21 16:15:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 16:15:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-21 16:15:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-21 16:15:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-21 16:15:04,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-21 16:15:04,868 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-21 16:15:05,284 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-21 16:15:05,624 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 16:15:05,624 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-21 16:15:05,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:15:05 BoogieIcfgContainer [2019-11-21 16:15:05,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 16:15:05,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 16:15:05,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 16:15:05,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 16:15:05,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:15:03" (1/3) ... [2019-11-21 16:15:05,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c3d3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:15:05, skipping insertion in model container [2019-11-21 16:15:05,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:03" (2/3) ... [2019-11-21 16:15:05,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c3d3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:15:05, skipping insertion in model container [2019-11-21 16:15:05,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:15:05" (3/3) ... [2019-11-21 16:15:05,637 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-1.i [2019-11-21 16:15:05,647 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 16:15:05,659 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2019-11-21 16:15:05,672 INFO L249 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2019-11-21 16:15:05,696 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 16:15:05,697 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 16:15:05,697 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 16:15:05,697 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 16:15:05,697 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 16:15:05,697 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 16:15:05,698 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 16:15:05,698 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 16:15:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2019-11-21 16:15:05,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 16:15:05,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:05,736 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:05,737 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:05,745 INFO L82 PathProgramCache]: Analyzing trace with hash 120577495, now seen corresponding path program 1 times [2019-11-21 16:15:05,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:05,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1351369131] [2019-11-21 16:15:05,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:06,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 16:15:06,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:06,169 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 [2019-11-21 16:15:06,169 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 16:15:06,180 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 16:15:06,180 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 16:15:06,181 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 16:15:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:06,224 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:06,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1351369131] [2019-11-21 16:15:06,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:06,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 16:15:06,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430409530] [2019-11-21 16:15:06,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 16:15:06,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:06,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 16:15:06,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 16:15:06,339 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 5 states. [2019-11-21 16:15:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:06,604 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2019-11-21 16:15:06,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 16:15:06,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-21 16:15:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:06,625 INFO L225 Difference]: With dead ends: 74 [2019-11-21 16:15:06,626 INFO L226 Difference]: Without dead ends: 71 [2019-11-21 16:15:06,630 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 [2019-11-21 16:15:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-21 16:15:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2019-11-21 16:15:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-21 16:15:06,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2019-11-21 16:15:06,718 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 17 [2019-11-21 16:15:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:06,718 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2019-11-21 16:15:06,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 16:15:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2019-11-21 16:15:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 16:15:06,721 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:06,721 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:06,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:06,935 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:06,936 INFO L82 PathProgramCache]: Analyzing trace with hash 120577496, now seen corresponding path program 1 times [2019-11-21 16:15:06,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:06,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [359839439] [2019-11-21 16:15:06,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:07,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-21 16:15:07,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:07,257 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 [2019-11-21 16:15:07,258 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 16:15:07,264 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 16:15:07,264 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 16:15:07,265 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 16:15:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:07,314 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:07,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [359839439] [2019-11-21 16:15:07,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:07,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-21 16:15:07,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958212722] [2019-11-21 16:15:07,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-21 16:15:07,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:07,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-21 16:15:07,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-21 16:15:07,642 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 10 states. [2019-11-21 16:15:08,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:08,148 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2019-11-21 16:15:08,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 16:15:08,149 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-21 16:15:08,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:08,152 INFO L225 Difference]: With dead ends: 70 [2019-11-21 16:15:08,152 INFO L226 Difference]: Without dead ends: 70 [2019-11-21 16:15:08,153 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-21 16:15:08,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-21 16:15:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2019-11-21 16:15:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-21 16:15:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2019-11-21 16:15:08,173 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 17 [2019-11-21 16:15:08,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:08,174 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2019-11-21 16:15:08,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-21 16:15:08,174 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2019-11-21 16:15:08,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 16:15:08,177 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:08,177 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:08,383 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:08,384 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:08,384 INFO L82 PathProgramCache]: Analyzing trace with hash 149206646, now seen corresponding path program 1 times [2019-11-21 16:15:08,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:08,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [873889189] [2019-11-21 16:15:08,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:08,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 16:15:08,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:08,730 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:08,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [873889189] [2019-11-21 16:15:08,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:08,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 16:15:08,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068841522] [2019-11-21 16:15:08,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 16:15:08,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:08,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 16:15:08,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 16:15:08,769 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2019-11-21 16:15:08,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:08,794 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2019-11-21 16:15:08,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 16:15:08,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-21 16:15:08,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:08,796 INFO L225 Difference]: With dead ends: 64 [2019-11-21 16:15:08,796 INFO L226 Difference]: Without dead ends: 64 [2019-11-21 16:15:08,797 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 [2019-11-21 16:15:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-21 16:15:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2019-11-21 16:15:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-21 16:15:08,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2019-11-21 16:15:08,803 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 17 [2019-11-21 16:15:08,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:08,804 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2019-11-21 16:15:08,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 16:15:08,804 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2019-11-21 16:15:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 16:15:08,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:08,805 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:09,008 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:09,010 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:09,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:09,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1768010814, now seen corresponding path program 1 times [2019-11-21 16:15:09,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:09,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [93972934] [2019-11-21 16:15:09,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:09,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 16:15:09,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:09,258 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:09,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [93972934] [2019-11-21 16:15:09,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:09,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 16:15:09,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425087810] [2019-11-21 16:15:09,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 16:15:09,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:09,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 16:15:09,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 16:15:09,398 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 5 states. [2019-11-21 16:15:09,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:09,421 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2019-11-21 16:15:09,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 16:15:09,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-21 16:15:09,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:09,425 INFO L225 Difference]: With dead ends: 64 [2019-11-21 16:15:09,425 INFO L226 Difference]: Without dead ends: 64 [2019-11-21 16:15:09,426 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 16:15:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-21 16:15:09,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2019-11-21 16:15:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-21 16:15:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2019-11-21 16:15:09,436 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 22 [2019-11-21 16:15:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:09,437 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2019-11-21 16:15:09,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 16:15:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2019-11-21 16:15:09,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 16:15:09,439 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:09,439 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:09,639 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:09,640 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:09,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:09,641 INFO L82 PathProgramCache]: Analyzing trace with hash 730005123, now seen corresponding path program 1 times [2019-11-21 16:15:09,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:09,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1432185081] [2019-11-21 16:15:09,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:09,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-21 16:15:09,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:09,878 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:09,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1432185081] [2019-11-21 16:15:09,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:09,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-21 16:15:09,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133959257] [2019-11-21 16:15:09,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 16:15:09,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:09,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 16:15:09,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 16:15:09,986 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 3 states. [2019-11-21 16:15:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:10,074 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2019-11-21 16:15:10,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 16:15:10,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-11-21 16:15:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:10,076 INFO L225 Difference]: With dead ends: 68 [2019-11-21 16:15:10,076 INFO L226 Difference]: Without dead ends: 58 [2019-11-21 16:15:10,076 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 16:15:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-21 16:15:10,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-11-21 16:15:10,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-21 16:15:10,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2019-11-21 16:15:10,087 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 22 [2019-11-21 16:15:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:10,088 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2019-11-21 16:15:10,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 16:15:10,088 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2019-11-21 16:15:10,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-21 16:15:10,091 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:10,091 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:10,296 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:10,297 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:10,298 INFO L82 PathProgramCache]: Analyzing trace with hash -734714589, now seen corresponding path program 1 times [2019-11-21 16:15:10,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:10,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1106362026] [2019-11-21 16:15:10,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:10,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-21 16:15:10,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:10,590 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:10,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1106362026] [2019-11-21 16:15:10,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:10,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-21 16:15:10,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183727804] [2019-11-21 16:15:10,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 16:15:10,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:10,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 16:15:10,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-21 16:15:10,652 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 6 states. [2019-11-21 16:15:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:10,711 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2019-11-21 16:15:10,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 16:15:10,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-21 16:15:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:10,715 INFO L225 Difference]: With dead ends: 64 [2019-11-21 16:15:10,716 INFO L226 Difference]: Without dead ends: 60 [2019-11-21 16:15:10,716 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-21 16:15:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-21 16:15:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-11-21 16:15:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-21 16:15:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2019-11-21 16:15:10,721 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 32 [2019-11-21 16:15:10,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:10,721 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2019-11-21 16:15:10,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 16:15:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2019-11-21 16:15:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-21 16:15:10,722 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:10,723 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:10,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:10,924 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:10,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1771101565, now seen corresponding path program 1 times [2019-11-21 16:15:10,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:10,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [742382554] [2019-11-21 16:15:10,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:11,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 16:15:11,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:11,240 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:11,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [742382554] [2019-11-21 16:15:11,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 16:15:11,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-21 16:15:11,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127586476] [2019-11-21 16:15:11,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-21 16:15:11,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:11,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-21 16:15:11,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-21 16:15:11,375 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 10 states. [2019-11-21 16:15:11,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:11,616 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2019-11-21 16:15:11,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-21 16:15:11,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2019-11-21 16:15:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:11,625 INFO L225 Difference]: With dead ends: 68 [2019-11-21 16:15:11,625 INFO L226 Difference]: Without dead ends: 64 [2019-11-21 16:15:11,625 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-11-21 16:15:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-21 16:15:11,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-11-21 16:15:11,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-21 16:15:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2019-11-21 16:15:11,630 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 34 [2019-11-21 16:15:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:11,631 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2019-11-21 16:15:11,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-21 16:15:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2019-11-21 16:15:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-21 16:15:11,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:11,635 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:11,835 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:11,836 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1571056317, now seen corresponding path program 2 times [2019-11-21 16:15:11,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:11,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2099423598] [2019-11-21 16:15:11,838 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:12,125 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 16:15:12,125 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 16:15:12,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-21 16:15:12,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:12,144 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 [2019-11-21 16:15:12,144 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 16:15:12,146 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 16:15:12,146 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 16:15:12,146 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 16:15:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-21 16:15:12,292 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-21 16:15:12,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2099423598] [2019-11-21 16:15:12,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:12,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-21 16:15:12,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208283492] [2019-11-21 16:15:12,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-21 16:15:12,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:12,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-21 16:15:12,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-21 16:15:12,397 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 13 states. [2019-11-21 16:15:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:13,155 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2019-11-21 16:15:13,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 16:15:13,156 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2019-11-21 16:15:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:13,158 INFO L225 Difference]: With dead ends: 63 [2019-11-21 16:15:13,158 INFO L226 Difference]: Without dead ends: 63 [2019-11-21 16:15:13,158 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-21 16:15:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-21 16:15:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-21 16:15:13,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-21 16:15:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-11-21 16:15:13,163 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 38 [2019-11-21 16:15:13,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:13,164 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2019-11-21 16:15:13,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-21 16:15:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2019-11-21 16:15:13,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-21 16:15:13,165 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:13,165 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:13,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:13,370 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:13,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:13,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1571056316, now seen corresponding path program 1 times [2019-11-21 16:15:13,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:13,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [780409512] [2019-11-21 16:15:13,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:13,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-21 16:15:13,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:13,787 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:14,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [780409512] [2019-11-21 16:15:14,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 16:15:14,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-21 16:15:14,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401752038] [2019-11-21 16:15:14,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-21 16:15:14,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:14,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-21 16:15:14,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2019-11-21 16:15:14,106 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 18 states. [2019-11-21 16:15:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:15,334 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2019-11-21 16:15:15,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-21 16:15:15,338 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2019-11-21 16:15:15,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:15,339 INFO L225 Difference]: With dead ends: 75 [2019-11-21 16:15:15,339 INFO L226 Difference]: Without dead ends: 71 [2019-11-21 16:15:15,340 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2019-11-21 16:15:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-21 16:15:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-11-21 16:15:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-21 16:15:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2019-11-21 16:15:15,355 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 38 [2019-11-21 16:15:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:15,357 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2019-11-21 16:15:15,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-21 16:15:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2019-11-21 16:15:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-21 16:15:15,360 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:15,360 INFO L410 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:15,560 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:15,562 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:15,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:15,562 INFO L82 PathProgramCache]: Analyzing trace with hash 905861828, now seen corresponding path program 2 times [2019-11-21 16:15:15,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:15,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1638839419] [2019-11-21 16:15:15,564 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:15,845 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 16:15:15,845 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 16:15:15,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-21 16:15:15,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:15,882 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 [2019-11-21 16:15:15,883 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 16:15:15,888 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 16:15:15,888 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 16:15:15,888 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 16:15:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-21 16:15:16,153 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-21 16:15:17,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1638839419] [2019-11-21 16:15:17,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:17,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-21 16:15:17,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252817840] [2019-11-21 16:15:17,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-21 16:15:17,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:17,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-21 16:15:17,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-21 16:15:17,048 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 23 states. [2019-11-21 16:15:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:18,496 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2019-11-21 16:15:18,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 16:15:18,497 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2019-11-21 16:15:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:18,498 INFO L225 Difference]: With dead ends: 70 [2019-11-21 16:15:18,498 INFO L226 Difference]: Without dead ends: 70 [2019-11-21 16:15:18,499 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-21 16:15:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-21 16:15:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-11-21 16:15:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-21 16:15:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2019-11-21 16:15:18,505 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 46 [2019-11-21 16:15:18,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:18,505 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2019-11-21 16:15:18,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-21 16:15:18,506 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2019-11-21 16:15:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-21 16:15:18,507 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:18,507 INFO L410 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:18,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:18,712 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:18,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:18,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1162659866, now seen corresponding path program 1 times [2019-11-21 16:15:18,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:18,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [303651293] [2019-11-21 16:15:18,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:19,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-21 16:15:19,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:19,324 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:19,449 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-11-21 16:15:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:15:20,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [303651293] [2019-11-21 16:15:20,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 16:15:20,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2019-11-21 16:15:20,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90148112] [2019-11-21 16:15:20,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-21 16:15:20,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:20,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-21 16:15:20,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2019-11-21 16:15:20,636 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 34 states. [2019-11-21 16:15:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:21,889 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2019-11-21 16:15:21,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-21 16:15:21,890 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 51 [2019-11-21 16:15:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:21,892 INFO L225 Difference]: With dead ends: 76 [2019-11-21 16:15:21,892 INFO L226 Difference]: Without dead ends: 72 [2019-11-21 16:15:21,893 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2019-11-21 16:15:21,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-21 16:15:21,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2019-11-21 16:15:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-21 16:15:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2019-11-21 16:15:21,898 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 51 [2019-11-21 16:15:21,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:21,898 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2019-11-21 16:15:21,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-21 16:15:21,898 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2019-11-21 16:15:21,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-21 16:15:21,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:21,900 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:22,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:22,112 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:22,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:22,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1097236102, now seen corresponding path program 2 times [2019-11-21 16:15:22,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:22,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [632039895] [2019-11-21 16:15:22,114 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:22,412 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 16:15:22,412 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 16:15:22,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-21 16:15:22,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:22,425 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 [2019-11-21 16:15:22,426 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 16:15:22,430 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 16:15:22,430 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 16:15:22,430 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 16:15:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-21 16:15:22,612 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-21 16:15:22,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [632039895] [2019-11-21 16:15:22,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:22,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-21 16:15:22,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116898103] [2019-11-21 16:15:22,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-21 16:15:22,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:22,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-21 16:15:22,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-21 16:15:22,694 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 13 states. [2019-11-21 16:15:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:23,295 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2019-11-21 16:15:23,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 16:15:23,295 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-11-21 16:15:23,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:23,296 INFO L225 Difference]: With dead ends: 70 [2019-11-21 16:15:23,296 INFO L226 Difference]: Without dead ends: 70 [2019-11-21 16:15:23,297 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-21 16:15:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-21 16:15:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-11-21 16:15:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-21 16:15:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2019-11-21 16:15:23,301 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 53 [2019-11-21 16:15:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:23,302 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2019-11-21 16:15:23,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-21 16:15:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2019-11-21 16:15:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-21 16:15:23,303 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:23,304 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:23,506 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:23,507 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:23,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1097236103, now seen corresponding path program 1 times [2019-11-21 16:15:23,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:23,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [838647417] [2019-11-21 16:15:23,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:23,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-21 16:15:23,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:24,000 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 [2019-11-21 16:15:24,001 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 16:15:24,006 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 16:15:24,007 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 16:15:24,007 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 16:15:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-21 16:15:24,249 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-21 16:15:25,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [838647417] [2019-11-21 16:15:25,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:25,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-21 16:15:25,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664521727] [2019-11-21 16:15:25,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-21 16:15:25,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:25,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-21 16:15:25,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-21 16:15:25,087 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 23 states. [2019-11-21 16:15:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:26,299 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2019-11-21 16:15:26,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 16:15:26,300 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2019-11-21 16:15:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:26,301 INFO L225 Difference]: With dead ends: 68 [2019-11-21 16:15:26,301 INFO L226 Difference]: Without dead ends: 68 [2019-11-21 16:15:26,302 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-21 16:15:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-21 16:15:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-21 16:15:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-21 16:15:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-11-21 16:15:26,306 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 53 [2019-11-21 16:15:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:26,306 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2019-11-21 16:15:26,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-21 16:15:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2019-11-21 16:15:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-21 16:15:26,308 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:26,308 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:26,511 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:26,512 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:26,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:26,512 INFO L82 PathProgramCache]: Analyzing trace with hash -935548641, now seen corresponding path program 1 times [2019-11-21 16:15:26,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:26,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [804716049] [2019-11-21 16:15:26,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:26,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 16:15:26,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-21 16:15:26,854 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-21 16:15:27,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [804716049] [2019-11-21 16:15:27,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:27,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2019-11-21 16:15:27,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516445220] [2019-11-21 16:15:27,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 16:15:27,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:27,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 16:15:27,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-21 16:15:27,061 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 8 states. [2019-11-21 16:15:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:27,138 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2019-11-21 16:15:27,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 16:15:27,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-11-21 16:15:27,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:27,139 INFO L225 Difference]: With dead ends: 70 [2019-11-21 16:15:27,139 INFO L226 Difference]: Without dead ends: 68 [2019-11-21 16:15:27,140 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-21 16:15:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-21 16:15:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-21 16:15:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-21 16:15:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2019-11-21 16:15:27,146 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 51 [2019-11-21 16:15:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:27,146 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2019-11-21 16:15:27,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 16:15:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2019-11-21 16:15:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-21 16:15:27,147 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:27,147 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:27,348 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:27,349 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:27,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:27,349 INFO L82 PathProgramCache]: Analyzing trace with hash 923461308, now seen corresponding path program 1 times [2019-11-21 16:15:27,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:27,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [671745925] [2019-11-21 16:15:27,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:15:27,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-21 16:15:27,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:15:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-21 16:15:27,682 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:15:27,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 16:15:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-21 16:15:28,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [671745925] [2019-11-21 16:15:28,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:15:28,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2019-11-21 16:15:28,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902178491] [2019-11-21 16:15:28,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 16:15:28,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:15:28,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 16:15:28,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-21 16:15:28,007 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 11 states. [2019-11-21 16:15:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:15:28,115 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2019-11-21 16:15:28,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 16:15:28,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2019-11-21 16:15:28,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:15:28,117 INFO L225 Difference]: With dead ends: 72 [2019-11-21 16:15:28,117 INFO L226 Difference]: Without dead ends: 68 [2019-11-21 16:15:28,117 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-21 16:15:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-21 16:15:28,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-21 16:15:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-21 16:15:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2019-11-21 16:15:28,121 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2019-11-21 16:15:28,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:15:28,122 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2019-11-21 16:15:28,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 16:15:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2019-11-21 16:15:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-21 16:15:28,123 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:15:28,124 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:15:28,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:28,327 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 16:15:28,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:15:28,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1423933729, now seen corresponding path program 1 times [2019-11-21 16:15:28,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:15:28,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1715482538] [2019-11-21 16:15:28,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-21 16:15:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 16:15:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 16:15:37,736 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 16:15:37,737 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 16:15:37,937 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 16:15:37,955 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2019-11-21 16:15:37,960 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-21 16:15:37,966 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2019-11-21 16:15:37,967 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2019-11-21 16:15:37,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:15:37 BoogieIcfgContainer [2019-11-21 16:15:37,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 16:15:37,981 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 16:15:37,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 16:15:37,982 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 16:15:37,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:15:05" (3/4) ... [2019-11-21 16:15:37,988 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-21 16:15:37,991 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 16:15:37,992 INFO L168 Benchmark]: Toolchain (without parser) took 34868.35 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 365.4 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -156.0 MB). Peak memory consumption was 209.4 MB. Max. memory is 11.5 GB. [2019-11-21 16:15:37,994 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 16:15:37,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 831.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-21 16:15:37,995 INFO L168 Benchmark]: Boogie Preprocessor took 133.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 16:15:37,996 INFO L168 Benchmark]: RCFGBuilder took 1536.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 103.7 MB). Peak memory consumption was 103.7 MB. Max. memory is 11.5 GB. [2019-11-21 16:15:37,996 INFO L168 Benchmark]: TraceAbstraction took 32352.22 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 222.8 MB). Free memory was 993.8 MB in the beginning and 1.1 GB in the end (delta: -113.2 MB). Peak memory consumption was 109.6 MB. Max. memory is 11.5 GB. [2019-11-21 16:15:37,999 INFO L168 Benchmark]: Witness Printer took 9.75 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 16:15:38,004 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 831.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 133.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1536.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 103.7 MB). Peak memory consumption was 103.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 32352.22 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 222.8 MB). Free memory was 993.8 MB in the beginning and 1.1 GB in the end (delta: -113.2 MB). Peak memory consumption was 109.6 MB. Max. memory is 11.5 GB. * Witness Printer took 9.75 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 762]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 762. Possible FailurePath: [L570] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [\old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, ldv_global_msg_list={1661493519:0}] [L763] CALL entry_point() VAL [ldv_global_msg_list={1661493519:0}] [L759] struct ldv_kobject *kobj; VAL [ldv_global_msg_list={1661493519:0}] [L760] CALL, EXPR ldv_kobject_create() VAL [ldv_global_msg_list={1661493519:0}] [L741] struct ldv_kobject *kobj; VAL [ldv_global_msg_list={1661493519:0}] [L742] CALL, EXPR ldv_malloc(sizeof(*kobj)) VAL [\old(size)=16, ldv_global_msg_list={1661493519:0}] [L527] COND TRUE __VERIFIER_nondet_int() [L528] return malloc(size); VAL [\old(size)=16, \result={-2147483644:0}, ldv_global_msg_list={1661493519:0}, malloc(size)={-2147483644:0}, size=16] [L742] RET, EXPR ldv_malloc(sizeof(*kobj)) VAL [ldv_global_msg_list={1661493519:0}, ldv_malloc(sizeof(*kobj))={-2147483644:0}] [L742] kobj = ldv_malloc(sizeof(*kobj)) [L743] COND FALSE !(!kobj) VAL [kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}] [L745] FCALL memset(kobj, 0, sizeof(*kobj)) VAL [kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}, memset(kobj, 0, sizeof(*kobj))={-2147483644:0}] [L746] CALL ldv_kobject_init(kobj) VAL [kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}] [L731] COND FALSE !(!kobj) VAL [kobj={-2147483644:0}, kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}] [L734] CALL ldv_kobject_init_internal(kobj) VAL [kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}] [L724] COND FALSE !(!kobj) VAL [kobj={-2147483644:0}, kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}] [L726] CALL ldv_kref_init(&kobj->kref) VAL [kref={-2147483644:12}, ldv_global_msg_list={1661493519:0}] [L683] ((&kref->refcount)->counter) = (1) VAL [kref={-2147483644:12}, kref={-2147483644:12}, ldv_global_msg_list={1661493519:0}] [L726] RET ldv_kref_init(&kobj->kref) VAL [kobj={-2147483644:0}, kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}] [L727] CALL LDV_INIT_LIST_HEAD(&kobj->entry) VAL [ldv_global_msg_list={1661493519:0}, list={-2147483644:4}] [L541] list->next = list VAL [ldv_global_msg_list={1661493519:0}, list={-2147483644:4}, list={-2147483644:4}] [L542] list->prev = list VAL [ldv_global_msg_list={1661493519:0}, list={-2147483644:4}, list={-2147483644:4}] [L727] RET LDV_INIT_LIST_HEAD(&kobj->entry) VAL [kobj={-2147483644:0}, kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}] [L734] RET ldv_kobject_init_internal(kobj) VAL [kobj={-2147483644:0}, kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}] [L746] RET ldv_kobject_init(kobj) VAL [kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}] [L747] return kobj; VAL [\result={-2147483644:0}, kobj={-2147483644:0}, ldv_global_msg_list={1661493519:0}] [L760] RET, EXPR ldv_kobject_create() VAL [ldv_global_msg_list={1661493519:0}, ldv_kobject_create()={-2147483644:0}] [L760] kobj = ldv_kobject_create() [L763] RET entry_point() VAL [ldv_global_msg_list={1661493519:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 46 procedures, 324 locations, 71 error locations. Result: UNSAFE, OverallTime: 32.2s, OverallIterations: 16, TraceHistogramMax: 16, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 756 SDtfs, 380 SDslu, 4138 SDs, 0 SdLazy, 2413 SolverSat, 162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1109 GetRequests, 905 SyntacticMatches, 17 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 5.7s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 614 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1064 ConstructedInterpolants, 50 QuantifiedInterpolants, 160774 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2245 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 30 InterpolantComputations, 24 PerfectInterpolantSequences, 1340/1598 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...