./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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-64bit-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 64bit --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 15:45:12,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 15:45:12,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 15:45:12,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 15:45:12,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 15:45:12,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 15:45:12,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 15:45:12,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 15:45:12,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 15:45:12,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 15:45:12,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 15:45:12,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 15:45:12,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 15:45:12,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 15:45:12,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 15:45:12,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 15:45:12,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 15:45:12,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 15:45:12,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 15:45:12,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 15:45:12,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 15:45:12,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 15:45:12,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 15:45:12,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 15:45:12,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 15:45:12,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 15:45:12,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 15:45:12,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 15:45:12,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 15:45:12,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 15:45:12,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 15:45:12,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 15:45:12,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 15:45:12,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 15:45:12,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 15:45:12,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 15:45:12,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 15:45:12,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 15:45:12,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 15:45:12,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 15:45:12,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 15:45:12,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2019-11-21 15:45:12,840 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 15:45:12,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 15:45:12,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 15:45:12,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 15:45:12,842 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 15:45:12,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 15:45:12,843 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 15:45:12,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 15:45:12,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 15:45:12,844 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 15:45:12,844 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 15:45:12,844 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 15:45:12,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 15:45:12,845 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 15:45:12,845 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 15:45:12,845 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 15:45:12,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 15:45:12,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 15:45:12,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 15:45:12,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 15:45:12,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 15:45:12,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 15:45:12,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 15:45:12,848 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 15:45:12,848 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 15:45:12,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 15:45:12,849 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a86b9fab61553f9a54467f5b62ac500f38719cf [2019-11-21 15:45:13,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 15:45:13,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 15:45:13,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 15:45:13,153 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 15:45:13,153 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 15:45:13,154 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2019-11-21 15:45:13,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c137f2f/11eded7178ec4ac7ac3d0bc7fe7237fb/FLAG42a199a43 [2019-11-21 15:45:13,767 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 15:45:13,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-1.i [2019-11-21 15:45:13,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c137f2f/11eded7178ec4ac7ac3d0bc7fe7237fb/FLAG42a199a43 [2019-11-21 15:45:14,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c137f2f/11eded7178ec4ac7ac3d0bc7fe7237fb [2019-11-21 15:45:14,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 15:45:14,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 15:45:14,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 15:45:14,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 15:45:14,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 15:45:14,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 03:45:14" (1/1) ... [2019-11-21 15:45:14,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d40c4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14, skipping insertion in model container [2019-11-21 15:45:14,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 03:45:14" (1/1) ... [2019-11-21 15:45:14,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 15:45:14,140 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 15:45:14,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 15:45:14,812 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 15:45:14,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 15:45:14,983 INFO L205 MainTranslator]: Completed translation [2019-11-21 15:45:14,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14 WrapperNode [2019-11-21 15:45:14,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 15:45:14,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 15:45:14,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 15:45:14,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 15:45:14,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14" (1/1) ... [2019-11-21 15:45:14,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14" (1/1) ... [2019-11-21 15:45:15,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14" (1/1) ... [2019-11-21 15:45:15,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14" (1/1) ... [2019-11-21 15:45:15,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14" (1/1) ... [2019-11-21 15:45:15,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14" (1/1) ... [2019-11-21 15:45:15,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14" (1/1) ... [2019-11-21 15:45:15,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 15:45:15,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 15:45:15,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 15:45:15,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 15:45:15,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14" (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 15:45:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 15:45:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 15:45:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-21 15:45:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 15:45:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 15:45:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-21 15:45:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-21 15:45:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-21 15:45:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-21 15:45:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-21 15:45:15,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-21 15:45:15,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-21 15:45:15,190 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-21 15:45:15,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-21 15:45:15,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-21 15:45:15,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-21 15:45:15,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-21 15:45:15,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-21 15:45:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-21 15:45:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-21 15:45:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-21 15:45:15,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-21 15:45:15,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-21 15:45:15,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-21 15:45:15,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-21 15:45:15,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-21 15:45:15,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-21 15:45:15,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-21 15:45:15,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-21 15:45:15,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-21 15:45:15,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-21 15:45:15,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-21 15:45:15,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-21 15:45:15,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-21 15:45:15,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-21 15:45:15,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-21 15:45:15,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-21 15:45:15,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-21 15:45:15,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-21 15:45:15,200 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-21 15:45:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-21 15:45:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-21 15:45:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 15:45:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-21 15:45:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-21 15:45:15,202 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-21 15:45:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 15:45:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 15:45:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 15:45:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 15:45:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 15:45:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 15:45:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 15:45:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 15:45:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 15:45:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 15:45:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 15:45:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 15:45:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 15:45:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 15:45:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 15:45:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 15:45:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 15:45:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 15:45:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-21 15:45:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-21 15:45:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-21 15:45:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 15:45:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 15:45:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 15:45:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 15:45:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 15:45:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 15:45:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 15:45:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 15:45:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 15:45:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 15:45:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 15:45:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 15:45:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 15:45:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 15:45:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 15:45:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 15:45:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 15:45:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 15:45:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 15:45:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 15:45:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 15:45:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 15:45:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 15:45:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 15:45:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 15:45:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 15:45:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 15:45:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 15:45:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 15:45:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 15:45:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 15:45:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 15:45:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 15:45:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 15:45:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 15:45:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 15:45:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 15:45:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 15:45:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 15:45:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 15:45:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 15:45:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 15:45:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 15:45:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 15:45:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 15:45:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 15:45:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 15:45:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 15:45:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 15:45:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 15:45:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 15:45:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 15:45:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 15:45:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 15:45:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 15:45:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 15:45:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 15:45:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 15:45:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 15:45:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 15:45:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 15:45:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 15:45:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 15:45:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 15:45:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 15:45:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 15:45:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 15:45:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 15:45:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 15:45:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 15:45:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 15:45:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 15:45:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 15:45:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 15:45:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 15:45:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 15:45:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 15:45:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 15:45:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 15:45:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 15:45:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 15:45:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 15:45:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 15:45:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 15:45:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 15:45:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 15:45:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-21 15:45:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-21 15:45:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-21 15:45:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-21 15:45:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-21 15:45:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-21 15:45:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-21 15:45:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-21 15:45:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 15:45:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-21 15:45:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-21 15:45:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-21 15:45:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-21 15:45:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-21 15:45:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-21 15:45:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-21 15:45:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-21 15:45:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-21 15:45:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-21 15:45:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-21 15:45:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-21 15:45:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-21 15:45:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-21 15:45:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 15:45:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-21 15:45:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-21 15:45:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-21 15:45:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-21 15:45:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-21 15:45:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 15:45:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 15:45:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-21 15:45:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-21 15:45:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-21 15:45:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-21 15:45:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-21 15:45:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-21 15:45:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-21 15:45:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-21 15:45:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-21 15:45:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-21 15:45:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-21 15:45:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-21 15:45:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-21 15:45:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-21 15:45:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-21 15:45:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-21 15:45:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-21 15:45:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-21 15:45:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 15:45:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 15:45:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-21 15:45:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-21 15:45:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 15:45:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-21 15:45:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-21 15:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-21 15:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-21 15:45:15,900 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-21 15:45:16,334 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-21 15:45:16,667 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 15:45:16,668 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-21 15:45:16,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 03:45:16 BoogieIcfgContainer [2019-11-21 15:45:16,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 15:45:16,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 15:45:16,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 15:45:16,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 15:45:16,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 03:45:14" (1/3) ... [2019-11-21 15:45:16,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e42bd45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 03:45:16, skipping insertion in model container [2019-11-21 15:45:16,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 03:45:14" (2/3) ... [2019-11-21 15:45:16,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e42bd45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 03:45:16, skipping insertion in model container [2019-11-21 15:45:16,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 03:45:16" (3/3) ... [2019-11-21 15:45:16,678 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-1.i [2019-11-21 15:45:16,688 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 15:45:16,697 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2019-11-21 15:45:16,709 INFO L249 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2019-11-21 15:45:16,726 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 15:45:16,727 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 15:45:16,727 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 15:45:16,727 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 15:45:16,727 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 15:45:16,727 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 15:45:16,727 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 15:45:16,727 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 15:45:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2019-11-21 15:45:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 15:45:16,752 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:16,753 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 15:45:16,754 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 15:45:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash 120577495, now seen corresponding path program 1 times [2019-11-21 15:45:16,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:16,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [749540647] [2019-11-21 15:45:16,770 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 15:45:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:17,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 15:45:17,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:17,214 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 15:45:17,215 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:45:17,224 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:45:17,224 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:45:17,225 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 15:45:17,258 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 15:45:17,259 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:17,315 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 15:45:17,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [749540647] [2019-11-21 15:45:17,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:17,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 15:45:17,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109591512] [2019-11-21 15:45:17,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 15:45:17,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:17,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 15:45:17,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 15:45:17,346 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 5 states. [2019-11-21 15:45:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:17,595 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2019-11-21 15:45:17,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 15:45:17,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-21 15:45:17,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:17,613 INFO L225 Difference]: With dead ends: 74 [2019-11-21 15:45:17,613 INFO L226 Difference]: Without dead ends: 71 [2019-11-21 15:45:17,615 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 15:45:17,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-21 15:45:17,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2019-11-21 15:45:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-21 15:45:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2019-11-21 15:45:17,691 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 17 [2019-11-21 15:45:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:17,692 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2019-11-21 15:45:17,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 15:45:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2019-11-21 15:45:17,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 15:45:17,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:17,695 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 15:45:17,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:17,910 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 15:45:17,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:17,910 INFO L82 PathProgramCache]: Analyzing trace with hash 120577496, now seen corresponding path program 1 times [2019-11-21 15:45:17,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:17,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [605294446] [2019-11-21 15:45:17,912 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 15:45:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:18,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-21 15:45:18,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:18,227 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 15:45:18,227 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:45:18,233 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:45:18,233 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:45:18,234 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 15:45:18,276 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 15:45:18,277 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:18,592 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 15:45:18,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [605294446] [2019-11-21 15:45:18,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:18,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-21 15:45:18,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358737755] [2019-11-21 15:45:18,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-21 15:45:18,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:18,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-21 15:45:18,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-21 15:45:18,596 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 10 states. [2019-11-21 15:45:19,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:19,091 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2019-11-21 15:45:19,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 15:45:19,093 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-21 15:45:19,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:19,094 INFO L225 Difference]: With dead ends: 70 [2019-11-21 15:45:19,095 INFO L226 Difference]: Without dead ends: 70 [2019-11-21 15:45:19,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-21 15:45:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-21 15:45:19,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2019-11-21 15:45:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-21 15:45:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2019-11-21 15:45:19,105 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 17 [2019-11-21 15:45:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:19,105 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2019-11-21 15:45:19,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-21 15:45:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2019-11-21 15:45:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-21 15:45:19,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:19,108 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 15:45:19,308 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:19,310 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 15:45:19,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:19,310 INFO L82 PathProgramCache]: Analyzing trace with hash 149206646, now seen corresponding path program 1 times [2019-11-21 15:45:19,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:19,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1849277154] [2019-11-21 15:45:19,312 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 15:45:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:19,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 15:45:19,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:19,647 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 15:45:19,647 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:19,688 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 15:45:19,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1849277154] [2019-11-21 15:45:19,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:19,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 15:45:19,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451975112] [2019-11-21 15:45:19,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 15:45:19,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:19,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 15:45:19,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 15:45:19,690 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2019-11-21 15:45:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:19,712 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2019-11-21 15:45:19,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 15:45:19,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-21 15:45:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:19,715 INFO L225 Difference]: With dead ends: 64 [2019-11-21 15:45:19,715 INFO L226 Difference]: Without dead ends: 64 [2019-11-21 15:45:19,715 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 15:45:19,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-21 15:45:19,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2019-11-21 15:45:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-21 15:45:19,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2019-11-21 15:45:19,722 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 17 [2019-11-21 15:45:19,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:19,723 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2019-11-21 15:45:19,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 15:45:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2019-11-21 15:45:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 15:45:19,724 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:19,724 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 15:45:19,925 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:19,926 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 15:45:19,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:19,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1768010814, now seen corresponding path program 1 times [2019-11-21 15:45:19,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:19,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [7818338] [2019-11-21 15:45:19,928 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 15:45:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:20,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 15:45:20,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:20,174 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 15:45:20,174 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:20,279 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 15:45:20,280 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [7818338] [2019-11-21 15:45:20,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:20,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 15:45:20,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550531205] [2019-11-21 15:45:20,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 15:45:20,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:20,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 15:45:20,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 15:45:20,282 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 5 states. [2019-11-21 15:45:20,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:20,304 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2019-11-21 15:45:20,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 15:45:20,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-21 15:45:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:20,307 INFO L225 Difference]: With dead ends: 64 [2019-11-21 15:45:20,307 INFO L226 Difference]: Without dead ends: 64 [2019-11-21 15:45:20,308 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 15:45:20,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-21 15:45:20,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2019-11-21 15:45:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-21 15:45:20,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2019-11-21 15:45:20,314 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 22 [2019-11-21 15:45:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:20,314 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2019-11-21 15:45:20,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 15:45:20,314 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2019-11-21 15:45:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 15:45:20,315 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:20,315 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 15:45:20,516 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:20,516 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 15:45:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:20,517 INFO L82 PathProgramCache]: Analyzing trace with hash 730005123, now seen corresponding path program 1 times [2019-11-21 15:45:20,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:20,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [490800275] [2019-11-21 15:45:20,518 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 15:45:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:20,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-21 15:45:20,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:20,765 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 15:45:20,765 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:20,856 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 15:45:20,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [490800275] [2019-11-21 15:45:20,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:20,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-21 15:45:20,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796660130] [2019-11-21 15:45:20,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 15:45:20,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:20,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 15:45:20,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 15:45:20,859 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 3 states. [2019-11-21 15:45:20,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:20,951 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2019-11-21 15:45:20,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 15:45:20,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-11-21 15:45:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:20,953 INFO L225 Difference]: With dead ends: 68 [2019-11-21 15:45:20,953 INFO L226 Difference]: Without dead ends: 58 [2019-11-21 15:45:20,954 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 15:45:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-21 15:45:20,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-11-21 15:45:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-21 15:45:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2019-11-21 15:45:20,965 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 22 [2019-11-21 15:45:20,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:20,965 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2019-11-21 15:45:20,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 15:45:20,966 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2019-11-21 15:45:20,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-21 15:45:20,968 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:20,968 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 15:45:21,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:21,173 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 15:45:21,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:21,174 INFO L82 PathProgramCache]: Analyzing trace with hash -734714589, now seen corresponding path program 1 times [2019-11-21 15:45:21,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:21,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [397210941] [2019-11-21 15:45:21,175 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 15:45:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:21,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-21 15:45:21,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:21,465 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 15:45:21,465 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:21,529 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 15:45:21,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [397210941] [2019-11-21 15:45:21,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:21,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-21 15:45:21,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559161561] [2019-11-21 15:45:21,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 15:45:21,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:21,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 15:45:21,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-21 15:45:21,531 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 6 states. [2019-11-21 15:45:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:21,588 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2019-11-21 15:45:21,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 15:45:21,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-21 15:45:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:21,595 INFO L225 Difference]: With dead ends: 64 [2019-11-21 15:45:21,595 INFO L226 Difference]: Without dead ends: 60 [2019-11-21 15:45:21,596 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 15:45:21,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-21 15:45:21,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-11-21 15:45:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-21 15:45:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2019-11-21 15:45:21,601 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 32 [2019-11-21 15:45:21,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:21,601 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2019-11-21 15:45:21,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 15:45:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2019-11-21 15:45:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-21 15:45:21,603 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:21,603 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 15:45:21,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:21,812 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 15:45:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:21,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1771101565, now seen corresponding path program 1 times [2019-11-21 15:45:21,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:21,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1293993276] [2019-11-21 15:45:21,814 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 15:45:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:22,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 15:45:22,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:22,125 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 15:45:22,125 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:22,252 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 15:45:22,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1293993276] [2019-11-21 15:45:22,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 15:45:22,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-21 15:45:22,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132626171] [2019-11-21 15:45:22,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-21 15:45:22,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:22,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-21 15:45:22,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-21 15:45:22,254 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 10 states. [2019-11-21 15:45:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:22,522 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2019-11-21 15:45:22,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-21 15:45:22,523 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2019-11-21 15:45:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:22,524 INFO L225 Difference]: With dead ends: 68 [2019-11-21 15:45:22,524 INFO L226 Difference]: Without dead ends: 64 [2019-11-21 15:45:22,525 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 15:45:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-21 15:45:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-11-21 15:45:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-21 15:45:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2019-11-21 15:45:22,530 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 34 [2019-11-21 15:45:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:22,531 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2019-11-21 15:45:22,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-21 15:45:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2019-11-21 15:45:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-21 15:45:22,532 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:22,533 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 15:45:22,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:22,737 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 15:45:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:22,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1571056317, now seen corresponding path program 2 times [2019-11-21 15:45:22,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:22,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [910605765] [2019-11-21 15:45:22,738 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 15:45:23,065 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 15:45:23,066 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 15:45:23,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-21 15:45:23,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:23,086 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 15:45:23,086 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:45:23,089 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:45:23,090 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:45:23,090 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 15:45:23,247 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 15:45:23,248 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:23,362 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 15:45:23,363 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [910605765] [2019-11-21 15:45:23,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:23,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-21 15:45:23,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68303828] [2019-11-21 15:45:23,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-21 15:45:23,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:23,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-21 15:45:23,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-21 15:45:23,365 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 13 states. [2019-11-21 15:45:24,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:24,088 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2019-11-21 15:45:24,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 15:45:24,089 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2019-11-21 15:45:24,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:24,091 INFO L225 Difference]: With dead ends: 63 [2019-11-21 15:45:24,092 INFO L226 Difference]: Without dead ends: 63 [2019-11-21 15:45:24,093 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 15:45:24,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-21 15:45:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-21 15:45:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-21 15:45:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-11-21 15:45:24,098 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 38 [2019-11-21 15:45:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:24,099 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2019-11-21 15:45:24,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-21 15:45:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2019-11-21 15:45:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-21 15:45:24,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:24,100 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 15:45:24,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:24,304 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 15:45:24,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:24,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1571056316, now seen corresponding path program 1 times [2019-11-21 15:45:24,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:24,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [154758484] [2019-11-21 15:45:24,306 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 15:45:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:24,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-21 15:45:24,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:24,737 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 15:45:24,739 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:25,078 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 15:45:25,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [154758484] [2019-11-21 15:45:25,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 15:45:25,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-21 15:45:25,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854903129] [2019-11-21 15:45:25,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-21 15:45:25,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:25,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-21 15:45:25,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2019-11-21 15:45:25,081 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 18 states. [2019-11-21 15:45:26,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:26,123 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2019-11-21 15:45:26,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-21 15:45:26,124 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2019-11-21 15:45:26,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:26,125 INFO L225 Difference]: With dead ends: 75 [2019-11-21 15:45:26,126 INFO L226 Difference]: Without dead ends: 71 [2019-11-21 15:45:26,126 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2019-11-21 15:45:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-21 15:45:26,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-11-21 15:45:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-21 15:45:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2019-11-21 15:45:26,131 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 38 [2019-11-21 15:45:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:26,131 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2019-11-21 15:45:26,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-21 15:45:26,132 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2019-11-21 15:45:26,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-21 15:45:26,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:26,133 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 15:45:26,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:26,337 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 15:45:26,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:26,338 INFO L82 PathProgramCache]: Analyzing trace with hash 905861828, now seen corresponding path program 2 times [2019-11-21 15:45:26,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:26,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [176037367] [2019-11-21 15:45:26,340 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 15:45:26,647 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 15:45:26,647 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 15:45:26,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-21 15:45:26,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:26,669 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 15:45:26,669 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:45:26,676 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:45:26,677 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:45:26,677 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 15:45:26,955 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 15:45:26,955 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:27,876 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 15:45:27,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [176037367] [2019-11-21 15:45:27,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:27,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-21 15:45:27,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188506022] [2019-11-21 15:45:27,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-21 15:45:27,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:27,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-21 15:45:27,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-21 15:45:27,878 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 23 states. [2019-11-21 15:45:29,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:29,258 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2019-11-21 15:45:29,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 15:45:29,259 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2019-11-21 15:45:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:29,260 INFO L225 Difference]: With dead ends: 70 [2019-11-21 15:45:29,260 INFO L226 Difference]: Without dead ends: 70 [2019-11-21 15:45:29,261 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-21 15:45:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-21 15:45:29,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-11-21 15:45:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-21 15:45:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2019-11-21 15:45:29,267 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 46 [2019-11-21 15:45:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:29,267 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2019-11-21 15:45:29,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-21 15:45:29,268 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2019-11-21 15:45:29,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-21 15:45:29,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:29,269 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 15:45:29,478 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:29,480 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-21 15:45:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:29,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1162659866, now seen corresponding path program 1 times [2019-11-21 15:45:29,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:29,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1401779109] [2019-11-21 15:45:29,482 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 15:45:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:29,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-21 15:45:29,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:30,104 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 15:45:30,104 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:31,151 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 15:45:31,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1401779109] [2019-11-21 15:45:31,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 15:45:31,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2019-11-21 15:45:31,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284714050] [2019-11-21 15:45:31,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-21 15:45:31,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:31,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-21 15:45:31,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2019-11-21 15:45:31,153 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 34 states. [2019-11-21 15:45:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:35,879 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2019-11-21 15:45:35,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-21 15:45:35,879 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 51 [2019-11-21 15:45:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:35,880 INFO L225 Difference]: With dead ends: 88 [2019-11-21 15:45:35,881 INFO L226 Difference]: Without dead ends: 84 [2019-11-21 15:45:35,883 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=736, Invalid=1426, Unknown=0, NotChecked=0, Total=2162 [2019-11-21 15:45:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-11-21 15:45:35,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-11-21 15:45:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-11-21 15:45:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2019-11-21 15:45:35,888 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 51 [2019-11-21 15:45:35,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:35,888 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2019-11-21 15:45:35,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-21 15:45:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2019-11-21 15:45:35,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-21 15:45:35,890 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:35,890 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:36,094 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:36,095 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 15:45:36,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:36,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1355931206, now seen corresponding path program 2 times [2019-11-21 15:45:36,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:36,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1344431571] [2019-11-21 15:45:36,098 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 15:45:36,402 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-21 15:45:36,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 15:45:36,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-21 15:45:36,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:36,414 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 15:45:36,415 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:45:36,420 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:45:36,420 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:45:36,420 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 15:45:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 15:45:36,583 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 15:45:36,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1344431571] [2019-11-21 15:45:36,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:36,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-21 15:45:36,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245080862] [2019-11-21 15:45:36,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-21 15:45:36,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:36,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-21 15:45:36,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-21 15:45:36,663 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 13 states. [2019-11-21 15:45:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:37,293 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2019-11-21 15:45:37,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 15:45:37,294 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2019-11-21 15:45:37,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:37,295 INFO L225 Difference]: With dead ends: 82 [2019-11-21 15:45:37,296 INFO L226 Difference]: Without dead ends: 82 [2019-11-21 15:45:37,296 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 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 15:45:37,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-21 15:45:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-11-21 15:45:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-21 15:45:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2019-11-21 15:45:37,301 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 65 [2019-11-21 15:45:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:37,301 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2019-11-21 15:45:37,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-21 15:45:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2019-11-21 15:45:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-21 15:45:37,302 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:37,303 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:37,505 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:37,506 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 15:45:37,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:37,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1355931207, now seen corresponding path program 1 times [2019-11-21 15:45:37,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:37,508 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [720674932] [2019-11-21 15:45:37,508 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 15:45:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:38,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-21 15:45:38,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:38,092 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 15:45:38,092 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 15:45:38,098 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 15:45:38,099 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 15:45:38,099 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 15:45:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 15:45:38,398 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 15:45:39,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [720674932] [2019-11-21 15:45:39,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:39,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-21 15:45:39,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093788060] [2019-11-21 15:45:39,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-21 15:45:39,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:39,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-21 15:45:39,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-21 15:45:39,240 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 23 states. [2019-11-21 15:45:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:40,649 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2019-11-21 15:45:40,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-21 15:45:40,649 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2019-11-21 15:45:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:40,651 INFO L225 Difference]: With dead ends: 80 [2019-11-21 15:45:40,651 INFO L226 Difference]: Without dead ends: 80 [2019-11-21 15:45:40,652 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 104 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 15:45:40,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-21 15:45:40,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2019-11-21 15:45:40,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-21 15:45:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2019-11-21 15:45:40,656 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 65 [2019-11-21 15:45:40,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:40,657 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2019-11-21 15:45:40,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-21 15:45:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2019-11-21 15:45:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-21 15:45:40,659 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:40,659 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:40,863 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:40,864 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 15:45:40,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:40,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1719466207, now seen corresponding path program 1 times [2019-11-21 15:45:40,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:40,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1807625186] [2019-11-21 15:45:40,866 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 15:45:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:41,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 15:45:41,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 15:45:41,199 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 15:45:41,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1807625186] [2019-11-21 15:45:41,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:41,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2019-11-21 15:45:41,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942618948] [2019-11-21 15:45:41,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 15:45:41,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:41,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 15:45:41,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-21 15:45:41,400 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 8 states. [2019-11-21 15:45:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:41,449 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2019-11-21 15:45:41,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 15:45:41,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2019-11-21 15:45:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:41,451 INFO L225 Difference]: With dead ends: 82 [2019-11-21 15:45:41,451 INFO L226 Difference]: Without dead ends: 80 [2019-11-21 15:45:41,451 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 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 15:45:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-21 15:45:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2019-11-21 15:45:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-21 15:45:41,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2019-11-21 15:45:41,455 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 63 [2019-11-21 15:45:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:41,456 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2019-11-21 15:45:41,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 15:45:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2019-11-21 15:45:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-21 15:45:41,457 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:41,457 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:41,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:41,660 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 15:45:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:41,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1756991748, now seen corresponding path program 1 times [2019-11-21 15:45:41,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:41,662 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1430120910] [2019-11-21 15:45:41,662 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 15:45:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 15:45:41,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-21 15:45:41,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 15:45:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 15:45:42,037 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 15:45:42,308 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 15:45:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2019-11-21 15:45:42,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1430120910] [2019-11-21 15:45:42,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 15:45:42,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2019-11-21 15:45:42,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560279231] [2019-11-21 15:45:42,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 15:45:42,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 15:45:42,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 15:45:42,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-21 15:45:42,373 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 11 states. [2019-11-21 15:45:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 15:45:42,483 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2019-11-21 15:45:42,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 15:45:42,483 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2019-11-21 15:45:42,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 15:45:42,485 INFO L225 Difference]: With dead ends: 84 [2019-11-21 15:45:42,485 INFO L226 Difference]: Without dead ends: 80 [2019-11-21 15:45:42,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-21 15:45:42,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-21 15:45:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2019-11-21 15:45:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-21 15:45:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2019-11-21 15:45:42,489 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 68 [2019-11-21 15:45:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 15:45:42,490 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2019-11-21 15:45:42,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 15:45:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2019-11-21 15:45:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-21 15:45:42,491 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 15:45:42,491 INFO L410 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:42,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:45:42,696 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 15:45:42,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 15:45:42,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1270264161, now seen corresponding path program 1 times [2019-11-21 15:45:42,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 15:45:42,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1060759667] [2019-11-21 15:45:42,698 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 15:46:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 15:46:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 15:46:38,156 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 15:46:38,156 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 15:46:38,373 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 15:46:38,395 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2019-11-21 15:46:38,404 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-21 15:46:38,411 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 15:46:38,412 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 15:46:38,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 03:46:38 BoogieIcfgContainer [2019-11-21 15:46:38,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 15:46:38,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 15:46:38,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 15:46:38,424 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 15:46:38,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 03:45:16" (3/4) ... [2019-11-21 15:46:38,428 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-21 15:46:38,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 15:46:38,430 INFO L168 Benchmark]: Toolchain (without parser) took 84380.39 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 357.6 MB). Free memory was 951.0 MB in the beginning and 1.3 GB in the end (delta: -381.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 15:46:38,430 INFO L168 Benchmark]: CDTParser took 0.26 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 15:46:38,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 932.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-21 15:46:38,431 INFO L168 Benchmark]: Boogie Preprocessor took 129.20 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 15:46:38,431 INFO L168 Benchmark]: RCFGBuilder took 1555.33 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 15:46:38,432 INFO L168 Benchmark]: TraceAbstraction took 81752.72 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 194.0 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -323.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 15:46:38,432 INFO L168 Benchmark]: Witness Printer took 4.48 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 15:46:38,435 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 932.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 129.20 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 1555.33 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 81752.72 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 194.0 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -323.8 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 4.48 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 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)=28, ldv_global_msg_list={1661493519:0}] [L527] COND TRUE __VERIFIER_nondet_int() [L528] return malloc(size); VAL [\old(size)=28, \result={-2147483644:0}, ldv_global_msg_list={1661493519:0}, malloc(size)={-2147483644:0}, size=28] [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={-2147483644:24}, ldv_global_msg_list={1661493519:0}] [L683] ((&kref->refcount)->counter) = (1) VAL [kref={-2147483644:24}, kref={-2147483644:24}, 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={-2147483644:8}] [L541] list->next = list VAL [ldv_global_msg_list={1661493519:0}, list={-2147483644:8}, list={-2147483644:8}] [L542] list->prev = list VAL [ldv_global_msg_list={1661493519:0}, list={-2147483644:8}, list={-2147483644:8}] [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: 81.6s, OverallIterations: 16, TraceHistogramMax: 28, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 756 SDtfs, 443 SDslu, 4100 SDs, 0 SdLazy, 2514 SolverSat, 251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1217 GetRequests, 1001 SyntacticMatches, 17 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 9.0s 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: 0.4s SsaConstructionTime, 29.0s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 674 NumberOfCodeBlocks, 626 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1160 ConstructedInterpolants, 62 QuantifiedInterpolants, 196972 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2425 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 30 InterpolantComputations, 24 PerfectInterpolantSequences, 3500/3758 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...